Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 51°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 96%
  • Visibility: 1.8 miles
  • Dew Point: 50°
  • Pressure: 30.00 in. 0

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Fog
Fog
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Clear
Clear
57°
68°
75°
79°
70°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 79 °
  • Low: 46 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 79 °
  • Low: 63 °
  • Partly Cloudy
  • Monday
  • Chance of a Thunderstorm
  • High: 81 °
  • Low: 59 °
  • Chance of a Thunderstorm
  • Tuesday
  • Partly Cloudy
  • High: 64 °
  • Low: 41 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 61 °
  • Low: 43 °
  • Partly Cloudy

Forecast for Saint Charles, Missouri

Updated: 4:00 AM CDT on October 25, 2014

  • Saturday

    Partly cloudy. Fog early. High of 79F. Winds from the NW at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 46F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. Fog early. High of 79F. Winds from the SE at 5 to 15 mph.

  • Sunday Night

    Mostly cloudy in the evening, then clear. Low of 63F. Winds from the SSE at 5 to 10 mph.

  • Monday

    Partly cloudy. High of 81F. Winds from the South at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of a thunderstorm and a chance of rain, then a chance of rain after midnight. Low of 59F. Winds from the SW at 10 to 15 mph. Chance of rain 50%.

  • Tuesday

    Mostly cloudy in the morning, then clear. High of 64F. Winds from the WNW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy. Low of 41F. Winds from the WNW at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 61F. Winds from the WNW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 43F. Winds from the South at 5 to 10 mph.

  • Thursday

    Partly cloudy. High of 64F. Winds from the SW at 5 to 10 mph shifting to the WNW in the afternoon.

  • Thursday Night

    Partly cloudy. Low of 45F. Winds from the NNW at 10 to 15 mph.

  • Friday

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

  • Friday Night

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

  • Saturday

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

  • Saturday Night

    Clear. Low of 34F. Winds from the SSW at 5 to 10 mph.

  • Sunday

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

  • Sunday Night

    Clear. Low of 39F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 59F. Winds from the South at 5 to 10 mph.

  • Monday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 39F. Winds less than 5 mph. Chance of rain 20% with rainfall amounts near 0.2 in. possible.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm. High of 59F. Winds from the South at 5 to 10 mph. Chance of rain 40% with rainfall amounts near 0.2 in. possible.

  • Tuesday Night

    Clear. Fog overnight. Low of 39F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Fox Hill, Saint Charles, MO

Updated: 6:53 AM CDT

Temperature: 57.6 °F Dew Point: 57 °F Humidity: 99% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Graphs

Location: Lindenwood, St. Charles, MO

Updated: 6:53 AM CDT

Temperature: 56.5 °F Dew Point: 55 °F Humidity: 96% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 6:54 AM CDT

Temperature: 53.8 °F Dew Point: 53 °F Humidity: 96% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 6:53 AM CDT

Temperature: 56.4 °F Dew Point: 55 °F Humidity: 96% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Graphs

Location: Talbridge, St. Charles, MO

Updated: 6:54 AM CDT

Temperature: 58.5 °F Dew Point: 57 °F Humidity: 96% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Riverwood Place, Florissant, MO

Updated: 6:54 AM CDT

Temperature: 54.6 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 6:54 AM CDT

Temperature: 56.8 °F Dew Point: 57 °F Humidity: 99% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: West Drive, St. Peters, MO

Updated: 6:54 AM CDT

Temperature: 56.4 °F Dew Point: 55 °F Humidity: 94% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 6:44 AM CDT

Temperature: 60.3 °F Dew Point: 51 °F Humidity: 72% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 6:54 AM CDT

Temperature: 55.8 °F Dew Point: 56 °F Humidity: 99% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Graphs

Location: St. Peters, St. Peters, MO

Updated: 6:53 AM CDT

Temperature: 55.4 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: Harvester, St. Charles, MO

Updated: 6:51 AM CDT

Temperature: 58.7 °F Dew Point: 58 °F Humidity: 98% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: Maryland Heights, MO

Updated: 6:52 AM CDT

Temperature: 56.4 °F Dew Point: 55 °F Humidity: 95% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Graphs

Location: Jost Farm, Florissant, MO

Updated: 6:49 AM CDT

Temperature: 56.3 °F Dew Point: 52 °F Humidity: 85% Wind: West at 2.2 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 6:49 AM CDT

Temperature: 56.3 °F Dew Point: 55 °F Humidity: 96% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Graphs

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

Updated: 6:54 AM CDT

Temperature: 58.4 °F Dew Point: 57 °F Humidity: 94% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 6:53 AM CDT

Temperature: 52.9 °F Dew Point: 52 °F Humidity: 95% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 6:54 AM CDT

Temperature: 57.4 °F Dew Point: 57 °F Humidity: 99% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 6:43 AM CDT

Temperature: 54.3 °F Dew Point: 53 °F Humidity: 96% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 6:54 AM CDT

Temperature: 55.6 °F Dew Point: 51 °F Humidity: 85% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 6:39 AM CDT

Temperature: 53.4 °F Dew Point: 53 °F Humidity: 99% Wind: Calm Pressure: 30.00 in Hourly Precipitation: - Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 6:54 AM CDT

Temperature: 56.2 °F Dew Point: 55 °F Humidity: 95% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Ross Ave, St. Louis, MO

Updated: 6:54 AM CDT

Temperature: 57.0 °F Dew Point: 53 °F Humidity: 87% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 6:54 AM CDT

Temperature: 57.9 °F Dew Point: 56 °F Humidity: 92% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 6:54 AM CDT

Temperature: 55.4 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 6:54 AM CDT

Temperature: 55.2 °F Dew Point: 54 °F Humidity: 95% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 6:54 AM CDT

Temperature: 57.1 °F Dew Point: 53 °F Humidity: 85% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 6:49 AM CDT

Temperature: 58.6 °F Dew Point: 57 °F Humidity: 95% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 6:53 AM CDT

Temperature: 56.4 °F Dew Point: 56 °F Humidity: 97% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 6:54 AM CDT

Temperature: 58.0 °F Dew Point: 57 °F Humidity: 98% Wind: Calm Pressure: 30.95 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 aviation 
National Weather Service St Louis MO 
620 am CDT Sat Oct 25 2014 


Short term: (through late this afternoon) 
issued at 308 am CDT Sat Oct 25 2014 


Primary focus this morning will be on fog. Believe fog will continue to 
slowly advect southeastward behind a weak cold front. By mid-morning... 
expect diurnal effects to alleviate concerns for dense fog with remnant 
stratus quickly scattering out and then dissipating by midday. A mostly 
clear sky is forecast for the rest of today with high temperatures 
about 5 degrees warmer than yesterday. 




Gosselin 


Long term: (tonight through friday) 
issued at 308 am CDT Sat Oct 25 2014 




(tonight - Monday night) 


Surface ridge will come across the region tonight with light winds. 
Appears to be more of a River Valley fog setup as strong radiational 
cooling should be the rule. More widespread fog is not expected at this 
time as lower dewpoints seep southwestward from the Great Lakes. 
For mins tonight...leaned a bit toward cooler guidance due to nearly 
ideal radiative conditions...especially across the Eastern Ozarks 
where nwp guidance notoriously has a warm bias. 


High temperatures appear challenging for the day on Sunday. Timing of 
a warm front moving through the region is a bit uncertain with the 
NAM model nearly 6 hr slower than the GFS. Leaned toward the faster 
GFS (and thus warmer) solution due to forecast leeside cyclogenesis... 
building mid/upper level heights...and lack of precipitation/convection 
to retard the northward progression of the warm front. Still looks like 
a decent temp gradient across the area however from southwest to northeast. 
Expect highs reaching the mid 80s for portions of central Missouri to 
low 70s across south-central Illinois. 


One last Summer-like day is in store on Monday ahead of an approaching 
cold front from the northwest. Went above warmest guidance yielding highs 
in the 80s nearly areawide as will range from +15-+19c at 850 hpa. 


Cold frontal timing looks ~3 hrs quicker on tonight's models runs than 
last night. Consequently...timing of highest pops has shifted southeastward 
a bit faster as well through Monday night. 




(Tuesday - friday) 


Cooler...more seasonable weather looks in store for the rest of the work 
week with highs in the 60s through Thursday. Models forecast an impulse 
to come through the mid/upper Mississippi Valley on Thursday with slight 
chances of showers. Models diverge greatly Friday and beyond but does 
appear cooler weather will be ushered in for Halloween and into the 
beginning of next weekend with the potential for a widespread frost/freeze 
looming beyond the valid forecast period. 




Gosselin 


&& 


Aviation: (for the 12z tafs through 12z Sunday morning) 
issued at 617 am CDT Sat Oct 25 2014 


Fog will gradually dissipate this morning. Otherwise, a clear sky 
and light northwest winds are expected thru the afternoon. Winds will 
become light and vrb tonight with VFR conditions expected thru the 
remainder of the forecast period. 


Tilly 


&& 


Lsx watches/warnings/advisories: 
MO...dense fog advisory until 9 am CDT this morning for Knox MO-Lewis 
MO-Marion MO-Shelby MO. 


Illinois...dense fog advisory until 9 am CDT this morning for Adams Illinois- 
Brown Illinois. 


&& 


$$ 


Weather forecast office lsx 



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