Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 61°
  • Overcast
  • Wind: NE 4 mph
  • Humidity: 87%
  • Visibility: 9.0 miles
  • Dew Point: 57°
  • Pressure: 29.99 in. +

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Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Overcast
Overcast
61°
57°
59°
57°
63°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Partly Cloudy
  • High: 73 °
  • Low: 54 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 77 °
  • Low: 61 °
  • Partly Cloudy
  • Saturday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 64 °
  • Chance of T-Storms
  • Sunday
  • Partly Cloudy
  • High: 79 °
  • Low: 54 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 70 °
  • Low: 50 °
  • Partly Cloudy

Forecast for Saint Charles, Missouri

Updated: 10:00 PM CDT on September 17, 2014

  • Wednesday

    Overcast with a chance of a thunderstorm and a chance of rain, then a chance of a thunderstorm and rain showers in the afternoon. High of 72F. Winds from the SE at 5 to 10 mph. Chance of rain 50%.

  • Wednesday Night

    Partly cloudy with a chance of rain. Low of 57F. Winds less than 5 mph.

  • Thursday

    Overcast in the morning, then mostly cloudy. High of 73F. Winds from the SE at 5 to 10 mph.

  • Thursday Night

    Clear in the evening, then partly cloudy. Low of 54F. Winds from the South at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 77F. Winds from the SE at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 61F. Winds from the SSE at 5 to 10 mph.

  • Saturday

    Overcast with a chance of a thunderstorm and a chance of rain in the afternoon. High of 82F. Winds from the SSW at 5 to 15 mph. Chance of rain 30%.

  • Saturday Night

    Overcast 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 64F. Winds from the SW at 5 to 15 mph. Chance of rain 30%.

  • Sunday

    Partly cloudy. High of 79F. Winds from the WNW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 54F. Winds from the NNW at 5 to 10 mph.

  • Monday

    Partly cloudy. High of 70F. Winds from the North at 5 to 10 mph.

  • Monday Night

    Partly cloudy. Low of 50F. Winds from the NE at 5 to 10 mph.

  • Tuesday

    Clear. High of 72F. Winds from the East at 5 to 10 mph.

  • Tuesday Night

    Clear. Low of 46F. Winds from the East at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 73F. Winds from the ESE at 5 to 10 mph.

  • Wednesday Night

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

  • Thursday

    Mostly cloudy with a chance of a thunderstorm. High of 72F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Thursday Night

    Mostly cloudy. Fog overnight. Low of 52F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Friday Night

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

  • Saturday

    Clear. High of 75F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Sunday

    Clear. High of 73F. Winds less than 5 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 57F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Fox Hill, Saint Charles, MO

Updated: 9:58 PM CDT

Temperature: 63.0 °F Dew Point: 57 °F Humidity: 82% Wind: Calm Pressure: 29.35 in Hourly Precipitation: 0.00 in Graphs

Location: Lindenwood, St. Charles, MO

Updated: 10:33 PM CDT

Temperature: 60.4 °F Dew Point: 58 °F Humidity: 90% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 10:34 PM CDT

Temperature: 60.7 °F Dew Point: 56 °F Humidity: 83% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 10:34 PM CDT

Temperature: 60.5 °F Dew Point: 57 °F Humidity: 89% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 10:34 PM CDT

Temperature: 60.2 °F Dew Point: 58 °F Humidity: 92% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Talbridge, St. Charles, MO

Updated: 10:34 PM CDT

Temperature: 61.2 °F Dew Point: 57 °F Humidity: 85% Wind: NNE at 3.1 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Graphs

Location: Riverwood Place, Florissant, MO

Updated: 10:34 PM CDT

Temperature: 61.0 °F Dew Point: 58 °F Humidity: 89% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Earth City, Earth City, MO

Updated: 11:27 PM EDT

Temperature: 61.8 °F Dew Point: 56 °F Humidity: 82% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Graphs

Location: West Drive, St. Peters, MO

Updated: 10:34 PM CDT

Temperature: 60.3 °F Dew Point: 57 °F Humidity: 86% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 10:30 PM CDT

Temperature: 62.0 °F Dew Point: 51 °F Humidity: 67% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 10:34 PM CDT

Temperature: 61.7 °F Dew Point: 60 °F Humidity: 94% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Graphs

Location: St. Peters, St. Peters, MO

Updated: 10:34 PM CDT

Temperature: 60.6 °F Dew Point: 57 °F Humidity: 87% Wind: SSE at 2.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 10:31 PM CDT

Temperature: 61.9 °F Dew Point: 58 °F Humidity: 87% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: Harvester, St. Charles, MO

Updated: 10:29 PM CDT

Temperature: 61.4 °F Dew Point: 58 °F Humidity: 88% Wind: ENE at 1.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: Maryland Heights, MO

Updated: 10:32 PM CDT

Temperature: 61.9 °F Dew Point: 57 °F Humidity: 84% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Graphs

Location: Jost Farm, Florissant, MO

Updated: 10:30 PM CDT

Temperature: 59.9 °F Dew Point: 52 °F Humidity: 75% Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Graphs

Location: Creve Coeur Park - Forest ReLeaf, St. Louis, MO

Updated: 10:32 PM CDT

Temperature: 61.7 °F Dew Point: 57 °F Humidity: 86% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 10:34 PM CDT

Temperature: 61.2 °F Dew Point: 56 °F Humidity: 84% Wind: Calm Pressure: 29.91 in Hourly Precipitation: - Graphs

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

Updated: 10:34 PM CDT

Temperature: 60.5 °F Dew Point: 56 °F Humidity: 86% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 10:34 PM CDT

Temperature: 61.5 °F Dew Point: 58 °F Humidity: 88% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.00 in Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 10:34 PM CDT

Temperature: 60.8 °F Dew Point: 57 °F Humidity: 88% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Maryland Heights, St Louis, MO

Updated: 10:32 PM CDT

Temperature: 61.6 °F Dew Point: 56 °F Humidity: 83% Wind: Calm Pressure: 29.33 in Hourly Precipitation: 0.00 in Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 10:26 PM CDT

Temperature: 60.8 °F Dew Point: 58 °F Humidity: 90% Wind: Calm Pressure: 29.89 in Hourly Precipitation: - Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 10:34 PM CDT

Temperature: 60.8 °F Dew Point: 56 °F Humidity: 83% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 10:34 PM CDT

Temperature: 61.6 °F Dew Point: 58 °F Humidity: 88% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Ross Ave, St. Louis, MO

Updated: 10:34 PM CDT

Temperature: 62.2 °F Dew Point: 56 °F Humidity: 81% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 10:34 PM CDT

Temperature: 61.7 °F Dew Point: 61 °F Humidity: 97% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 10:34 PM CDT

Temperature: 61.6 °F Dew Point: 58 °F Humidity: 88% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 10:09 PM CDT

Temperature: 62.1 °F Dew Point: 58 °F Humidity: 87% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 10:34 PM CDT

Temperature: 61.6 °F Dew Point: 55 °F Humidity: 80% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 10:29 PM CDT

Temperature: 60.5 °F Dew Point: 57 °F Humidity: 88% Wind: ENE at 1.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 10:34 PM CDT

Temperature: 60.2 °F Dew Point: 57 °F Humidity: 90% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 10:34 PM CDT

Temperature: 59.0 °F Dew Point: 57 °F Humidity: 92% Wind: ENE at 1.0 mph Pressure: 30.22 in Hourly Precipitation: 0.00 in Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 10:34 PM CDT

Temperature: 60.8 °F Dew Point: 59 °F Humidity: 93% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 10:30 PM CDT

Temperature: 60.4 °F Dew Point: 58 °F Humidity: 92% Wind: NNE at 3.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 10:21 PM CDT

Temperature: 60.8 °F Dew Point: 58 °F Humidity: 89% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 10:27 PM CDT

Temperature: 60.5 °F Dew Point: 56 °F Humidity: 84% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service St Louis MO 
707 PM CDT Wed Sep 17 2014 


Update: 
issued at 659 PM CDT Wed Sep 17 2014 


Noticed some light returns on radar which looked a lot like 
drizzle. Sure enough, light drizzle is now occurring here in Weldon 
Spring. Looking at NAM x-sections and rap soundings, seeing a 
fairly deep layer of low level moisture between the surface and 
about 800mb coincident with weak lift centered around 850mb. 
This lift continues though at least 03z, ending between 04z-06z. 
Have therefore gone ahead and added patchy drizzle to the forecast 
for this evening for most areas east of Columbia and south of 
Bowling Green MO/Pittsfield Illinois. 


Carney 


&& 


Short term: (through late tonight) 
issued at 311 PM CDT Wed Sep 17 2014 


Old peripheral upper level energy from the mesoscale convective system that is now pushing 
into northern Arkansas will continue to generate isolated-scattered 
showers into the early evening before it either weakens too much to 
generate anything or it exits our area to the east. 


Otherwise, a warm frontal boundary over southeast Kansas and extreme 
southwest MO, which has been nearly stationary due to the mesoscale convective system rain, 
will try to move northeast later tonight and should generate a new 
round of rain showers/thunderstorms and rain over areas mainly to the south and west of stl 
Metro. Thunder chances up our way look meager enough to leave out 
for now. 


Clouds are starting to break in southwest Illinois now and this trend 
should continue and even quicken as the upper level energy 
generating the showers there comes to an end or exits. This will 
leave the leftover low cloud mainly to the west of the MS river and 
the light easterly flow will begin to erode the eastern edge of 
this, albeit slowly, this evening. By late tonight, though, a 
favorable fog/stratus setup along the periphery of the surviving low 
cloud in central-southeast MO may actually allow the leftovers to 
grow a bit back to the east again. 


Went with a more aggressive cooling on the Illinois side of the river 
tonight due to expected clearing, while preferred the warmer MOS in 
central MO. In-between, tended to favor the cooler MOS guidance as 
well. 


Tes 


Long term: (thursday through next wednesday) 
issued at 311 PM CDT Wed Sep 17 2014 


Surface ridge to continue building in on Thursday. Could see some 
lingering light showers over far southern portions of forecast area 
in the morning. Otherwise, clouds to clear out from northeast to 
southwest with highs in the low 70s. Lows Thursday night will be in 
the 50s. 


By Friday, surface ridge moves off to the east allowing warmer 
southerly flow to return to the region. However, next weather system 
to move in on Saturday with showers and thunderstorms possible and 
persist through Saturday night before tapering off on Sunday. Highs 
on Friday will be in the mid to upper 70s, in the low to mid 80s on 
Saturday, then begin to cool back down on Sunday as next ridge of 
high pressure builds in. 


Cooler weather to persist through the middle of next week with highs 
in the 70s and lows in the 40s and 50s. 


Byrd 


&& 


Aviation: (for the 00z tafs through 00z Thursday evening) 
issued at 634 PM CDT Wed Sep 17 2014 


A large area of stratus currently covers much of the region from 
central Illinois through the St. Louis and Columbia areas into western 
MO. Within this stratus, the cig heights are quite variable 
ranging from low-end VFR in the eastern portion over Illinois to a mix 
of MVFR and IFR in central MO. The low level flow within the 
lowest 4000 ft veers significantly with east-southeast winds in 
the lowest 1000 ft and westerly winds at 4000 ft. This makes the 
forecast of cigs heights challenging. The St. Louis area could see 
cig heights range from high-end MVFR to low-end VFR much of the 
night, but late overnight the easterly flow deepens suggesting an 
improving trend with some fog development. Conditions at kcou 
could vary some as well this evening from IFR to low-end MVFR, 
however I think the general trend overnight will be for IFR 
conditions and fog. All terminals should see improvement mid-late 
Thursday morning. 




Specifics for kstl: 


Cig heights may range from high-end MVFR to low-end VFR much of 
the night but after 09z or so, easterly flow deepens suggesting 
an improving trend with some fog development. VFR conditions should 
previal by 14-15z and persist through the day on Thursday. 


Glass 


&& 


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


$$ 


Weather forecast office lsx 












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