Saint Charles, 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

  • 25°
  • Clear
  • Wind: ESE 8 mph
  • Humidity: 88%
  • Visibility: 7.0 miles
  • Dew Point: 22°
  • Pressure: 30.26 in. -
  • Heat Index: 16

Select a Section

Click a section below for more information.

Next 12 Hours

6  am
9  am
12  pm
3  pm
6  pm
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
25°
30°
45°
46°
45°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Partly Cloudy
  • High: 46 °
  • Low: 36 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 61 °
  • Low: 50 °
  • Partly Cloudy
  • Sunday
  • Chance of Rain
  • High: 57 °
  • Low: 27 °
  • Chance of Rain
  • Monday
  • Partly Cloudy
  • High: 34 °
  • Low: 23 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 41 °
  • Low: 32 °
  • Partly Cloudy

Forecast for Saint Charles, Missouri

Updated: 3:00 AM CST on November 28, 2014

  • Friday

    Clear in the morning, then partly cloudy. High of 46F. Winds from the SSE at 10 to 15 mph.

  • Friday Night

    Partly cloudy. Low of 36F. Winds from the South at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 61F. Winds from the South at 5 to 15 mph.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 50F. Winds from the SSW at 5 to 10 mph.

  • Sunday

    Partly cloudy with a chance of rain. High of 57F. Winds from the SW at 10 to 15 mph. Chance of rain 20%.

  • Sunday Night

    Overcast with a chance of snow. Low of 27F. Breezy. Winds from the NNW at 15 to 20 mph.

  • Monday

    Overcast. High of 34F with a windchill as low as 16F. Breezy. Winds from the NNE at 15 to 20 mph.

  • Monday Night

    Partly cloudy. Low of 23F. Winds from the ENE at 5 to 15 mph.

  • Tuesday

    Partly cloudy. High of 41F. Winds from the SSE at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low of 32F with a windchill as low as 25F. Winds from the SW at 5 to 10 mph.

  • Wednesday

    Mostly cloudy. High of 48F. Winds less than 5 mph.

  • Wednesday Night

    Overcast. Low of 23F. Winds from the ESE at 5 to 10 mph.

  • Thursday

    Overcast with a chance of rain. Fog early. High of 55F. Winds from the South at 10 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Overcast with a chance of rain. Fog overnight. Low of 32F. Winds from the SSW at 5 to 15 mph shifting to the West after midnight. Chance of rain 50%.

  • Friday

    Mostly cloudy. Fog early. High of 37F with a windchill as low as 25F. Winds from the NNW at 10 to 15 mph.

  • Friday Night

    Mostly cloudy. Low of 27F. Winds from the NNE at 5 to 15 mph.

  • Saturday

    Partly cloudy. Fog early. High of 39F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Low of 25F. Winds less than 5 mph.

  • Sunday

    Mostly cloudy. High of 39F. Winds less than 5 mph.

  • Sunday Night

    Mostly cloudy. Fog overnight. Low of 23F. Winds less than 5 mph.

  • Monday

    Overcast with a chance of snow. Fog early. High of 34F. Winds less than 5 mph. Chance of snow 30% with accumulations up to 1 in. possible.

  • Monday Night

    Clear. Fog overnight. Low of 23F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Stable Ridge Estates, Saint Charles, MO

Updated: 7:05 AM CST

Temperature: 26.2 °F Dew Point: 17 °F Humidity: 68% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 7:05 AM CST

Temperature: 26.3 °F Dew Point: 24 °F Humidity: 92% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 7:06 AM CST

Temperature: 26.4 °F Dew Point: 22 °F Humidity: 84% Wind: ESE at 5.8 mph Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 7:05 AM CST

Temperature: 27.4 °F Dew Point: 25 °F Humidity: 90% Wind: ESE at 1.0 mph Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 7:06 AM CST

Temperature: 27.3 °F Dew Point: 25 °F Humidity: 91% Wind: East at 2.0 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 7:06 AM CST

Temperature: 26.4 °F Dew Point: 24 °F Humidity: 92% Wind: ESE at 1.0 mph Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 7:05 AM CST

Temperature: 26.2 °F Dew Point: 24 °F Humidity: 91% Wind: West at 2.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 7:06 AM CST

Temperature: 27.0 °F Dew Point: 25 °F Humidity: 91% Wind: SE at 1.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

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

Updated: 7:06 AM CST

Temperature: 27.0 °F Dew Point: 22 °F Humidity: 82% Wind: West at 6.0 mph Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 7:06 AM CST

Temperature: 27.1 °F Dew Point: 25 °F Humidity: 88% Wind: SSE at 3.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 7:00 AM CST

Temperature: 25.7 °F Dew Point: 17 °F Humidity: 69% Wind: SSE at 3.0 mph Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 7:06 AM CST

Temperature: 27.1 °F Dew Point: 25 °F Humidity: 91% Wind: SW at 2.0 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 6:59 AM CST

Temperature: 27.7 °F Dew Point: 26 °F Humidity: 91% Wind: SE at 9.0 mph Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 7:04 AM CST

Temperature: 25.5 °F Dew Point: 18 °F Humidity: 72% Wind: East at 6.0 mph Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 7:00 AM CST

Temperature: 26.4 °F Dew Point: 24 °F Humidity: 92% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

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

Updated: 7:00 AM CST

Temperature: 26.1 °F Dew Point: 24 °F Humidity: 91% Wind: South at 4.7 mph Pressure: 30.15 in Hourly Precipitation: - Windchill: 20 °F Graphs

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

Updated: 7:06 AM CST

Temperature: 26.1 °F Dew Point: 24 °F Humidity: 90% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 7:06 AM CST

Temperature: 26.1 °F Dew Point: 25 °F Humidity: 97% Wind: South at 4.7 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 7:06 AM CST

Temperature: 27.0 °F Dew Point: 22 °F Humidity: 83% Wind: SE at 1.3 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 6:54 AM CST

Temperature: 26.1 °F Dew Point: 25 °F Humidity: 95% Wind: East at 1.1 mph Pressure: 30.13 in Hourly Precipitation: - Windchill: 26 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 7:06 AM CST

Temperature: 27.0 °F Dew Point: 22 °F Humidity: 83% Wind: SW at 2.5 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

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

Updated: 6:52 AM CST

Temperature: 25.5 °F Dew Point: 25 °F Humidity: 98% Wind: ESE at 5.8 mph Pressure: 30.10 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 7:06 AM CST

Temperature: 25.3 °F Dew Point: 23 °F Humidity: 91% Wind: SSE at 5.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 7:06 AM CST

Temperature: 26.4 °F Dew Point: 23 °F Humidity: 86% Wind: SE at 2.3 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

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

Updated: 7:06 AM CST

Temperature: 25.7 °F Dew Point: 23 °F Humidity: 88% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 7:06 AM CST

Temperature: 26.4 °F Dew Point: 24 °F Humidity: 92% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 7:06 AM CST

Temperature: 26.1 °F Dew Point: 23 °F Humidity: 87% Wind: ESE at 1.3 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 7:04 AM CST

Temperature: 27.0 °F Dew Point: 25 °F Humidity: 91% Wind: SSE at 5.0 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 7:06 AM CST

Temperature: 26.7 °F Dew Point: 25 °F Humidity: 92% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

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

Updated: 7:06 AM CST

Temperature: 25.0 °F Dew Point: 23 °F Humidity: 91% Wind: SE at 5.0 mph Pressure: 33.05 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 7:06 AM CST

Temperature: 26.6 °F Dew Point: 22 °F Humidity: 82% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 7:05 AM CST

Temperature: 26.0 °F Dew Point: 24 °F Humidity: 91% Wind: SE at 7.0 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 18 °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 
553 am CST Fri Nov 28 2014 


Short term: (today through saturday) 
issued at 332 am CST Fri Nov 28 2014 


Cold high pressure over the central U.S. Will drift east today and 
return flow will bring warmer air to the mid Mississippi Valley. 
Expect temperatures to rise to near seasonal normals in the upper 
40s to low 50s. With southerly flow we should see increasing low 
level moisture. The last several model runs have been pretty 
consistent in bringing high relative humidity into the area at or below 925mb. Now 
the sref is in on it showing high probabilities of low ceilings 
across the area for much of the day Saturday. Have therefore 
increased cloud cover and lowered temperatures slightly for 
Saturday. Models continue to spit out light quantitative precipitation forecast in this strong 
moisture return pattern; have kept forecast dry though since this is 
a known issue with the models in these situations. BUFKIT soundings 
indicate weak subsidence in the moist layer, so I feel the chance 
for precip is very low. 


Carney 


Long term: (tonight through thursday) 
issued at 417 am CST Fri Nov 28 2014 


The shortwave currently over British Columbia will deepen and slide 
into the northern plains Saturday night. This will allow a very 
cold but shallow airmass to dip into the upper Midwest. Guidance 
has been pretty consistent with the speed of the resulting cold 
front, which should stay north of our area Saturday night. Should 
continue to be cloudy/mostly cloudy with a decent southwest wind 
overnight. This would tend to keep temperatures up overnight so 
tried to stick closer to warmer guidance. 


Cold front will dip across the area on Sunday driven by a 
1035-1040mb Canadian high. Typically, the models are too slow with 
the infiltration of these kinds of very cold airmasses. To try to 
compensate for this, have leaned heavily on 2m temperatures from the 
NAM which seem to be about the coldest and most aggressive with the 
cold advection. With that in mind, front should be through Quincy 
by 18z, and through the stl Metro before 00z. While temps ahead of 
the front should remain mild, but behind the front temperatures 
should drop rapidly into the 30s and 40s. Meanwhile, expecting 
frontogenesis and low level moisture convergence to produce light 
rain along and south of the I-70 corridor. BUFKIT soundings from 
all guidance members are pretty consistent in showing this cold 
airmass won't be deep enough to produce snow, but rather freezing 
rain initially late Sunday night, then possibly mixed with sleet on 
Monday before ending. Not confident yet in a mix, so have let 
surface temperatures determine precipitation type in the forecast 
and just kept a "rain changing to freezing rain" forecast for this 
forecast cycle. Patchy light freezing rain south of I-44 should end 
Monday by late afternoon or early evening. 


Medium range guidance seems to be in better agreement for Tuesday 
through Thursday this morning. Unfortunately they're in better 
agreement that the flow aloft will be quasi-zonal, which is not good 
for accuracy in the medium range. The general pattern looks like we 
should see slowly moderating temperatures after the big chill on 
Monday and Monday night as the strong high pressure system moves off 
to our east-northeast and the low level flow again turns to the 
south. The European model (ecmwf) still brings a second cold front through the area 
on Wednesday which would keep US cooler than the GFS, but since the 
two models agree to disagree on this point, I stuck close to 
ensemble MOS guidance temperatures through the period. 


Carney 


&& 


Aviation: (for the 12z tafs through 12z Saturday morning) 
issued at 542 am CST Fri Nov 28 2014 


The region will be under the influence of srly flow thru the prd 
as a sfc ridge moves from the mid-MS Vly this morning to off the 
Carolina coast by Sat mrng. A low level jet extends from OK into Iowa this 
mrng and will likely affect kcou and KUIN thru 15z. Otherwise it 
is a VFR fcst until very late in the prd when all model guidance 
indicates low end MVFR stratus should form prior to 12z. 


Specifics for kstl: 


VFR fcst with srly flow til around 9z Sat when low end MVFR 
stratus is expected to dvlp. 


2% 


&& 


Preliminary point temperatures/pops: 
Saint Louis 49 40 58 53 / 0 0 5 5 
Quincy 45 37 52 47 / 0 0 5 5 
Columbia 53 42 61 51 / 0 0 5 5 
Jefferson City 56 43 62 52 / 0 0 5 5 
Salem 44 37 55 54 / 0 0 5 10 
Farmington 48 40 57 54 / 0 0 5 10 


&& 


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.