Saint Peters, Missouri Weather Conditions

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 89°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 53%
  • Visibility: 10.0 miles
  • Dew Point: 70°
  • Pressure: 30.04 in. -
  • Heat Index: 94

Select a Section

Click a section below for more information.

Next 12 Hours

2  pm
5  pm
8  pm
11  pm
2  am
Clear
Clear
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Clear
Clear
89°
90°
81°
76°
74°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Clear
  • High: 92 °
  • Low: 69 °
  • Clear
  • Wednesday
  • Clear
  • High: 93 °
  • Low: 69 °
  • Clear
  • Thursday
  • Clear
  • High: 93 °
  • Low: 69 °
  • Clear
  • Friday
  • Clear
  • High: 94 °
  • Low: 69 °
  • Clear
  • Saturday
  • Clear
  • High: 93 °
  • Low: 69 °
  • Clear

Forecast for Saint Peters, Missouri

Updated: 10:04 AM CDT on January 01, 2015

  • Tuesday

    Lots of sunshine. High 92F. Winds SSW at 5 to 10 mph.

  • Tuesday Night

    Mostly clear. Low 69F. Winds light and variable.

  • Wednesday

    Generally sunny despite a few afternoon clouds. High 93F. Winds SSW at 5 to 10 mph.

  • Wednesday Night

    Mainly clear. Low 69F. Winds light and variable.

  • Thursday

    Sunny, along with a few afternoon clouds. High 93F. Winds light and variable.

  • Thursday Night

    Mainly clear. Low 69F. Winds light and variable.

  • Friday

    Plentiful sunshine. High 94F. Winds light and variable.

  • Friday Night

    Clear skies. Low 69F. Winds light and variable.

  • Saturday

    Sunshine. High 93F. Winds light and variable.

  • Saturday Night

    Clear. Low 69F. Winds light and variable.

  • Sunday

    Generally sunny. High around 95F. Winds light and variable.

  • Sunday Night

    Clear. Low near 70F. Winds light and variable.

  • Monday

    Partly cloudy. High 91F. Winds light and variable.

  • Monday Night

    A few clouds. Low 68F. Winds light and variable.

  • Tuesday

    A mix of clouds and sun with the chance of an isolated thunderstorm in the afternoon. High 84F. Winds NW at 5 to 10 mph. Chance of rain 30%.

  • Tuesday Night

    Mostly clear skies early. Becoming mostly cloudy with showers developing later at night. Low 64F. Winds light and variable. Chance of rain 50%.

  • Wednesday

    A few clouds early, otherwise mostly sunny. High 82F. Winds NE at 5 to 10 mph.

  • Wednesday Night

    Mostly clear skies. Low 64F. Winds light and variable.

  • Thursday

    Intervals of clouds and sunshine. High 83F. Winds SE at 5 to 10 mph.

  • Thursday Night

    Mostly clear skies. Low 63F. Winds light and variable.

  • Friday

    Mostly sunny in the morning then increasing clouds with some scattered thunderstorms later in the day. High 82F. Winds SSW at 5 to 10 mph. Chance of rain 60%.

  • Friday Night

    Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 61F. Winds light and variable. Chance of rain 60%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Saint Peters, Saint Peters, MO

Updated: 1:04 PM CDT

Temperature: 91.2 °F Dew Point: 74 °F Humidity: 57% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Sunny Hill Estates, St. Peters, MO

Updated: 12:59 PM CDT

Temperature: 95.8 °F Dew Point: 68 °F Humidity: 41% Wind: SE at 2.7 mph Pressure: 30.00 in Hourly Precipitation: - Heat Index: 101 °F Graphs

Location: Saint Peters Hills, Saint Peters, MO

Updated: 1:04 PM CDT

Temperature: 89.6 °F Dew Point: 69 °F Humidity: 51% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Hunters Valley, Saint Peters, MO

Updated: 12:48 PM CDT

Temperature: 91.9 °F Dew Point: 72 °F Humidity: 53% Wind: SSW at 2.7 mph Pressure: 30.04 in Hourly Precipitation: - Heat Index: 100 °F Graphs

Location: Spencer Valley, Saint Peters, MO

Updated: 12:50 PM CDT

Temperature: 87.7 °F Dew Point: 73 °F Humidity: 62% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 95 °F Graphs

Location: Park Charles South, Saint Peters, MO

Updated: 12:46 PM CDT

Temperature: 88.7 °F Dew Point: 75 °F Humidity: 68% Wind: North at - Pressure: 30.15 in Hourly Precipitation: - Heat Index: 101 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 1:04 PM CDT

Temperature: 91.6 °F Dew Point: 74 °F Humidity: 57% Wind: SW at 1.8 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 12:58 PM CDT

Temperature: 100.0 °F Dew Point: 75 °F Humidity: 46% Wind: ESE at 2.2 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 114 °F Graphs

Location: manors of orchard glen, St. Peters, MO

Updated: 1:04 PM CDT

Temperature: 89.2 °F Dew Point: 69 °F Humidity: 51% Wind: North at 2.7 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Madison Park, Cottleville, MO

Updated: 1:04 PM CDT

Temperature: 90.5 °F Dew Point: 69 °F Humidity: 50% Wind: South at 2.5 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

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

Updated: 1:04 PM CDT

Temperature: 90.9 °F Dew Point: 76 °F Humidity: 61% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Public Works Department Building, OFallon, MO

Updated: 1:00 PM CDT

Temperature: 92.1 °F Dew Point: 71 °F Humidity: 51% Wind: WSW at 2.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 1:04 PM CDT

Temperature: 89.1 °F Dew Point: 73 °F Humidity: 58% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Windsor Place, Cottleville, MO

Updated: 12:58 PM CDT

Temperature: 97.7 °F Dew Point: 71 °F Humidity: 43% Wind: SW at 1.7 mph Pressure: 29.97 in Hourly Precipitation: - Heat Index: 106 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 1:00 PM CDT

Temperature: 95.9 °F Dew Point: 73 °F Humidity: 48% Wind: South at 2.2 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 106 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 1:04 PM CDT

Temperature: 92.3 °F Dew Point: 74 °F Humidity: 55% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 1:04 PM CDT

Temperature: 90.7 °F Dew Point: 70 °F Humidity: 51% Wind: SW at 1.1 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 1:00 PM CDT

Temperature: 90.3 °F Dew Point: 72 °F Humidity: 55% Wind: SSW at 4.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 1:04 PM CDT

Temperature: 93.0 °F Dew Point: 72 °F Humidity: 50% Wind: SSE at 1.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Ridgetop Estates, OFallon, MO

Updated: 1:00 PM CDT

Temperature: 96.3 °F Dew Point: 73 °F Humidity: 47% Wind: ESE at 3.7 mph Pressure: 30.13 in Hourly Precipitation: - Heat Index: 106 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 1:03 PM CDT

Temperature: 88.4 °F Dew Point: 60 °F Humidity: 38% Wind: South at 2.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 1:04 PM CDT

Temperature: 91.1 °F Dew Point: 72 °F Humidity: 53% Wind: SW at 1.2 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 1:04 PM CDT

Temperature: 90.8 °F Dew Point: 72 °F Humidity: 55% Wind: SE at 3.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Carriage Cove Court, Saint Charles, MO

Updated: 1:03 PM CDT

Temperature: 87.3 °F Dew Point: 79 °F Humidity: 76% Wind: North at - Pressure: 29.99 in Hourly Precipitation: - Heat Index: 102 °F Graphs

Location: Magnolia, OFallon, MO

Updated: 12:57 PM CDT

Temperature: 99.9 °F Dew Point: 76 °F Humidity: 47% Wind: NNE at 1.1 mph Pressure: 29.78 in Hourly Precipitation: - Heat Index: 115 °F Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 1:04 PM CDT

Temperature: 98.6 °F Dew Point: 72 °F Humidity: 42% Wind: SSW at 4.2 mph Pressure: 29.52 in Hourly Precipitation: 0.00 in Heat Index: 108 °F Graphs

Location: O'Fallon Water Treatment Plant, OFallon, MO

Updated: 1:00 PM CDT

Temperature: 89.0 °F Dew Point: 73 °F Humidity: 60% Wind: SE at 2.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Woodcliff, Saint Charles, MO

Updated: 12:51 PM CDT

Temperature: 91.0 °F Dew Point: 81 °F Humidity: 73% Wind: ESE at 3.7 mph Pressure: 29.71 in Hourly Precipitation: - Heat Index: 111 °F Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 1:00 PM CDT

Temperature: 97.0 °F Dew Point: 73 °F Humidity: 47% Wind: East at 2.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 108 °F Graphs

Location: Huntington Downs, Saint Charles, MO

Updated: 1:03 PM CDT

Temperature: 87.1 °F Dew Point: 74 °F Humidity: 65% Wind: North at - Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 95 °F Graphs

Location: Austin Pass Drive, Weldon Spring, MO

Updated: 1:03 PM CDT

Temperature: 91.0 °F Dew Point: 75 °F Humidity: 59% Wind: North at - Pressure: 29.94 in Hourly Precipitation: - Heat Index: 102 °F Graphs

Location: Royal Oaks, O'Fallon, MO

Updated: 1:04 PM CDT

Temperature: 89.1 °F Dew Point: 73 °F Humidity: 60% Wind: South at 2.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Little Oaks Drive, O'Fallon, MO

Updated: 1:03 PM CDT

Temperature: 85.3 °F Dew Point: 76 °F Humidity: 72% Wind: North at - Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 1:04 PM CDT

Temperature: 92.1 °F Dew Point: 73 °F Humidity: 54% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 12:50 PM CDT

Temperature: 91.4 °F Dew Point: 74 °F Humidity: 56% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Winghaven, OFallon, MO

Updated: 12:52 PM CDT

Temperature: 92.3 °F Dew Point: 74 °F Humidity: 55% Wind: ESE at 2.2 mph Pressure: 30.02 in Hourly Precipitation: - Heat Index: 102 °F Graphs

Location: Conch Terrace, O'Fallon, MO

Updated: 1:03 PM CDT

Temperature: 89.8 °F Dew Point: 76 °F Humidity: 63% Wind: North at - Pressure: 30.17 in Hourly Precipitation: - Heat Index: 101 °F Graphs

Location: Dardenne Prairie, Dardenne Prairie, MO

Updated: 1:00 PM CDT

Temperature: 93.4 °F Dew Point: 74 °F Humidity: 54% Wind: SE at 1.1 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 104 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 1:04 PM CDT

Temperature: 86.8 °F Dew Point: 72 °F Humidity: 62% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 93 °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 
issued by National Weather Service Kansas City/Pleasant Hill MO 
1231 PM CDT Tuesday Sep 1 2015 


Short term: (through late this afternoon) 
issued at 330 am CDT Tuesday Sep 1 2015 


Primary concern for today is thunderstorm chances throughout the 
day. Short range guidance continues to want to break out isolated 
to widely scattered convection this morning along a line from near 
West Plains Missouri to Salem Illinois. This is in the vicinity of 
a middle-upper level vorticity chain stretching up from East Texas 
through Arkansas and southeast Missouri into Indiana. Rap shows 
some weak low level warm advection and moisture convergence under 
the vorticity chain through middle morning and latest infrared Sat-pics show what 
looks like Alto-cumulus breaking out in the vicinity of the 
aforementioned line. Indeed...surface observation show developing ceilings 
between 8000-10,000 feet and an isolated cell has recently popped up 
on radar in central Illinois. Should see this activity continue to 
percolate through middle morning before waning. Think there will be 
some redevelopment this afternoon in the vicinity of that vorticity chain 
where the middle level capping and upper level subsidence will be 
weakest. Coverage will likely be widely scattered at best. With 
relatively stagnant pattern in place, expect highs to be similar to 
yesterday's...perhaps a degree or two warmer. 


Carney 


Long term: (tonight through monday) 
issued at 355 am CDT Tuesday Sep 1 2015 


Expect any thunderstorms that develop this afternoon to quickly 
dissipate early this evening as we lose daytime heating. While the 
shear axis/vorticity chain in the middle and upper levels will still be 
in the vicinity of the area tonight and Wednesday, it looks like it 
will be weakening with time as well as dipping further south across 
far southeast Missouri, northeast Arkansas, Tennessee, and Kentucky. 
I can't totally rule out an isolated shower or thunderstorm 
tonight into wednesay, but think precipitation chances are low enough in 
our County warning forecast area to keep probability of precipitation below mentionable levels at this time. 


The rest of the forecast at least through the weekend looks pretty 
uneventful. Late Summer-like pattern with strong ridging through 
the depth of the troposphere should keep the area hot and dry 
through the weekend. Highs look to be in the low to middle 90s with 
lows generally in the low to middle 70s. Dewpoint temperatures should 
stay in the upper 60s to low 70s across the area though the period. 
While this will feel warm and humid, current thinking is that heat 
headlines will not be needed. A pattern shift with some cooler 
temperatures may be in the forecast next week, but GFS and European model (ecmwf) 
aren't exactly in good agreement on this. Regardless...the shift 
(if it occurs) will likely be toward the middle of the week; so have 
kept warm temperatures going through Monday. 


Carney 


&& 


Aviation: (for the 18z tafs through 18z Wednesday afternoon) 
issued at 1226 PM CDT Tuesday Sep 1 2015 


VFR conditions are expected to persist through the forecast period 
across the majority of the region. Scattered cumulus with bases 
around 5 kft will continue to develop throughout the southern half 
of the forecast area...and could even see a few pop up showers or 
isolated thunderstorms this afternoon mainly south of the terminals. 
Cloud cover and any potential for precipitation will dissipate around 
01z-02z...leaving behind clear skies and light southerly winds. 


Specifics for kstl: VFR conditions expected. A few isolated showers 
or thunderstorms could develop south of kstl and will monitor closely 
in case these encroach on the vicinity of the terminal...but for now 
the probability is too low for mention in the taf. Winds will vary 
between 210 and 230 degrees at speeds around 7 to 8 kts through early 
evening...then will back to the south and decrease to speeds around 5 
kts. 


Laflin 


&& 


Preliminary point temperatures/pops: 
Saint Louis 93 78 92 78 / 10 10 5 5 
Quincy 93 69 91 70 / 5 5 5 5 
Columbia 93 69 92 70 / 10 10 5 5 
Jefferson City 93 69 92 70 / 10 10 5 5 
Salem 90 70 90 70 / 20 10 10 5 
Farmington 90 68 91 69 / 20 20 5 5 


&& 


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


$$ 


Weather forecast office lsx 






National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.