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

  • 66°
  • Clear
  • Wind: SSE 5 mph
  • Humidity: 84%
  • Visibility: 10.0 miles
  • Dew Point: 61°
  • Pressure: 29.99 in. 0

Select a Section

Click a section below for more information.

Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Overcast
Overcast
64°
66°
64°
63°
73°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Chance of a Thunderstorm
  • High: 84 °
  • Low: 64 °
  • Chance of a Thunderstorm
  • Sunday
  • Partly Cloudy
  • High: 73 °
  • Low: 52 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 70 °
  • Low: 48 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 70 °
  • Low: 50 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 77 °
  • Low: 57 °
  • Partly Cloudy

Forecast for Saint Peters, Missouri

Updated: 10:00 PM CDT on September 19, 2014

  • Friday

    Partly cloudy. Fog early. High of 79F. Winds from the SE at 5 to 10 mph.

  • Friday Night

    Clear. Low of 63F. Winds from the South at 5 to 10 mph.

  • Saturday

    Overcast in the morning, then partly cloudy. High of 84F. Winds from the SW at 5 to 10 mph. Chance of rain 20%.

  • Saturday Night

    Overcast with a chance of a thunderstorm and a chance of rain in the evening, then partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 64F. Winds from the WSW at 5 to 10 mph. Chance of rain 50%.

  • Sunday

    Partly cloudy. High of 73F. Winds from the NW at 10 to 15 mph.

  • Sunday Night

    Clear. Low of 52F. Winds from the NNW at 5 to 10 mph.

  • Monday

    Partly cloudy. High of 70F. Winds from the NNE at 5 to 10 mph.

  • Monday Night

    Partly cloudy in the evening, then clear. Low of 48F. Winds from the East at 5 to 10 mph.

  • Tuesday

    Partly cloudy. High of 70F. Winds from the East at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low of 50F. Winds from the ESE at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 77F. Winds from the ESE at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 57F. Winds from the ESE at 5 to 10 mph.

  • Thursday

    Overcast. High of 81F. Winds from the SE at 5 to 10 mph.

  • Thursday Night

    Clear. Low of 55F. Winds from the SE at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 77F. Winds from the SE at 5 to 10 mph.

  • Friday Night

    Clear. Low of 55F. Winds from the SE at 5 to 10 mph.

  • Saturday

    Partly cloudy. High of 77F. Winds less than 5 mph.

  • Saturday Night

    Clear. Fog overnight. Low of 57F. Winds less than 5 mph.

  • Sunday

    Clear. High of 77F. Winds less than 5 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 59F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 77F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Fog overnight. Low of 59F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 77F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 59F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Wilshire Valley, St. Charles, MO

Updated: 8:45 PM CDT

Temperature: 70.2 °F Dew Point: 52 °F Humidity: 52% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 8:54 PM CDT

Temperature: 65.1 °F Dew Point: 62 °F Humidity: 89% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Talbridge, St. Charles, MO

Updated: 8:54 PM CDT

Temperature: 66.7 °F Dew Point: 59 °F Humidity: 76% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Harvester, St. Charles, MO

Updated: 8:49 PM CDT

Temperature: 63.1 °F Dew Point: 59 °F Humidity: 87% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: West Drive, St. Peters, MO

Updated: 8:54 PM CDT

Temperature: 65.0 °F Dew Point: 60 °F Humidity: 82% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 8:51 PM CDT

Temperature: 61.5 °F Dew Point: 59 °F Humidity: 91% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lindenwood, St. Charles, MO

Updated: 8:53 PM CDT

Temperature: 66.9 °F Dew Point: 60 °F Humidity: 79% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 8:54 PM CDT

Temperature: 65.1 °F Dew Point: 58 °F Humidity: 77% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 8:54 PM CDT

Temperature: 69.2 °F Dew Point: 60 °F Humidity: 72% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:53 PM CDT

Temperature: 62.2 °F Dew Point: 60 °F Humidity: 94% Wind: Calm Pressure: 29.51 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 8:54 PM CDT

Temperature: 70.0 °F Dew Point: 61 °F Humidity: 73% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Earth City, Earth City, MO

Updated: 9:48 PM EDT

Temperature: 72.5 °F Dew Point: 59 °F Humidity: 63% Wind: ESE at 5.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 8:54 PM CDT

Temperature: 68.7 °F Dew Point: 60 °F Humidity: 74% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Maryland Heights, MO

Updated: 8:52 PM CDT

Temperature: 65.5 °F Dew Point: 60 °F Humidity: 84% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 8:54 PM CDT

Temperature: 67.2 °F Dew Point: 62 °F Humidity: 82% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 8:54 PM CDT

Temperature: 63.3 °F Dew Point: 59 °F Humidity: 86% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 8:40 PM CDT

Temperature: 69.8 °F Dew Point: 60 °F Humidity: 72% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 8:45 PM CDT

Temperature: 66.6 °F Dew Point: 62 °F Humidity: 86% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Heat Index: - Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 8:54 PM CDT

Temperature: 69.9 °F Dew Point: 60 °F Humidity: 71% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ross Ave, St. Louis, MO

Updated: 8:54 PM CDT

Temperature: 68.7 °F Dew Point: 58 °F Humidity: 69% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 8:54 PM CDT

Temperature: 65.3 °F Dew Point: 61 °F Humidity: 85% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Maryland Heights, St Louis, MO

Updated: 8:52 PM CDT

Temperature: 69.9 °F Dew Point: 60 °F Humidity: 70% Wind: Calm Pressure: 29.33 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:46 PM CDT

Temperature: 68.7 °F Dew Point: 60 °F Humidity: 73% Wind: SSE at 3.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 8:54 PM CDT

Temperature: 67.1 °F Dew Point: 58 °F Humidity: 73% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:54 PM CDT

Temperature: 69.3 °F Dew Point: 63 °F Humidity: 81% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 8:50 PM CDT

Temperature: 64.2 °F Dew Point: 60 °F Humidity: 88% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:45 PM CDT

Temperature: 64.8 °F Dew Point: 60 °F Humidity: 83% Wind: Calm Pressure: 29.92 in Hourly Precipitation: - Heat Index: - Graphs

Location: Riverwood Place, Florissant, MO

Updated: 8:54 PM CDT

Temperature: 65.7 °F Dew Point: 60 °F Humidity: 83% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 8:49 PM CDT

Temperature: 70.6 °F Dew Point: 61 °F Humidity: 71% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

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

Updated: 8:54 PM CDT

Temperature: 66.4 °F Dew Point: 60 °F Humidity: 81% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:54 PM CDT

Temperature: 66.0 °F Dew Point: 59 °F Humidity: 77% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 8:53 PM CDT

Temperature: 64.9 °F Dew Point: 61 °F Humidity: 87% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 8:50 PM CDT

Temperature: 67.1 °F Dew Point: 60 °F Humidity: 78% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: The Boardwalk at WingHaven, OFallon, MO

Updated: 8:42 PM CDT

Temperature: 66.4 °F Dew Point: 61 °F Humidity: 84% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: - 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 
651 PM CDT Fri Sep 19 2014 


Short term: (through late tonight) 
issued at 317 PM CDT Fri Sep 19 2014 


Surface ridge continues to move off to the east allowing southerly 
flow to move back in. So it will be a bit milder tonight with lows 
in the upper 50s to low 60s. With surface ridge still over far 
southern portions of forecast area, plenty of low level moisture and 
winds remaining light, could see some patchy fog over the Eastern 
Ozarks towards daybreak, so added mention. 


Byrd 


Long term: (saturday through next friday) 
issued at 317 PM CDT Fri Sep 19 2014 


In the meantime, next weather system to move in by Saturday 
afternoon with showers and thunderstorms developing and spreading 
southeast across region as cold front moves through. Models have 
some timing differences, so for now only made minor adjustments to 
the grids. Best chances of precipitation will be Saturday afternoon 
and evening before tapering off Sunday morning. Exact location of 
where activity will initiate hard to pin down as well. Could see 
some activity in morning with more stuff firing up by afternoon, as 
for where, it will depend on where the cold front is. 


On Sunday after system exits, begin to cool back down as next ridge 
of high pressure builds in. Cooler and drier weather to persist 
through the middle of next week with highs in the 70s and lows in 
the 50s. Then as ridge slides off, temperatures to moderate by the 
end of the work week. 


Byrd 


&& 


Aviation: (for the 00z tafs through 00z Saturday evening) 
issued at 636 PM CDT Fri Sep 19 2014 


Some fog is expected to develop along the river valleys again 
tonight which will likely bring MVFR or possibly IFR visibilities 
to ksus and kcps. Otherwise VFR conditions are expected until a 
cold front moves south into the area late on Saturday afternoon. 
Scattered showers and thunderstorms may affect KUIN after 21z, 
with possible MVFR or IFR conditions with it. Surface winds will 
veer from southwest to northwest behind it. 


Specifics for kstl: expect dry and VFR conditions through 00z. Currently 
do not expect fog to develop tonight. After 00z on Saturday evening, 
a cold front will move into the area which will bring scattered 
showers and thunderstorms, however the chance of the thunderstorms 
remains too low at this point to add to the taf. 


Britt 


&& 


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.