Saint Peters, Missouri Weather Conditions

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Current Conditions

  • 86°
  • Scattered Clouds
  • Wind: ESE 9 mph
  • Humidity: 46%
  • Visibility: 10.0 miles
  • Dew Point: 63°
  • Pressure: 29.79 in. +
  • Heat Index: 87

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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
Chance of a Thunderstorm
Chance of T-storms
Thunderstorm
T-storms
81°
72°
68°
68°
68°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Thunderstorm
  • High: 86 °
  • Low: 64 °
  • Thunderstorm
  • Thursday
  • Thunderstorm
  • High: 81 °
  • Low: 52 °
  • T-Storms
  • Friday
  • Partly Cloudy
  • High: 63 °
  • Low: 37 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 59 °
  • Low: 41 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 72 °
  • Low: 46 °
  • Partly Cloudy

Forecast for Saint Peters, Missouri

Updated: 4:00 PM CDT on October 01, 2014

  • Wednesday

    Partly cloudy with thunderstorms and rain showers in the afternoon. High of 84F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Mostly cloudy with thunderstorms. Low of 64F. Winds from the SSE at 5 to 10 mph. Chance of rain 60%.

  • Thursday

    Overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 81F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Thursday Night

    Overcast with thunderstorms and rain showers, then a chance of rain after midnight. Low of 52F. Winds from the SW at 5 to 10 mph. Chance of rain 90% with rainfall amounts near 1.0 in. possible.

  • Friday

    Partly cloudy. Fog early. High of 63F. Windy. Winds from the WNW at 15 to 25 mph with gusts to 35 mph.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 37F. Winds from the West at 10 to 15 mph.

  • Saturday

    Partly cloudy in the morning, then clear. High of 59F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Saturday Night

    Partly cloudy. Low of 41F. Winds from the WSW at 5 to 10 mph.

  • Sunday

    Partly cloudy. High of 72F. Winds from the SSW at 10 to 15 mph shifting to the West in the afternoon.

  • Sunday Night

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

  • Monday

    Mostly cloudy with a chance of rain. High of 70F. Winds from the WSW at 5 to 20 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 45F. Winds from the SSW at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Tuesday

    Partly cloudy. High of 82F. Winds from the WSW at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 52F. Winds from the SW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm. Fog early. High of 81F. Winds from the WSW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 59F. Winds less than 5 mph. Chance of rain 50%.

  • Thursday

    Overcast with a chance of a thunderstorm. Fog early. High of 91F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Thursday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 55F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Friday

    Mostly cloudy with a chance of a thunderstorm. Fog early. High of 68F. Winds less than 5 mph. Chance of rain 50%.

  • Friday Night

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

  • Saturday

    Mostly cloudy. Fog early. High of 61F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Fog overnight. Low of 45F. Winds less than 5 mph.

  • Sunday

    Clear. High of 61F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 45F. Winds from the WNW at 5 to 10 mph.

Severe Weather Alert Descriptions

 Public Information Statement  Statement as of 3:00 PM CDT on October 1, 2014


... Safety rules for flash floods...

A Flash Flood 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 messages frequently while the watch is in effect.

As a reminder, a Flash Flood Watch means conditions in and close
to the watch area are favorable for the rapid development of
flooding. People who live in flood prone areas should carefully
monitor weather conditions and be prepared to take immediate
action should flooding begin to develop.

A Flash Flood Warning means flooding is occurring or imminent.
People in the warned area should take immediate action to save
lives and protect property.

Flash flooding causes more deaths annually than any other
weather related disaster. Most flash flood deaths occur in
automobiles. Never attempt to drive across flooded roadways.
Two feet of water can move most vehicles. If your vehicle is
caught in rapidly rising water, abandon it quickly and move
to higher ground.

Small streams, creeks, and rivers are potential killers
during heavy rains. Heavy rainfall can lead to rapid rises
pushing waterways out of their banks. Campers should avoid
camping along streams or creeks during threatening rains.
Also remember that the heavy rain may occur well upstream from
your immediate area. Never attempt to cross a flowing
stream, even a small one, on foot. If you are near a stream
and observe rapidly rising water, move to higher ground
immediately.

Be especially cautious at night when it is harder to recognize
the dangers of flash floods. If flash flooding or rapidly
rising water is observed, move to higher ground immediately.
If you live in flood prone areas, be especially alert during
heavy rain. Flooding can often occur with little or no
warning.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Wilshire Valley, St. Charles, MO

Updated: 3:15 PM CDT

Temperature: 85.8 °F Dew Point: 52 °F Humidity: 32% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 3:15 PM CDT

Temperature: 87.4 °F Dew Point: 67 °F Humidity: 50% Wind: SE at 1.1 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 3:05 PM CDT

Temperature: 87.1 °F Dew Point: 68 °F Humidity: 53% Wind: SE at 4.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 3:15 PM CDT

Temperature: 84.4 °F Dew Point: 67 °F Humidity: 54% Wind: NE at 1.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 3:11 PM CDT

Temperature: 88.6 °F Dew Point: 68 °F Humidity: 50% Wind: SE at 7.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 3:15 PM CDT

Temperature: 87.6 °F Dew Point: 68 °F Humidity: 53% Wind: SE at 4.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 3:15 PM CDT

Temperature: 82.9 °F Dew Point: 68 °F Humidity: 60% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 3:15 PM CDT

Temperature: 86.1 °F Dew Point: 65 °F Humidity: 49% Wind: East at 4.7 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 3:15 PM CDT

Temperature: 87.0 °F Dew Point: 66 °F Humidity: 49% Wind: East at 4.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Creve Coeur Park - Forest ReLeaf, St. Louis, MO

Updated: 3:10 PM CDT

Temperature: 90.3 °F Dew Point: 68 °F Humidity: 48% Wind: Calm Pressure: 29.28 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 3:15 PM CDT

Temperature: 89.2 °F Dew Point: 64 °F Humidity: 43% Wind: SSE at 4.3 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: APRSWXNET St. Louis MO US, Saint Louis, MO

Updated: 11:34 AM CDT

Temperature: 79 °F Dew Point: 66 °F Humidity: 64% Wind: SSE at 3 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 3:15 PM CDT

Temperature: 88.7 °F Dew Point: 65 °F Humidity: 46% Wind: SSE at 6.9 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 3:14 PM CDT

Temperature: 87.9 °F Dew Point: 69 °F Humidity: 53% Wind: ESE at 4.0 mph Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 3:09 PM CDT

Temperature: 85.7 °F Dew Point: 66 °F Humidity: 52% Wind: SE at 2.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 3:15 PM CDT

Temperature: 88.0 °F Dew Point: 66 °F Humidity: 48% Wind: ESE at 3.0 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 3:15 PM CDT

Temperature: 87.1 °F Dew Point: 64 °F Humidity: 47% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 3:15 PM CDT

Temperature: 86.0 °F Dew Point: 65 °F Humidity: 50% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 3:10 PM CDT

Temperature: 87.0 °F Dew Point: 66 °F Humidity: 50% Wind: ESE at 8.0 mph Pressure: 29.12 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

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

Updated: 3:12 PM CDT

Temperature: 85.4 °F Dew Point: 66 °F Humidity: 53% Wind: ESE at 5.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 3:15 PM CDT

Temperature: 84.6 °F Dew Point: 66 °F Humidity: 53% Wind: ESE at 2.2 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 3:15 PM CDT

Temperature: 91.1 °F Dew Point: 68 °F Humidity: 47% Wind: WSW at 4.0 mph Pressure: 29.71 in Hourly Precipitation: 0.00 in Heat Index: 95 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 3:15 PM CDT

Temperature: 89.7 °F Dew Point: 64 °F Humidity: 42% Wind: SE at 8.0 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

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

Updated: 3:06 PM CDT

Temperature: 89.6 °F Dew Point: 66 °F Humidity: 46% Wind: SSW at 3.7 mph Pressure: 29.71 in Hourly Precipitation: - Heat Index: 92 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 3:14 PM CDT

Temperature: 83.8 °F Dew Point: 67 °F Humidity: 57% Wind: SSE at 2.0 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 3:15 PM CDT

Temperature: 87.5 °F Dew Point: 65 °F Humidity: 48% Wind: ESE at 7.0 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

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

Updated: 3:15 PM CDT

Temperature: 86.3 °F Dew Point: 69 °F Humidity: 57% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

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

Updated: 3:15 PM CDT

Temperature: 89.0 °F Dew Point: 64 °F Humidity: 43% Wind: SW at 6.0 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 3:14 PM CDT

Temperature: 88.2 °F Dew Point: 66 °F Humidity: 48% Wind: South at 2.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 3:15 PM CDT

Temperature: 86.6 °F Dew Point: 69 °F Humidity: 56% Wind: SE at 1.0 mph Pressure: 29.66 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: The Boardwalk at WingHaven, OFallon, MO

Updated: 3:12 PM CDT

Temperature: 86.5 °F Dew Point: 66 °F Humidity: 50% Wind: SSE at 4.0 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated aviation 
National Weather Service St Louis MO 
124 PM CDT Wed Oct 1 2014 


Update: 
issued at 1103 am CDT Wed Oct 1 2014 


Area of showers and thunderstorms has moved into northeast 
Missouri, and will eventually cross the river into west central 
Illinois. This area is being driven by an modest level moisture 
convergence that will persist into the afternoon hours. Have upped 
pops to accordingly to cover going trends this morning, and have 
likely pops going over central and northeast Missouri and west 
central Illinois this afternoon. Lowered highs a bit over the far 
northwestern part of the County Warning Area today where persistent rain is most 
likely to hold down temperatures. 


Still looks like greatest chance of any severe weather will be 
later today into this evening when instability will be the 
greatest. Most likely it will be near the outflow boundary from the 
current convection as deep layer shear increases over the area. 


Britt 


&& 


Short term: (through late this afternoon) 
issued at 226 am CDT Wed Oct 1 2014 


As expected the convection stayed west of the County Warning Area overnight with 
parts of northeast Kansas, eastern Nebraska, western Iowa, and 
northern Missouri picking up some hefty precipitation totals from 
training convection. Model guidance depicts a slow eastward movement 
to the convection this morning, with additional storms likely firing 
during the afternoon across northwest or central Missouri. The 
front that settled to our south yesterday evening will lift north as 
a warm front today, allowing temperatures to rise well above average 
again. 


Cvking 


Long term: (tonight through tuesday) 
issued at 226 am CDT Wed Oct 1 2014 


Thunderstorms should increase in coverage and intensity tonight 
as next upper level disturbance rounding the base of the large 
scale trof at the moment lifts northeast across the Southern 
Plains into the Midwest. Combine this synoptic lift with a 
strengthening low level jet and the result should be some hefty 
convection across northern Missouri into west central Illinois. 
Training convection could lead to some rainfall totals in excess 
of 2 inches and the threat of flash flooding will need to be 
monitored. Will not issue a watch due to dry antecedent 
conditions. Slight risk of severe thunderstorms from Storm Prediction Center reaches 
into central and northeast Missouri. Could certainly be some 
reports of large hail and damaging winds with the strongest cells. 


Complex of thunderstorms will be weakening and exiting into weather forecast office ilx 
area Thursday morning with attention turning to the cold front 
moving into Missouri from the west. Thunderstorms again expected to 
develop, maybe in waves on Thursday, along and ahead of the 
front. These storms will be capable of producing the full gamut 
of severe weather, especially given the favorable shear profile. 
The exact timing, location, and severity of convection will be 
modulated by mesoscale features such as outflow boundaries. 


Expect most of the convection to be exiting the area by 06z Friday 
with only a few showers lingering after midnight as the cold front 
sweeps across the County Warning Area. 


Friday looks windy and much colder as upper level low moving 
southeast across the upper Midwest deepens the long wave trof as it 
slides east of the County Warning Area. Colder than normal conditions expected on 
Saturday with temperatures only rising into the 50s. 


Temperatures to slowly warm the remainder of the extended but there 
is some indications that this long wave trof will stay parked to our 
east, keeping northwest flow alive and well overhead. A disturbance 
moving southeast within that flow could bring few sprinkles or rain 
showers to the County Warning Area on Sunday/Sunday night. 


Cvking 


&& 


Aviation: (for the 18z tafs through 18z Thursday afternoon) 
issued at 123 PM CDT Wed Oct 1 2014 


Expect occasional showers and thunderstorms with MVFR and possible 
IFR conditions at all of the terminals during this period. Showers 
and thunderstorms will be mostly likely at KUIN and kcou this 
afternoon and will become widespread across the area overnight 
tonight into early Thursday. Additional thunderstorms will be 
possible on Thursday afternoon ahead of a cold front that will 
move across the area. A few severe thunderstorms are possible with 
hail and strong wind gusts. 


Specifics for kstl: expect thunderstorms to move into the area as 
early as this evening. Expect the greatest chance to be overnight 
with MVFR conditions. Then expect a lull in the rain during the 
morning and early afternoon before additional thunderstorm move 
into the area ahead of a cold front late on Thursday afternoon. 


Britt 


&& 


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


$$ 


Weather forecast office lsx 



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