Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 71°
  • Clear
  • Wind: NNE 9 mph
  • Humidity: 70%
  • Visibility: 10.0 miles
  • Dew Point: 61°
  • Pressure: 30.09 in. +

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Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
72°
64°
63°
55°
68°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Clear
  • High: 79 °
  • Low: 59 °
  • Clear
  • Friday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 70 °
  • Chance of a Thunderstorm
  • Saturday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 73 °
  • Chance of T-Storms
  • Sunday
  • Partly Cloudy
  • High: 88 °
  • Low: 63 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 79 °
  • Low: 55 °
  • Partly Cloudy

Forecast for Saint Charles, Missouri

Updated: 10:00 PM CDT on July 23, 2014

  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 84F. Winds from the North at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy in the evening, then clear. Low of 52F. Winds from the NNE at 5 to 15 mph.

  • Thursday

    Clear. High of 79F. Winds from the NE at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 59F. Winds from the ESE at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 82F. Winds from the SSE at 5 to 15 mph. Chance of rain 20%.

  • Friday Night

    Clear 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 70F. Winds from the South at 5 to 15 mph. Chance of rain 30%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 91F. Winds from the WSW at 5 to 10 mph. Chance of rain 30%.

  • Saturday Night

    Mostly cloudy with a chance of a thunderstorm and a chance of rain, then a chance of a thunderstorm and rain after midnight. Fog overnight. Low of 73F. Winds from the SW at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Mostly cloudy in the morning, then clear. High of 88F. Winds from the WNW at 5 to 15 mph.

  • Sunday Night

    Clear. Low of 63F. Winds from the NW at 5 to 15 mph.

  • Monday

    Partly cloudy. High of 79F. Winds from the NNW at 10 to 15 mph.

  • Monday Night

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

  • Tuesday

    Clear. High of 81F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 54F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 79F. Winds less than 5 mph.

  • Wednesday Night

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

  • Thursday

    Clear with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Clear with a chance of a thunderstorm. High of 79F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 79F. Winds less than 5 mph. Chance of rain 50%.

  • Saturday Night

    Clear. Fog overnight. Low of 63F. Winds less than 5 mph.

  • Sunday

    Clear. High of 81F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 63F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Flood Warning  Statement as of 8:33 PM CDT on July 23, 2014


The Flood Warning continues for
the Mississippi River at Grafton
* until late Thursday night.
* At 8:00 PM Wednesday the stage was 18.3 feet.
* Flood stage is 18.0 feet.
* Forecast: the river will continue to fall to below flood stage by
after midnight tonight.

                   Fld latest 7 a.M. Forecast
location stg obs stg 07/24 07/25 07/26 07/27 07/28

Mississippi River
Grafton 18.0 18.27 17.8 17.0 16.4 15.9 15.9




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








Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Fox Hill, Saint Charles, MO

Updated: 9:09 PM CDT

Temperature: 72.3 °F Dew Point: 56 °F Humidity: 57% Wind: Calm Pressure: 29.47 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 9:08 PM CDT

Temperature: 73.8 °F Dew Point: 63 °F Humidity: 68% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 9:09 PM CDT

Temperature: 73.8 °F Dew Point: 62 °F Humidity: 66% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 9:05 PM CDT

Temperature: 74.8 °F Dew Point: 63 °F Humidity: 67% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 9:09 PM CDT

Temperature: 74.1 °F Dew Point: 63 °F Humidity: 69% Wind: NE at 3.0 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 9:09 PM CDT

Temperature: 73.9 °F Dew Point: 63 °F Humidity: 69% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 8:23 PM CDT

Temperature: 75.6 °F Dew Point: 64 °F Humidity: 65% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 9:02 PM CDT

Temperature: 75.0 °F Dew Point: 53 °F Humidity: 46% Wind: ENE at 9.0 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 9:09 PM CDT

Temperature: 73.0 °F Dew Point: 64 °F Humidity: 73% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 9:05 PM CDT

Temperature: 74.7 °F Dew Point: 64 °F Humidity: 69% Wind: East at 2.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 9:05 PM CDT

Temperature: 73.6 °F Dew Point: 64 °F Humidity: 71% Wind: South at 3.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 9:02 PM CDT

Temperature: 74.7 °F Dew Point: 64 °F Humidity: 69% Wind: ENE at 2.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Maryland Heights, MO

Updated: 9:07 PM CDT

Temperature: 74.8 °F Dew Point: 64 °F Humidity: 69% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 9:05 PM CDT

Temperature: 73.2 °F Dew Point: 58 °F Humidity: 59% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 9:02 PM CDT

Temperature: 74.3 °F Dew Point: 62 °F Humidity: 66% Wind: Calm Pressure: 30.02 in Hourly Precipitation: - Heat Index: 76 °F Graphs

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

Updated: 9:09 PM CDT

Temperature: 74.5 °F Dew Point: 64 °F Humidity: 69% Wind: North at 1.0 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 9:09 PM CDT

Temperature: 72.7 °F Dew Point: 61 °F Humidity: 66% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 9:09 PM CDT

Temperature: 74.3 °F Dew Point: 64 °F Humidity: 69% Wind: ENE at 4.9 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 9:01 PM CDT

Temperature: 75.3 °F Dew Point: 62 °F Humidity: 63% Wind: NE at 3.0 mph Pressure: 29.42 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 8:58 PM CDT

Temperature: 75.0 °F Dew Point: 62 °F Humidity: 63% Wind: NW at 3.2 mph Pressure: 29.99 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 9:08 PM CDT

Temperature: 77.5 °F Dew Point: 65 °F Humidity: 65% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

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

Updated: 9:09 PM CDT

Temperature: 76.1 °F Dew Point: 66 °F Humidity: 72% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 9:09 PM CDT

Temperature: 74.9 °F Dew Point: 62 °F Humidity: 65% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 9:09 PM CDT

Temperature: 74.9 °F Dew Point: 62 °F Humidity: 64% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 9:09 PM CDT

Temperature: 74.5 °F Dew Point: 62 °F Humidity: 64% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 9:05 PM CDT

Temperature: 75.3 °F Dew Point: 64 °F Humidity: 67% Wind: ENE at 3.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 9:08 PM CDT

Temperature: 73.9 °F Dew Point: 64 °F Humidity: 72% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

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

Updated: 9:09 PM CDT

Temperature: 73.0 °F Dew Point: 63 °F Humidity: 70% Wind: NE at 5.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 9:09 PM CDT

Temperature: 73.0 °F Dew Point: 65 °F Humidity: 76% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 9:05 PM CDT

Temperature: 73.4 °F Dew Point: 52 °F Humidity: 48% Wind: North at 2.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 8:58 PM CDT

Temperature: 74.8 °F Dew Point: 63 °F Humidity: 67% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 9:03 PM CDT

Temperature: 75.1 °F Dew Point: 62 °F Humidity: 63% Wind: NNE at 1.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 9:09 PM CDT

Temperature: 74.7 °F Dew Point: 62 °F Humidity: 64% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Timber Ridge, Godfrey, IL

Updated: 9:05 PM CDT

Temperature: 70.0 °F Dew Point: 64 °F Humidity: 82% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Royal Oaks, O'Fallon, MO

Updated: 9:09 PM CDT

Temperature: 73.3 °F Dew Point: 64 °F Humidity: 73% Wind: NE at 2.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Brecht Ln, Godfrey, IL

Updated: 9:07 PM CDT

Temperature: 70.0 °F Dew Point: 60 °F Humidity: 72% Wind: Calm Pressure: 29.96 in Hourly Precipitation: - 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 
703 PM CDT Wed Jul 23 2014 


Short term: (through late tonight) 
issued at 333 PM CDT Wed Jul 23 2014 


Front has pushed into southeast MO and extreme southern Illinois this 
afternoon. Although a few storms have been able to form in the 
residual instability north of the front they too are sagging south, 
and should exit southern tip of Reynolds County no later than 22z. 


Weather trends for the forecast area heading into the overnight hours will be 
controlled by large high pressure ridge working its way south from 
the upper Mississippi Valley. Although dewpoints pooled north of the 
frontal boundary have kept humidity levels fairly high along and 
south of I-70 this afternoon, leading edge of much drier air is 
currently working into northern sections of the fa, and this drier 
airmass will overspread the entire County Warning Area throughout the night. 
This dry and cool airmass along with clear skies should yield min 
temps that are about 10 degrees below late July averages, with lows 
expected range from the mid 50s to low 60s. 


Truett 


Long term: (thursday through next wednesday) 
issued at 333 PM CDT Wed Jul 23 2014 


Surface ridge will build southeast from Wisconsin into the 
mid-Mississippi Valley on Thursday, and then continue east into the 
Ohio Valley Thursday night into Friday. Should see temperatures 
well below normal Thursday and Thursday night with low humidity. As 
the high moves into the mid-Atlantic region on Friday, we should see 
a return of more typical Summer heat and humidity, especially across 
central and northeast Missouri as southerly flow ramps up. Could 
see some warm advection showers/thunderstorms Friday, primarily 
across northern/northeastern portions of the County warning forecast area as the low level 
jet strengthens ahead of a weak shortwave rounding the upper level 
ridge. This should suppress temperatures somewhat on Friday 
afternoon. 


By Saturday the next strong ridge-running shortwave will be dipping 
southeast out of Canada into the northern plains and upper Midwest. 
Strong southerly flow will bring more heat and humidity into the 
region, and this will likely be the warmest day of the next 7 with 
highs in the middle...and perhaps upper 90s. The shortwave will 
phase with the long wave trof over eastern North America allowing 
another cool Canadian airmass to dip into the eastern Continental U.S.. medium 
range guidance is in decent agreement that the cold front ahead of 
this airmass will plow through the area on Sunday with another shot 
at precipitation. There are some discrepancies between the GFS and 
European model (ecmwf) as to the extent and perhaps the intensity of the 
precipitation, so will stick with mid-high chance pops at this time. 
After the front moves through and high pressure moves in, expect 
another round of spectacular late July weather with below normal 
temperatures and low humidity into the middle of next week. 


Carney 


&& 


Aviation: (for the 00z tafs through 00z Thursday evening) 
issued at 659 PM CDT Wed Jul 23 2014 


High pressure will continue to build into the region thru the prd 
with diurnal cu and a light NE breeze becoming Erly by Thursday. 


Specifics for kstl: 


VFR fcst thru the prd with diurnal cu and a light NE breeze 
eventually becoming southeast by Thursday evening. 


2% 


&& 


Preliminary point temperatures/pops: 
Saint Louis 61 80 64 87 / 5 0 5 10 
Quincy 57 79 60 85 / 0 0 30 40 
Columbia 60 80 62 91 / 0 0 10 10 
Jefferson City 60 81 61 91 / 0 0 10 10 
Salem 56 79 58 86 / 10 0 0 10 
Farmington 58 79 58 85 / 10 0 0 5 


&& 


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


$$ 


Weather forecast office lsx 












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