Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 38°
  • Clear
  • Wind: SE 6 mph
  • Humidity: 83%
  • Visibility: 10.0 miles
  • Dew Point: 33°
  • Pressure: 29.89 in. -
  • Heat Index: 34

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Next 12 Hours

12  am
3  am
6  am
9  am
12  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Fog
Fog
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
37°
37°
37°
45°
55°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Mostly Cloudy
  • High: 57 °
  • Low: 48 °
  • Mostly Cloudy
  • Sunday
  • Chance of Rain
  • High: 66 °
  • Low: 25 °
  • Chance of Rain
  • Monday
  • Partly Cloudy
  • High: 32 °
  • Low: 21 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 43 °
  • Low: 34 °
  • Partly Cloudy
  • Wednesday
  • Chance of Rain
  • High: 54 °
  • Low: 28 °
  • Chance of Rain

Forecast for Saint Charles, Missouri

Updated: 9:00 PM CST on November 28, 2014

  • Friday

    Clear. High of 48F. Winds from the SSE at 10 to 15 mph.

  • Friday Night

    Partly cloudy. Low of 37F. Winds from the SSE at 5 to 15 mph.

  • Saturday

    Mostly cloudy. Fog early. High of 57F. Winds from the South at 10 to 15 mph.

  • Saturday Night

    Partly cloudy. Low of 48F. Winds from the SSW at 5 to 10 mph.

  • Sunday

    Partly cloudy with a chance of rain in the morning, then overcast with a chance of rain. High of 66F. Winds from the SSW at 5 to 15 mph shifting to the West in the afternoon. Chance of rain 20%.

  • Sunday Night

    Partly cloudy with a chance of snow, then ice pellets after midnight. Low of 25F with a windchill as low as 16F. Winds from the NNW at 10 to 15 mph. Chance of precipitation 20% .

  • Monday

    Partly cloudy. High of 32F with a windchill as low as 14F. Breezy. Winds from the North at 10 to 20 mph.

  • Monday Night

    Partly cloudy. Low of 21F with a windchill as low as 14F. Winds from the ENE at 5 to 15 mph.

  • Tuesday

    Overcast in the morning, then partly cloudy. High of 43F. Winds from the SSE at 5 to 10 mph.

  • Tuesday Night

    Mostly cloudy in the evening, then overcast. Fog overnight. Low of 34F with a windchill as low as 27F. Winds from the South at 10 to 15 mph.

  • Wednesday

    Overcast with a chance of rain in the afternoon. High of 54F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Mostly cloudy with a chance of snow. Low of 28F. Winds from the SSW at 10 to 15 mph. Chance of snow 60% with accumulations up to 1 in. possible.

  • Thursday

    Overcast with a chance of rain. Fog early. High of 45F. Winds from the NNW at 10 to 15 mph. Chance of rain 40%.

  • Thursday Night

    Overcast. Low of 32F. Winds from the NNE at 10 to 15 mph.

  • Friday

    Partly cloudy. High of 52F. Winds from the NNE at 5 to 15 mph.

  • Friday Night

    Partly cloudy. Low of 32F. Winds from the ENE at 5 to 10 mph.

  • Saturday

    Mostly cloudy. High of 37F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Low of 30F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 41F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 28F. Winds less than 5 mph.

  • Monday

    Mostly cloudy with a chance of snow. Fog early. High of 39F. Winds less than 5 mph. Chance of snow 20%.

  • Monday Night

    Overcast. Fog overnight. Low of 28F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 36F. Winds from the NW at 5 to 10 mph.

  • Tuesday Night

    Clear. Low of 28F with a windchill as low as 16F. Winds from the WNW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Stable Ridge Estates, Saint Charles, MO

Updated: 11:53 PM CST

Temperature: 41.4 °F Dew Point: 30 °F Humidity: 63% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Fox Hill, Saint Charles, MO

Updated: 11:47 PM CST

Temperature: 40.5 °F Dew Point: 34 °F Humidity: 77% Wind: East at 2.7 mph Pressure: 29.78 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 11:53 PM CST

Temperature: 40.4 °F Dew Point: 35 °F Humidity: 82% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 11:54 PM CST

Temperature: 40.1 °F Dew Point: 33 °F Humidity: 75% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 11:50 PM CST

Temperature: 42.3 °F Dew Point: 36 °F Humidity: 78% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 11:54 PM CST

Temperature: 41.6 °F Dew Point: 35 °F Humidity: 78% Wind: East at 2.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 11:53 PM CST

Temperature: 40.6 °F Dew Point: 35 °F Humidity: 80% Wind: NE at 2.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 11:54 PM CST

Temperature: 42.4 °F Dew Point: 37 °F Humidity: 80% Wind: SSE at 1.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

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

Updated: 11:54 PM CST

Temperature: 43.0 °F Dew Point: 34 °F Humidity: 70% Wind: South at 2.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 11:54 PM CST

Temperature: 41.5 °F Dew Point: 35 °F Humidity: 76% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 11:45 PM CST

Temperature: 41.7 °F Dew Point: 28 °F Humidity: 58% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 11:54 PM CST

Temperature: 42.6 °F Dew Point: 36 °F Humidity: 76% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 11:50 PM CST

Temperature: 40.4 °F Dew Point: 35 °F Humidity: 82% Wind: South at 4.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 11:47 PM CST

Temperature: 42.0 °F Dew Point: 36 °F Humidity: 78% Wind: SE at 1.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 11:49 PM CST

Temperature: 42.1 °F Dew Point: 31 °F Humidity: 65% Wind: SSE at 2.2 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 11:50 PM CST

Temperature: 41.2 °F Dew Point: 35 °F Humidity: 79% Wind: Calm Pressure: 29.37 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

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

Updated: 11:44 PM CST

Temperature: 41.4 °F Dew Point: 36 °F Humidity: 81% Wind: SSW at 2.7 mph Pressure: 29.78 in Hourly Precipitation: - Windchill: 41 °F Graphs

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

Updated: 11:54 PM CST

Temperature: 42.1 °F Dew Point: 36 °F Humidity: 79% Wind: SSE at 1.0 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 11:54 PM CST

Temperature: 41.4 °F Dew Point: 36 °F Humidity: 81% Wind: South at 2.2 mph Pressure: 29.32 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 11:35 PM CST

Temperature: 42.8 °F Dew Point: 34 °F Humidity: 71% Wind: East at 3.6 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 11:53 PM CST

Temperature: 41.9 °F Dew Point: 36 °F Humidity: 78% Wind: South at 4.0 mph Pressure: 29.23 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 11:49 PM CST

Temperature: 41.5 °F Dew Point: 35 °F Humidity: 78% Wind: SSE at 3.2 mph Pressure: 29.75 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 11:54 PM CST

Temperature: 41.2 °F Dew Point: 33 °F Humidity: 72% Wind: SW at 2.7 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

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

Updated: 11:52 PM CST

Temperature: 39.9 °F Dew Point: 35 °F Humidity: 81% Wind: ESE at 3.2 mph Pressure: 29.71 in Hourly Precipitation: - Windchill: 38 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 11:52 PM CST

Temperature: 40.4 °F Dew Point: 35 °F Humidity: 80% Wind: SSE at 3.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 11:54 PM CST

Temperature: 41.9 °F Dew Point: 34 °F Humidity: 74% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

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

Updated: 11:54 PM CST

Temperature: 41.5 °F Dew Point: 34 °F Humidity: 73% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 11:53 PM CST

Temperature: 41.6 °F Dew Point: 36 °F Humidity: 80% Wind: South at 1.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 11:54 PM CST

Temperature: 41.6 °F Dew Point: 34 °F Humidity: 74% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 11:50 PM CST

Temperature: 42.6 °F Dew Point: 35 °F Humidity: 75% Wind: SSE at 4.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 11:53 PM CST

Temperature: 41.8 °F Dew Point: 35 °F Humidity: 77% Wind: South at 3.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

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

Updated: 11:54 PM CST

Temperature: 41.0 °F Dew Point: 34 °F Humidity: 77% Wind: SE at 4.0 mph Pressure: 31.64 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 11:53 PM CST

Temperature: 41.5 °F Dew Point: 34 °F Humidity: 75% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 11:50 PM CST

Temperature: 39.3 °F Dew Point: 32 °F Humidity: 74% Wind: SE at 4.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 37 °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 
1153 PM CST Fri Nov 28 2014 


Short term: (through late tonight) 
issued at 354 PM CST Fri Nov 28 2014 


Warm front currently over eastern Missouri will lift northeast of 
the County Warning Area this evening. Models show rapid advection of low level 
moisture into the area later tonight which should bring some stratus 
into the area after midnight. Combination of the clouds and south 
winds should keep temperatures warmer than previous nights. 


Britt 


Long term: (saturday through next friday) 
issued at 354 PM CST Fri Nov 28 2014 


(saturday through monday) 


Main focus during this period will be the potential for some 
freezing rain on Sunday night into Monday. Still appears that highs 
will be above average this weekend as south winds will be advecting 
warmer air into the area and 850mb temperatures will be around 
+10c. Given that lows tonight will only be in the mid 30s to the 
lower 40s, a diurnal range of 20 degrees is reasonable with warm air 
advection even with some stratus during the morning hours. Lows on 
Saturday night will likely not fall much given the breezy conditions 
and increasing mid and high clouds. 


By Sunday a sharp cold front will enter the County Warning Area from the northwest 
by late morning, and exit the southern County Warning Area by early evening. Models 
are in generally good agreement that the surface temperatures will 
fall below freezing from northwest to southeast on Sunday night. 
Some light precipitation is still expected to develop mainly over 
the southeast half of the County Warning Area during the day on Sunday and continue 
into Monday in response to both mid and low level frontogenesis and 
some ascent associated with a shortwave trough that will move 
through the area late on Monday. The rain will change to freezing 
rain as the surface temperatures drop below freezing. At this point 
only expect a light glazing in some areas over southeast Missouri 
into southwest Illinois as we expect above normal temperatures over 
the week and only expect light precipitation with this event. 
Temperatures on Monday will be quite cold with brisk northwest winds 
with highs only in the mid 20s to around 30. 


(Tuesday through friday) 


Confidence in the forecast for next week is not high as GFS and 
European model (ecmwf) have different upper flow patterns as soon as Wednesday which 
results in the GFS having precipitation and the European model (ecmwf) not having any. 
Overall prefer the European model (ecmwf) at least early on because of it's 
run-to-run continuity. Will keep Tuesday and Wednesday dry for now 
as surface high moves from the northern plains into the Mississippi 
Valley. Precipitation chances will increase on Thursday as moisture 
increases from the south as the surface high moves east. The chance 
will continue into Friday as another shortwave trough moves across 
the area. Temperatures will be close to normal during the period, 
but will slowly warm a few degrees as the surface high moves off to 
the east. 


Britt 


&& 


Aviation: (for the 06z tafs through 06z Saturday night) 
issued at 1145 PM CST Fri Nov 28 2014 


Primary focus remains on expected stratus development later 
tonight. Have latched on to model data that depicts the 
development of the stratus a bit later...with most sites not 
seeing it until close to 12z. The main push coming from la and 
southern Arkansas will likely take it east of most taf sites, but still 
think broken coverage will still form for several hours during the 
morning for areas further west. By 18z, the stratus is expected to 
have cleared out from the taf sites, remaining in a holding 
pattern to the east. With the flare up of the low level jet again 
on Saturday night, this stratus will likely again expand to the 
west, but after 06z. Otherwise, look for southerly winds to 
persist thru the period. Low level wind shear conditions ongoing until mid 
Saturday morning, with another round of low level wind shear possible for stl 
Metro sites later Saturday night, but marginal enough to preclude 
mention at this time. 


Specifics for kstl: based on current satellite info, the bulk of 
the stratus will likely form to the east and a bit later on 
timing. Have adjusted primarily for the timing, with a more broken 
coverage in stratus still expected to develop even for areas 
further west over the terminal but will be more short-lived than 
originally thought. Will likely see another round later on 
Saturday night with low level jet re-firing. Otherwise, low level wind shear 
ongoing until late morning with another event possible again 
Saturday night. 


Tes 


&& 


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


$$ 


Weather forecast office lsx 






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