Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 75°
  • Clear
  • Wind: East 5 mph
  • Humidity: 94%
  • Visibility: 7.0 miles
  • Dew Point: 73°
  • Pressure: 30.02 in. +

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Next 12 Hours

2  am
5  am
8  am
11  am
2  pm
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
74°
72°
75°
84°
90°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Clear
  • High: 93 °
  • Low: 70 °
  • Clear
  • Wednesday
  • Clear
  • High: 93 °
  • Low: 71 °
  • Clear
  • Thursday
  • Clear
  • High: 93 °
  • Low: 70 °
  • Clear
  • Friday
  • Clear
  • High: 94 °
  • Low: 71 °
  • Clear
  • Saturday
  • Clear
  • High: 94 °
  • Low: 71 °
  • Clear

Forecast for Saint Charles, Missouri

Updated: 10:03 PM CDT on January 31, 2015

  • Tuesday

    Mainly sunny. High 93F. Winds SSW at 5 to 10 mph.

  • Tuesday Night

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

  • Wednesday

    Mostly sunny skies. High 93F. Winds SSW at 5 to 10 mph.

  • Wednesday Night

    Partly cloudy. Low 71F. Winds light and variable.

  • Thursday

    Sunshine and some clouds. High 93F. Winds light and variable.

  • Thursday Night

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

  • Friday

    A few clouds from time to time. High 94F. Winds SSE at 5 to 10 mph.

  • Friday Night

    Mostly clear skies. Low 71F. Winds light and variable.

  • Saturday

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

  • Saturday Night

    Clear skies. Low 71F. Winds light and variable.

  • Sunday

    Mostly sunny skies. High 93F. Winds S at 5 to 10 mph.

  • Sunday Night

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

  • Monday

    Mostly sunny skies. High around 90F. Winds WSW at 5 to 10 mph.

  • Monday Night

    Mostly clear skies. Low 67F. Winds light and variable.

  • Tuesday

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

  • Tuesday Night

    A few clouds from time to time. Low 63F. Winds light and variable.

  • Wednesday

    Partly cloudy skies. High around 80F. Winds NNE at 5 to 10 mph.

  • Wednesday Night

    Scattered thunderstorms during the evening followed by occasional showers overnight. Low near 60F. Winds NE at 5 to 10 mph. Chance of rain 50%.

  • Thursday

    Scattered thunderstorms. High 79F. Winds ENE at 5 to 10 mph. Chance of rain 60%.

  • Thursday Night

    Variable clouds with scattered thunderstorms. Low near 60F. Winds ENE at 5 to 10 mph. Chance of rain 40%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: New Town St Charles, Saint Charles, MO

Updated: 12:45 AM CDT

Temperature: 77.7 °F Dew Point: 73 °F Humidity: 85% Wind: SE at 3.2 mph Pressure: 30.01 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Huntington Downs, Saint Charles, MO

Updated: 12:50 AM CDT

Temperature: 78.1 °F Dew Point: 71 °F Humidity: 79% Wind: North at - Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 12:53 AM CDT

Temperature: 76.2 °F Dew Point: 73 °F Humidity: 90% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 12:53 AM CDT

Temperature: 76.6 °F Dew Point: 72 °F Humidity: 85% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 12:53 AM CDT

Temperature: 77.8 °F Dew Point: 72 °F Humidity: 83% Wind: SE at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 12:53 AM CDT

Temperature: 74.7 °F Dew Point: 72 °F Humidity: 93% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 12:53 AM CDT

Temperature: 76.5 °F Dew Point: 72 °F Humidity: 87% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 12:53 AM CDT

Temperature: 77.2 °F Dew Point: 73 °F Humidity: 87% Wind: SSE at 2.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

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

Updated: 12:53 AM CDT

Temperature: 77.9 °F Dew Point: 74 °F Humidity: 87% Wind: West at 3.4 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 12:53 AM CDT

Temperature: 75.4 °F Dew Point: 72 °F Humidity: 87% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 12:48 AM CDT

Temperature: 77.9 °F Dew Point: 63 °F Humidity: 60% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Spencer Valley, Saint Peters, MO

Updated: 12:48 AM CDT

Temperature: 77.7 °F Dew Point: 72 °F Humidity: 83% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Alber Pointe Drive, Florissant, MO

Updated: 12:50 AM CDT

Temperature: 77.0 °F Dew Point: 72 °F Humidity: 83% Wind: North at - Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Riverside at Albers Pointe, Florissant, MO

Updated: 12:44 AM CDT

Temperature: 77.0 °F Dew Point: 70 °F Humidity: 83% Wind: North at - Pressure: 30.02 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Hunters Valley, Saint Peters, MO

Updated: 12:38 AM CDT

Temperature: 76.3 °F Dew Point: 71 °F Humidity: 83% Wind: NNE at 1.7 mph Pressure: 30.03 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Saint Peters, Saint Peters, MO

Updated: 12:53 AM CDT

Temperature: 77.5 °F Dew Point: 72 °F Humidity: 83% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Rule Place Court, Maryland Heights, MO

Updated: 12:50 AM CDT

Temperature: 76.3 °F Dew Point: 70 °F Humidity: 82% Wind: North at - Pressure: 29.88 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Saint Peters Hills, Saint Peters, MO

Updated: 12:53 AM CDT

Temperature: 77.2 °F Dew Point: 74 °F Humidity: 90% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 12:47 AM CDT

Temperature: 77.5 °F Dew Point: 73 °F Humidity: 86% Wind: SE at 1.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Maryland Heights, MO

Updated: 12:51 AM CDT

Temperature: 77.3 °F Dew Point: 72 °F Humidity: 85% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Woodcliff, Saint Charles, MO

Updated: 12:43 AM CDT

Temperature: 76.1 °F Dew Point: 76 °F Humidity: 98% Wind: Calm Pressure: 29.69 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Park Charles South, Saint Peters, MO

Updated: 12:46 AM CDT

Temperature: 78.3 °F Dew Point: 71 °F Humidity: 83% Wind: North at - Pressure: 30.13 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Fox Lake Meadows, Florissant, MO

Updated: 12:40 AM CDT

Temperature: 75.2 °F Dew Point: 72 °F Humidity: 90% Wind: SSW at 2.7 mph Pressure: 30.00 in Hourly Precipitation: - Heat Index: 74 °F Graphs

Location: McClay Trails, Saint Charles, MO

Updated: 12:51 AM CDT

Temperature: 75.6 °F Dew Point: 72 °F Humidity: 88% Wind: SSE at 1.6 mph Pressure: 29.82 in Hourly Precipitation: - Heat Index: 76 °F Graphs

Location: Carriage Cove Court, Saint Charles, MO

Updated: 12:50 AM CDT

Temperature: 77.2 °F Dew Point: 72 °F Humidity: 83% Wind: North at - Pressure: 29.96 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Old Farm Estates, St. Louis, MO

Updated: 12:50 AM CDT

Temperature: 75.8 °F Dew Point: 73 °F Humidity: 91% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

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

Updated: 12:53 AM CDT

Temperature: 76.0 °F Dew Point: 73 °F Humidity: 90% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: APRSWXNET, Maryland Heights, MO

Updated: 12:39 AM CDT

Temperature: 78 °F Dew Point: 73 °F Humidity: 85% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 12:53 AM CDT

Temperature: 75.7 °F Dew Point: 72 °F Humidity: 87% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 12:53 AM CDT

Temperature: 77.0 °F Dew Point: 72 °F Humidity: 85% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Honeygrove Court, Saint Louis, MO

Updated: 12:50 AM CDT

Temperature: 78.1 °F Dew Point: 73 °F Humidity: 83% Wind: North at - Pressure: 30.07 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 12:45 AM CDT

Temperature: 77.0 °F Dew Point: 73 °F Humidity: 88% Wind: SSW at 3.2 mph Pressure: 29.95 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Public Works Department Building, OFallon, MO

Updated: 12:50 AM CDT

Temperature: 78.3 °F Dew Point: 72 °F Humidity: 80% Wind: ENE at 1.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 81 °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 
1117 PM CDT Monday Aug 31 2015 


Update: 
issued at 858 PM CDT Monday Aug 31 2015 


The isolated showers/storms across parts of southeast and east 
central MO and southwest Illinois have dissipated this evening due to the 
loss of daytime heating with much of the convective cloud debris 
also dissipating as well. May have some nocturnal development of 
convection late tonight/early Tuesday morning across parts of 
southwest Illinois...over the eastern portion of the forecast area just 
west of an upper level low. The latest hrrr model run does 
generate convection in this area...although the latest NAM model 
run does not have any quantitative precipitation forecast in this area late tonight as the 
previous run of this model did. Will just keep the slight chance 
probability of precipitation over the eastern portion of the forecast area beginning at 
11z Tuesday. A mild muggy night can be expected with south- 
southeasterly surface winds and high surface dew points. There may 
be some patchy light fog/haze. The lows tonight should be similar 
to the previous night and about 5 to 10 degrees above normal for 
early September. 


Gks 


&& 


Short term: (through late tonight) 
issued at 304 PM CDT Monday Aug 31 2015 


Thunderstorms that produced heavy rainfall over the eastern County Warning Area this 
morning dissipated with the loss of the weak low level moisture 
convergence on the west side of the upper level low current centered 
over Indiana. More recently...atmosphere has become very unstable 
with MLCAPES of 2000-3000 j/kg with little cin. Shear axis has 
moved down into southern Missouri...so think best chance for 
thunderstorms will be over the Eastern Ozarks...particularly since 
that is traditionally where orographic lift has helped generate late 
afternoon/early evening thunderstorms in the past. Would expect any 
convection to diminish with loss of daytime heating. 


Additional thunderstorms will be possible once again late tonight 
over the eastern County Warning Area as both the NAM and GFS are pointing toward to 
some weak 925-850mb moisture convergence developing once again on 
the west side of the upper level low. Will go with a slight chance 
of thunderstorms late tonight through tomorrow morning. 


Britt 


Long term: (tuesday through next monday) 
issued at 304 PM CDT Monday Aug 31 2015 


(tuesday through thursday) 


Plan to go with a dry forecast from Tuesday afternoon through 
Thursday as forcing for thunderstorms looks weak as upper low moves 
east and upper ridge axis builds over the area which should suppress 
thunderstorm development. Don't expect much chance in the warm and 
humid conditions. Based highs on mixing down 850mb temperatures 
which are close to +20c. 


(Friday through monday) 


Forecast still looks on track for mainly dry weather early on for 
the Holiday weekend as the upper level ridge axis moves over the 
area which will suppress thunderstorms activity on Friday and 
Saturday. This ridge axis will begin to break down by Sunday...so 
will keep the slight chance of thunderstorms over northeast Missouri 
on Sunday. Will go with a wider chance of thunderstorms on Labor 
Day as both the GFS and European model (ecmwf) show the ridge axis moving south of 
the area at the same time a cold front enters the area from the 
north. Still went above normal through the Holiday weekend as we 
will stay in the same warm and humid airmass until the cold front 
moves through. 


Britt 


&& 


Aviation: (for the 06z tafs through 06z Tuesday night) 
issued at 1105 PM CDT Monday Aug 31 2015 


Weak upper low/shear axis will become centered over Indiana by 
midday Tuesday. Suspect that will keep most of the thunderstorms and rain deelopment 
east of the terminals. While a isolated storm possible, no reason 
to put it in the forecast. Patchy fog overnight, basically a 
persistence forecast. 


Specifics for kstl: VFR dry forecast continues. High pressure 
begins building thus the the isolated afternoon thunderstorms will 
become even more isolated. Would not be surprised to see some 
morning fog/haze start appearing the next couple of days. 


Jpk 


&& 


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


$$ 


Weather forecast office lsx 



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