Saint Peters, Missouri Weather Conditions

Severe Weather Alerts

National Weather Service:

Flood Warning View All Alerts

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

  • 82°
  • Scattered Clouds
  • Wind: East 6 mph
  • Humidity: 58%
  • Visibility: 10.0 miles
  • Dew Point: 66°
  • Pressure: 30.04 in. 0
  • Heat Index: 84

Select a Section

Click a section below for more information.

Next 12 Hours

11  am
2  pm
5  pm
8  pm
11  pm
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
80°
87°
88°
82°
75°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 90 °
  • Low: 69 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 94 °
  • Low: 71 °
  • Clear
  • Monday
  • Clear
  • High: 92 °
  • Low: 70 °
  • Clear
  • Tuesday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 69 °
  • Chance of T-Storms
  • Wednesday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 66 °
  • Chance of T-Storms

Forecast for Saint Peters, Missouri

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

  • Saturday

    Sunshine and clouds mixed. A stray shower or thunderstorm is possible. High around 90F. Winds light and variable.

  • Saturday Night

    Clear to partly cloudy. Low 69F. Winds light and variable.

  • Sunday

    Mostly sunny. High 94F. Winds SW at 5 to 10 mph.

  • Sunday Night

    A mostly clear sky. Low 71F. Winds light and variable.

  • Monday

    Generally sunny despite a few afternoon clouds. High 92F. Winds light and variable.

  • Monday Night

    Partly cloudy in the evening followed by scattered thunderstorms after midnight. Low near 70F. Winds light and variable. Chance of rain 40%.

  • Tuesday

    Variable clouds with scattered thunderstorms. High 88F. Winds SW at 5 to 10 mph. Chance of rain 50%.

  • Tuesday Night

    Variable clouds with scattered thunderstorms. Low 69F. Winds light and variable. Chance of rain 50%.

  • Wednesday

    Scattered showers and thunderstorms, especially early in the day. High 82F. Winds NE at 5 to 10 mph. Chance of rain 60%.

  • Wednesday Night

    Partly cloudy with isolated thunderstorms possible. Low 66F. Winds light and variable. Chance of rain 30%.

  • Thursday

    Isolated thunderstorms in the morning, then cloudy skies late. High 83F. Winds NE at 5 to 10 mph. Chance of rain 30%.

  • Thursday Night

    A few clouds. Low 67F. Winds light and variable.

  • Friday

    Partial cloudiness early, with scattered showers and thunderstorms in the afternoon. High 84F. Winds SW at 5 to 10 mph. Chance of rain 50%.

  • Friday Night

    Clear to partly cloudy. Low around 65F. Winds light and variable.

  • Saturday

    Mostly sunny early then becoming mostly cloudy later in the day. High 83F. Winds NE at 5 to 10 mph.

  • Saturday Night

    Partly cloudy skies. Low around 65F. Winds light and variable.

  • Sunday

    Sunshine and clouds mixed. High 83F. Winds NE at 5 to 10 mph.

  • Sunday Night

    Partly cloudy during the evening. A few showers developing later during the night. Low near 65F. Winds ENE at 5 to 10 mph. Chance of rain 30%.

  • Monday

    Partly cloudy skies. High near 85F. Winds ESE at 5 to 10 mph.

  • Monday Night

    Variable clouds with thunderstorms, especially overnight. Low around 65F. Winds ENE at 5 to 10 mph. Chance of rain 40%.

  • Tuesday

    Partly cloudy. High 84F. Winds N at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low 66F. Winds NE at 5 to 10 mph.

Severe Weather Alert Descriptions

 Flood Warning  Statement as of 10:55 am CDT on August 1, 2015


The Flood Warning is cancelled for
the Mississippi River at Grafton.
* At 10:30 am Saturday the stage was 17.7 feet.
* Flood stage is 18.0 feet.
* The river below flood stage at 3:45 am Saturday.
* The river will continue to fall to 16.5 feet by tomorrow morning.

                   Fld latest 7 a.M. Forecast
location stg obs stg 08/02 08/03 08/04 08/05 08/06

Mississippi River
Grafton 18.0 17.67 16.5 16.0 16.0 16.0 16.0


Lat... Lon 3881 9057 3888 9057 3899 9046 3895 9028
      3882 9048





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Saint Peters, Saint Peters, MO

Updated: 11:07 AM CDT

Temperature: 84.0 °F Dew Point: 63 °F Humidity: 49% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Sunny Hill Estates, St. Peters, MO

Updated: 11:01 AM CDT

Temperature: 85.5 °F Dew Point: 58 °F Humidity: 39% Wind: SE at 3.2 mph Pressure: 30.01 in Hourly Precipitation: - Heat Index: 85 °F Graphs

Location: Saint Peters Hills, Saint Peters, MO

Updated: 11:07 AM CDT

Temperature: 84.6 °F Dew Point: 59 °F Humidity: 42% Wind: North at 2.5 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Hunters Valley, Saint Peters, MO

Updated: 10:58 AM CDT

Temperature: 86.4 °F Dew Point: 64 °F Humidity: 47% Wind: Calm Pressure: 30.05 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: Spencer Valley, Saint Peters, MO

Updated: 10:53 AM CDT

Temperature: 81.1 °F Dew Point: 64 °F Humidity: 57% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Park Charles South, Saint Peters, MO

Updated: 11:06 AM CDT

Temperature: 79.3 °F Dew Point: 66 °F Humidity: 67% Wind: North at - Pressure: 30.15 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: Country Crossing - Birdie Hills and Treeshadow, St. Peters, MO

Updated: 10:53 AM CDT

Temperature: 95.4 °F Dew Point: 67 °F Humidity: 40% Wind: South at 4.2 mph Pressure: 29.92 in Hourly Precipitation: - Heat Index: 100 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 11:07 AM CDT

Temperature: 82.1 °F Dew Point: 66 °F Humidity: 59% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 11:00 AM CDT

Temperature: 90.1 °F Dew Point: 64 °F Humidity: 42% Wind: ESE at 3.2 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 92 °F Graphs

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

Updated: 11:07 AM CDT

Temperature: 82.0 °F Dew Point: 60 °F Humidity: 48% Wind: East at 6.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: McClay Trails, Saint Charles, MO

Updated: 10:57 AM CDT

Temperature: 90.0 °F Dew Point: 62 °F Humidity: 39% Wind: NE at 4.3 mph Pressure: 29.84 in Hourly Precipitation: - Heat Index: 90 °F Graphs

Location: Madison Park, Cottleville, MO

Updated: 11:07 AM CDT

Temperature: 84.6 °F Dew Point: 56 °F Humidity: 38% Wind: ESE at 6.7 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

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

Updated: 11:07 AM CDT

Temperature: 82.0 °F Dew Point: 68 °F Humidity: 63% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Public Works Department Building, OFallon, MO

Updated: 11:05 AM CDT

Temperature: 84.1 °F Dew Point: 62 °F Humidity: 48% Wind: ENE at 3.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 11:07 AM CDT

Temperature: 82.1 °F Dew Point: 63 °F Humidity: 50% Wind: East at 1.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 11:05 AM CDT

Temperature: 87.4 °F Dew Point: 61 °F Humidity: 42% Wind: ESE at 3.1 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 11:07 AM CDT

Temperature: 84.3 °F Dew Point: 64 °F Humidity: 50% Wind: NE at 3.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 11:07 AM CDT

Temperature: 84.6 °F Dew Point: 61 °F Humidity: 45% Wind: ENE at 2.5 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 11:05 AM CDT

Temperature: 83.9 °F Dew Point: 62 °F Humidity: 47% Wind: ENE at 3.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Ridgetop Estates, OFallon, MO

Updated: 11:01 AM CDT

Temperature: 87.8 °F Dew Point: 62 °F Humidity: 43% Wind: WNW at 2.7 mph Pressure: 30.12 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 11:03 AM CDT

Temperature: 79.7 °F Dew Point: 51 °F Humidity: 37% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 11:07 AM CDT

Temperature: 85.3 °F Dew Point: 65 °F Humidity: 50% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Carriage Cove Court, Saint Charles, MO

Updated: 11:01 AM CDT

Temperature: 80.6 °F Dew Point: 71 °F Humidity: 73% Wind: North at - Pressure: 29.98 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: Magnolia, OFallon, MO

Updated: 10:55 AM CDT

Temperature: 92.8 °F Dew Point: 66 °F Humidity: 41% Wind: West at 1.6 mph Pressure: 29.78 in Hourly Precipitation: - Heat Index: 96 °F Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 11:07 AM CDT

Temperature: 86.2 °F Dew Point: 60 °F Humidity: 41% Wind: SE at 4.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Woodcliff, Saint Charles, MO

Updated: 11:05 AM CDT

Temperature: 93.0 °F Dew Point: 74 °F Humidity: 55% Wind: ENE at 2.7 mph Pressure: 29.70 in Hourly Precipitation: - Heat Index: 104 °F Graphs

Location: Huntington Downs, Saint Charles, MO

Updated: 11:00 AM CDT

Temperature: 79.0 °F Dew Point: 66 °F Humidity: 63% Wind: North at - Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Royal Oaks, O'Fallon, MO

Updated: 11:07 AM CDT

Temperature: 82.5 °F Dew Point: 66 °F Humidity: 57% Wind: ESE at 5.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Little Oaks Drive, O'Fallon, MO

Updated: 11:00 AM CDT

Temperature: 79.7 °F Dew Point: 69 °F Humidity: 69% Wind: North at - Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 11:07 AM CDT

Temperature: 84.6 °F Dew Point: 63 °F Humidity: 49% Wind: WNW at 2.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 11:00 AM CDT

Temperature: 83.8 °F Dew Point: 68 °F Humidity: 60% Wind: East at 2.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Winghaven, OFallon, MO

Updated: 11:03 AM CDT

Temperature: 83.3 °F Dew Point: 64 °F Humidity: 53% Wind: ESE at 2.7 mph Pressure: 29.92 in Hourly Precipitation: - Heat Index: 85 °F Graphs

Location: Conch Terrace, O'Fallon, MO

Updated: 11:01 AM CDT

Temperature: 80.8 °F Dew Point: 68 °F Humidity: 64% Wind: North at - Pressure: 30.16 in Hourly Precipitation: - Heat Index: 83 °F Graphs

Location: Dardenne Prairie, Dardenne Prairie, MO

Updated: 11:06 AM CDT

Temperature: 86.0 °F Dew Point: 66 °F Humidity: 51% Wind: ENE at 1.3 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 11:07 AM CDT

Temperature: 85.8 °F Dew Point: 67 °F Humidity: 53% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: New Town St Charles, Saint Charles, MO

Updated: 10:54 AM CDT

Temperature: 84.7 °F Dew Point: 64 °F Humidity: 51% Wind: ESE at 6.3 mph Pressure: 30.04 in Hourly Precipitation: - Heat Index: 86 °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 
615 am CDT Sat Aug 1 2015 


Short term: (through tonight) 
issued at 340 am CDT Sat Aug 1 2015 


Scattered thunderstorms have recently developed over northeast 
Missouri and west central Illinois in an small area of low level 
moisture convergence. Recent runs of the rap show this forcing 
eroding around 12z. Atmosphere will become unstable again this 
afternoon...however there will be little in the way of forcing for 
it to act on. Have kept chance probability of precipitation over northeast Missouri and 
west central Illinois...particularly overnight as a shortwave trough 
will move through the upper Midwest which will likely push a mesoscale convective system 
along a frontal boundary over Iowa into into the northern County Warning Area. 


Should be another warm day across the area with 850mb temperatures 
between 18-20c. High temperatures should climb back into the low- 
middle 90s with mixing up to 850mb. 


Britt 


Long term: (sunday through friday) 
issued at 340 am CDT Sat Aug 1 2015 


(sunday and monday) 


Will continue the chance of thunderstorms on Sunday as the cold 
front moves down into the area. Chances will be lower on Sunday 
night and Monday as convergence weakens along the front as it moves 
to the southwest under northwesterly flow aloft. Both days will 
continue to be warm with MOS temperatures in the low-middle 90s and 
850mb temperatures remaining near 20c. 


(Tuesday through friday) 


It still look like middle to late next week will be unsettled with a 
continued chance of showers and thunderstorms in northwest flow 
aloft. Best chance will be Tuesday into Wednesday when both the GFS 
and European model (ecmwf) show a notable trough moving through Missouri and 
Illinois. Temperatures will fall back below normal as 850mb 
temperatures are forecast to be around 15c. 


Britt 


&& 


Aviation: (for the 12z tafs through 12z Sunday morning) 
issued at 610 am CDT Sat Aug 1 2015 


Little change from the previous tafs. Cumulus with bases around 4 to 5 kft 
are expected to develop this morning and dissipate this evening. 
Winds are expected to be southwesterly at or below 8 kts. There is a chance for 
thunderstorms and rain at uin late tonight. However...have kept out of taf at this time due 
to high uncertainty in timing with best chances near the end of 
the taf period. 


Tilly 


&& 


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.