Saint Peters, Missouri Weather Conditions

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Current Conditions

  • 78°
  • Mostly Cloudy
  • Wind: SSE 10 mph
  • Humidity: 31%
  • Visibility: 10.0 miles
  • Dew Point: 45°
  • Pressure: 29.67 in. -

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Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Thunderstorm
T-storms
Thunderstorm
T-storms
Chance of a Thunderstorm
Chance of T-storms
Clear
Clear
Clear
Clear
73°
66°
61°
52°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Thunderstorm
  • High: 78 °
  • Low: 46 °
  • T-Storms
  • Friday
  • Clear
  • High: 81 °
  • Low: 50 °
  • Clear
  • Saturday
  • Chance of a Thunderstorm
  • High: 81 °
  • Low: 55 °
  • Chance of a Thunderstorm
  • Sunday
  • Chance of a Thunderstorm
  • High: 81 °
  • Low: 55 °
  • Chance of T-Storms
  • Monday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 52 °
  • Chance of T-Storms

Forecast for Saint Peters, Missouri

Updated: 10:00 AM CDT on April 24, 2014

  • Thursday

    Overcast with thunderstorms, then thunderstorms and rain showers in the afternoon. High of 73F. Breezy. Winds from the SSE at 15 to 20 mph. Chance of rain 80% with rainfall amounts near 0.3 in. possible.

  • Thursday Night

    Mostly cloudy with thunderstorms in the evening, then clear. Low of 46F. Breezy. Winds from the SW at 10 to 20 mph shifting to the WNW after midnight. Chance of rain 80% with rainfall amounts near 0.5 in. possible.

  • Friday

    Clear. High of 81F. Winds from the West at 5 to 10 mph.

  • Friday Night

    Clear in the evening, then partly cloudy. Low of 50F. Winds from the SSW at 5 to 10 mph.

  • Saturday

    Partly cloudy. High of 81F. Winds from the South at 10 to 15 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 55F. Winds from the SSE at 5 to 20 mph.

  • Sunday

    Mostly cloudy in the morning, then overcast with a chance of a thunderstorm and rain. Fog early. High of 81F. Winds from the SSE at 10 to 15 mph. Chance of rain 40%.

  • Sunday Night

    Overcast with a chance of a thunderstorm and rain in the evening, then partly cloudy with thunderstorms. Low of 55F. Breezy. Winds from the SSE at 10 to 20 mph. Chance of rain 80% with rainfall amounts near 0.9 in. possible.

  • Monday

    Partly cloudy with a chance of a thunderstorm and rain in the afternoon. Fog early. High of 82F. Breezy. Winds from the South at 15 to 20 mph. Chance of rain 40%.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 52F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Tuesday

    Partly cloudy. High of 81F. Winds from the SW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy with a chance of rain. Low of 43F. Winds from the WNW at 5 to 15 mph. Chance of rain 40%.

  • Wednesday

    Mostly cloudy with a chance of rain. High of 63F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy. Low of 46F. Winds from the WNW at 10 to 15 mph.

  • Thursday

    Overcast with a chance of rain. High of 66F. Winds from the WNW at 10 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy. Low of 46F. Winds from the WNW at 5 to 15 mph.

  • Friday

    Mostly cloudy. High of 64F. Winds from the WNW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 46F. Winds from the WNW at 5 to 10 mph.

  • Saturday

    Clear. High of 70F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 48F. Winds less than 5 mph.

  • Sunday

    Clear. High of 75F. Winds less than 5 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 48F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Public Information Statement  Statement as of 2:23 PM CDT on April 24, 2014


... Safety rules for severe thunderstorms...

A Severe Thunderstorm Watch has been issued by the National
Weather Service. In the interest of public safety, the
following safety rules are provided. Public and commercial
broadcast stations serving the affected area are asked to
broadcast these safety measures frequently while the watch is
in effect.

A Severe Thunderstorm Watch means conditions are favorable for
the development of severe thunderstorms in and close to the
watch area. If you are in the watch area, keep up to date of
the latest weather information. These storms can develop
rapidly so there may be occasions when advance warning is not
possible.

A Severe Thunderstorm Warning means a severe thunderstorm has
been observed or indicated on radar. If you are in the path
or near the storm, take immediate actions to protect life and
property. Follow these safety rules:

(1) in open country, you should seek shelter and avoid trees
which can be targets for lightning. If there is no shelter,
go to a ditch or culvert but beware of rising water which can
cause flooding.

(2) when indoors, stay away from outside walls and windows
and go to an interior room on the lowest level. Avoid using
electrical appliances while the storm is nearby.

(3) in Mobile homes, you should leave and seek nearby safe
shelter.

(4) if swimming or on a boat, you should get to shore as
quickly as possible and find shelter.

A thunderstorm is considered severe when it contains one inch
or larger diameter size hail and/or wind gusts of 58 miles an
hour or greater. A severe thunderstorm can also produce deadly
lightning and very heavy rain which can lead to flash flooding.

Remember, with any severe thunderstorm there is always the
possibility of tornadoes.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Danielle Downs, St. Peters, MO

Updated: 2:37 PM CDT

Temperature: 81.0 °F Dew Point: 49 °F Humidity: 36% Wind: SSW at 4.5 mph Pressure: 29.56 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 2:23 PM CDT

Temperature: 80.0 °F Dew Point: 52 °F Humidity: 38% Wind: SSE at 8.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Tanglewood, Saint Peters, MO

Updated: 2:37 PM CDT

Temperature: 79.2 °F Dew Point: 51 °F Humidity: 38% Wind: ESE at 3.6 mph Pressure: 29.42 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 2:37 PM CDT

Temperature: 77.6 °F Dew Point: 51 °F Humidity: 37% Wind: SW at 1.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 2:36 PM CDT

Temperature: 79.2 °F Dew Point: 50 °F Humidity: 36% Wind: SSW at 13.0 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Saint Peters, MO

Updated: 2:37 PM CDT

Temperature: 77.5 °F Dew Point: 51 °F Humidity: 40% Wind: WNW at 1.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 2:35 PM CDT

Temperature: 80.0 °F Dew Point: 51 °F Humidity: 37% Wind: ESE at 6.0 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 2:37 PM CDT

Temperature: 78.5 °F Dew Point: 48 °F Humidity: 34% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 2:37 PM CDT

Temperature: 78.6 °F Dew Point: 48 °F Humidity: 34% Wind: SE at 2.3 mph Pressure: 29.66 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 2:37 PM CDT

Temperature: 80.6 °F Dew Point: 49 °F Humidity: 33% Wind: SSE at 1.8 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 2:35 PM CDT

Temperature: 77.4 °F Dew Point: 50 °F Humidity: 39% Wind: South at 5.0 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Maryland Heights, MO

Updated: 2:37 PM CDT

Temperature: 79.2 °F Dew Point: 50 °F Humidity: 36% Wind: SE at 4.0 mph Pressure: 29.58 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 2:36 PM CDT

Temperature: 78.7 °F Dew Point: 52 °F Humidity: 40% Wind: South at 7.0 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Fox Hill, Saint Charles, MO

Updated: 2:37 PM CDT

Temperature: 79.0 °F Dew Point: 22 °F Humidity: 12% Wind: Calm Pressure: 29.09 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 2:37 PM CDT

Temperature: 81.5 °F Dew Point: 48 °F Humidity: 31% Wind: South at 3.4 mph Pressure: 29.27 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Stable Ridge Estates, Saint Charles, MO

Updated: 2:35 PM CDT

Temperature: 81.1 °F Dew Point: 55 °F Humidity: 41% Wind: NE at 2.2 mph Pressure: 29.36 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 2:24 PM CDT

Temperature: 79.3 °F Dew Point: 52 °F Humidity: 39% Wind: ESE at 9.4 mph Pressure: 29.55 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 2:37 PM CDT

Temperature: 78.2 °F Dew Point: 48 °F Humidity: 34% Wind: ESE at 7.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 2:36 PM CDT

Temperature: 78.8 °F Dew Point: 49 °F Humidity: 35% Wind: East at 10.0 mph Pressure: 29.00 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: De Smet Jesuit High School, Creve Coeur, MO

Updated: 2:30 PM CDT

Temperature: 77.1 °F Dew Point: 49 °F Humidity: 37% Wind: SSW at 9.0 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 2:37 PM CDT

Temperature: 78.7 °F Dew Point: 48 °F Humidity: 35% Wind: SE at 1.1 mph Pressure: 29.00 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: O'fallon / St. Peters, St. Peters, MO

Updated: 2:37 PM CDT

Temperature: 79.7 °F Dew Point: 50 °F Humidity: 35% Wind: NW at 1.9 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 2:35 PM CDT

Temperature: 79.3 °F Dew Point: 37 °F Humidity: 22% Wind: SSE at 13.0 mph Pressure: 29.52 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: St. Ann, MO, St. Ann, MO

Updated: 2:35 PM CDT

Temperature: 80.4 °F Dew Point: 50 °F Humidity: 35% Wind: SSW at 4.7 mph Pressure: 29.58 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 2:37 PM CDT

Temperature: 77.9 °F Dew Point: 50 °F Humidity: 37% Wind: South at 4.0 mph Pressure: 29.60 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 2:37 PM CDT

Temperature: 79.0 °F Dew Point: 51 °F Humidity: 38% Wind: ESE at 4.0 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 2:34 PM CDT

Temperature: 78.3 °F Dew Point: 48 °F Humidity: 35% Wind: SE at 9.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: 1 Mile South of St. Louis Lambert Airport, Woodson Terrace, MO

Updated: 2:37 PM CDT

Temperature: 78.2 °F Dew Point: 54 °F Humidity: 43% Wind: ESE at 3.0 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Downtown O'Fallon, O'Fallon, MO

Updated: 2:37 PM CDT

Temperature: 77.0 °F Dew Point: 46 °F Humidity: 34% Wind: ESE at 10.0 mph Pressure: 29.60 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 2:37 PM CDT

Temperature: 78.5 °F Dew Point: 50 °F Humidity: 37% Wind: SSE at 4.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 2:35 PM CDT

Temperature: 77.6 °F Dew Point: 51 °F Humidity: 39% Wind: ESE at 9.0 mph Pressure: 29.54 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: The Boardwalk at WingHaven, OFallon, MO

Updated: 2:31 PM CDT

Temperature: 77.7 °F Dew Point: 50 °F Humidity: 37% Wind: SSW at 8.9 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Winding Trails, Ballwin, MO

Updated: 2:34 PM CDT

Temperature: 77.6 °F Dew Point: 51 °F Humidity: 40% Wind: South at 1.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Dardenne Prairie, Dardenne Prairie, MO

Updated: 2:33 PM CDT

Temperature: 79.9 °F Dew Point: 53 °F Humidity: 39% Wind: SSW at 4.3 mph Pressure: 29.37 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service St Louis MO 
235 PM CDT Thu Apr 24 2014 


Short term: (through late tonight) 
issued at 234 PM CDT Thu Apr 24 2014 


(tonight) 


Main focus through tonight will be cold front and associated risk for 
showers and thunderstorms. Degree of instability is still a concern and 
a source of uncertainty. Dewpoints have really struggled to climb so 
far today due to persistent southeasterly surface flow. Winds are expected 
to veer to the south/southwest as a subtle warm front lifts north to near 
the I-70 corridor by 0000 UTC this evening. This should allow sfc dewpoints 
to at least climb into the 50s across the southern half of the area. That 
being said...instability is likely to be on the marginal side for severe 
thunderstorms...on the order of several hundred j/kg. Wind shear will be 
supportive however of organized convection over the southern County Warning Area with 
40+ knots of 0-6 km shear just downstream of approaching shortwave trough. 
Regardless of the severity of storms tonight...believe widespread showers 
and thunderstorms will affect the entire County Warning Area due to very strong forcing for 
ascent aloft via dcpva ahead of vort Max and jet coupling. This strong 
upper-level support may help overcome the lack of instability and may 
lead to more strong/severe storms with damaging straight-line winds being 
the primary threat. Frontal timing and associated ending to precipitation 
is even more delayed than this time yesterday...with frontal timing just 
after 0000 UTC likely along the Mississippi River including the St. Louis 
metropolitan area and around 0400 UTC for kslo/k3lf. 


Skies will quickly clear overnight tonight with northwesterly winds gradually 
lightening up a bit. Look for lows in the 40s to near 50 degrees across the 
area and went with a consensus of guidance for mins tonight. 




Gosselin 


Long term: (saturday through wednesday) 
issued at 403 am CDT Thu Apr 24 2014 


Guidance continues to come into better agreement for the weekend. 
The secondary front which was forecast to sweep all the way 
through Missouri into Arkansas earlier in the week is now only 
going to get to southern Iowa according to the model collective. 
Still showing a good low level baroclinic zone stretching from 
southwest Missouri up into Iowa Saturday through Sunday with a 
southwest low level jet ramping up to 40-50kts flowing 
perpendicular to the thermal gradient. All models print out some 
light precip in response to this on Saturday, primarily over 
central and western Missouri but I wouldn't be surprised to see it 
a bit further north/northeast as well if this verifies. 
Temperatures will be highly dependent on how much sunshine we end 
up getting, but I leaned heavily on the warmer mav numbers. 


Strong warm advection continues ahead of the ginormous trof which 
will be moving over The Rockies Saturday night, and it looks like 
there could be some nocturnal convection as a a result...mostly 
across northern sections of the County warning forecast area. The trof moves into the Great 
Plains on Sunday and closes off while also becoming negatively 
tilted. The resulting wound up, slow moving storm system will draw 
abundant moisture into the mid-Mississippi Valley from the Gulf 
producing at least a couple of rounds of showers and thunderstorms 
Sunday into Monday night before the associated cold front comes 
through and drier air works into the area. Temperatures should stay 
seasonably mild through the Monday with highs near normal. 


Tuesday and Wednesday the storm system moves slowly overhead and 
then on into the Ohio Valley. Models print out widespread precip 
over the area as cold air aloft moves in with the cut off low. 
Heaviest amounts look to be across northern Missouri and southern 
Iowa associated with the deformation zone. While this makes sense 
conceptually, still not sure I totally believe the medium range 
models as this is a highly anomalous pattern for late April/early. 
Stuck relatively close to guidance though as the mass fields on the 
GFS and European model (ecmwf) are in very good agreement considering strength of 
this system and its anomalous nature. 


Carney 


&& 


Aviation: (for the 18z tafs through 18z Friday afternoon) 
issued at 1216 PM CDT Thu Apr 24 2014 


Round of pre-frontal precpitation beginning to affect kcou and 
should also affect KUIN with shra/embedded thunder possible. 
Ceilings/visibilities may dip down into MVFR category early this 
afternoon. Frontal timing a bit slower than earlier 
forecast...around 2100 UTC at kcou...2300 UTC at KUIN...and 
0000-0200 UTC at Metro taf sites. More instability as you head 
south...but round of thunderstorms expected at terminals with 
brief periods of IFR visbys in heavy rain possible. Showers are 
expected to linger behind front for a few hours. Winds will shift 
to the northwest behind front with brief gusts along/just behind 
front from 25-30 knots. Skies will quickly clear out overnight 
tonight with winds backing to the west/southwest Friday. 


Specifics for kstl: 


Round of pre-frontal is expected to weaken as it heads east toward 
terminal so uncertain whether or not some light rain showers will 
affect the site. Frontal timing a bit slower than earlier 
forecast...around 0100 UTC. More instability as you head 
south...but round of thunderstorms expected at terminal with 
brief periods of IFR visbys in heavy rain possible. Showers are 
expected to linger behind front for a few hours. Winds will shift 
to the northwest behind front with brief gusts along/just behind 
front from 25-30 knots. Skies will quickly clear out overnight 
tonight with winds backing to the west/southwest Friday afternoon. 




Gosselin 


&& 


Preliminary point temperatures/pops: 
Saint Louis 51 78 56 83 / 100 0 5 10 
Quincy 46 76 52 78 / 100 0 10 10 
Columbia 45 78 53 81 / 80 0 10 30 
Jefferson City 47 79 53 82 / 90 0 10 30 
Salem 50 76 52 80 / 80 0 5 5 
Farmington 49 77 53 81 / 90 0 5 10 


&& 


Lsx watches/warnings/advisories: 
MO...none. 
Illinois...none. 
&& 


$$ 


Weather forecast office lsx 



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