Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 73°
  • Clear
  • Wind: East 4 mph
  • Humidity: 93%
  • Visibility: 5.0 miles
  • Dew Point: 71°
  • Pressure: 30.04 in. +

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Chance of a Thunderstorm
Chance of T-storms
Partly Cloudy
Partly Cloudy
Thunderstorm
T-storms
Thunderstorm
T-storms
Chance of a Thunderstorm
Chance of T-storms
72°
79°
84°
88°
82°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Thunderstorm
  • High: 88 °
  • Low: 70 °
  • T-Storms
  • Friday
  • Thunderstorm
  • High: 88 °
  • Low: 70 °
  • T-Storms
  • Saturday
  • Thunderstorm
  • High: 84 °
  • Low: 70 °
  • T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 84 °
  • Low: 72 °
  • Chance of T-Storms
  • Monday
  • Chance of a Thunderstorm
  • High: 84 °
  • Low: 68 °
  • Chance of T-Storms

Forecast for Saint Charles, Missouri

Updated: 10:00 AM CDT on August 28, 2014

  • Thursday

    Partly cloudy with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 88F with a heat index of 95F. Winds from the SE at 5 to 10 mph. Chance of rain 50%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 70F. Winds from the SE at 5 to 10 mph. Chance of rain 30% with rainfall amounts near 0.2 in. possible.

  • Friday

    Clear in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F. Winds from the South at 5 to 15 mph. Chance of rain 30%.

  • Friday Night

    Mostly cloudy with thunderstorms and rain showers. Low of 70F. Winds from the SSW at 5 to 10 mph. Chance of rain 60%.

  • Saturday

    Partly cloudy with thunderstorms and rain showers. High of 84F. Winds from the SW at 10 to 15 mph. Chance of rain 60%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 70F. Winds from the SSW at 5 to 10 mph.

  • Sunday

    Partly cloudy with a chance of a thunderstorm and rain. High of 84F with a heat index of 90F. Winds from the SSW at 5 to 10 mph. Chance of rain 50%.

  • Sunday Night

    Partly cloudy in the evening, then overcast. Low of 72F. Winds from the South at 5 to 15 mph.

  • Monday

    Overcast with a chance of a thunderstorm and rain. High of 84F with a heat index of 90F. Winds from the WSW at 10 to 15 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Monday Night

    Overcast with a chance of a thunderstorm. Low of 68F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 82F. Winds less than 5 mph. Chance of rain 50%.

  • Tuesday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 68F. Winds from the South at 5 to 10 mph. Chance of rain 30%.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm. High of 88F with a heat index of 95F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Clear. Low of 70F. Winds from the South at 5 to 10 mph.

  • Thursday

    Clear. High of 88F. Winds from the SSW at 5 to 10 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 68F. Winds from the SSE at 5 to 10 mph.

  • Friday

    Clear. High of 90F. Winds less than 5 mph.

  • Friday Night

    Clear. Fog overnight. Low of 68F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 90F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 66F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy with a chance of a thunderstorm. High of 88F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday Night

    Clear. Fog overnight. Low of 66F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Lindenwood, St. Charles, MO

Updated: 8:20 AM CDT

Temperature: 72.8 °F Dew Point: 72 °F Humidity: 97% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 8:21 AM CDT

Temperature: 74.4 °F Dew Point: 71 °F Humidity: 90% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 8:20 AM CDT

Temperature: 74.5 °F Dew Point: 73 °F Humidity: 95% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 8:21 AM CDT

Temperature: 75.1 °F Dew Point: 73 °F Humidity: 93% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 8:21 AM CDT

Temperature: 73.7 °F Dew Point: 73 °F Humidity: 98% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Talbridge, St. Charles, MO

Updated: 8:20 AM CDT

Temperature: 75.4 °F Dew Point: 72 °F Humidity: 90% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 7:51 AM CDT

Temperature: 72.7 °F Dew Point: 72 °F Humidity: 99% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Earth City, Earth City, MO

Updated: 9:15 AM EDT

Temperature: 76.5 °F Dew Point: 72 °F Humidity: 85% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 8:21 AM CDT

Temperature: 72.6 °F Dew Point: 72 °F Humidity: 95% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 8:17 AM CDT

Temperature: 74.3 °F Dew Point: 67 °F Humidity: 78% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 8:21 AM CDT

Temperature: 73.6 °F Dew Point: 72 °F Humidity: 96% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 8:21 AM CDT

Temperature: 77.9 °F Dew Point: 75 °F Humidity: 91% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 8:08 AM CDT

Temperature: 75.2 °F Dew Point: 74 °F Humidity: 95% Wind: SSE at 2.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

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

Updated: 8:11 AM CDT

Temperature: 76.5 °F Dew Point: 73 °F Humidity: 88% Wind: Calm Pressure: 29.55 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 8:17 AM CDT

Temperature: 74.7 °F Dew Point: 72 °F Humidity: 90% Wind: SSW at 1.1 mph Pressure: 29.97 in Hourly Precipitation: - Heat Index: 74 °F Graphs

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

Updated: 8:21 AM CDT

Temperature: 71.9 °F Dew Point: 71 °F Humidity: 98% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 8:20 AM CDT

Temperature: 73.0 °F Dew Point: 73 °F Humidity: 100% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 8:20 AM CDT

Temperature: 74.8 °F Dew Point: 72 °F Humidity: 90% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 8:11 AM CDT

Temperature: 73.6 °F Dew Point: 71 °F Humidity: 91% Wind: SSE at 1.7 mph Pressure: 29.95 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 8:20 AM CDT

Temperature: 74.5 °F Dew Point: 73 °F Humidity: 94% Wind: SE at 1.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 8:21 AM CDT

Temperature: 72.5 °F Dew Point: 70 °F Humidity: 91% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:21 AM CDT

Temperature: 74.3 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 8:20 AM CDT

Temperature: 73.2 °F Dew Point: 72 °F Humidity: 95% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 8:20 AM CDT

Temperature: 75.3 °F Dew Point: 73 °F Humidity: 93% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 8:21 AM CDT

Temperature: 74.0 °F Dew Point: 71 °F Humidity: 90% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 7:35 AM CDT

Temperature: 73.0 °F Dew Point: 72 °F Humidity: 95% Wind: SE at 1.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 8:20 AM CDT

Temperature: 72.8 °F Dew Point: 72 °F Humidity: 99% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:21 AM CDT

Temperature: 73.0 °F Dew Point: 72 °F Humidity: 97% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 8:20 AM CDT

Temperature: 74.7 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 8:20 AM CDT

Temperature: 78.6 °F Dew Point: 75 °F Humidity: 89% Wind: ESE at 6.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Austin Ridge, Saint Charles, MO

Updated: 8:15 AM CDT

Temperature: 72.6 °F Dew Point: 71 °F Humidity: 96% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:11 AM CDT

Temperature: 73.0 °F Dew Point: 69 °F Humidity: 86% Wind: ESE at 2.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 72 °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 
636 am CDT Thu Aug 28 2014 


Short term: (through late this afternoon) 
issued at 334 am CDT Thu Aug 28 2014 


Nocturnal convection has remained well northwest of forecast area 
with just a few very small showers popping up over northeast 
Missouri and west central Illinois early this morning. For today, 
will see a lot of sunshine initially but diurnal cu to pop by mid 
to late morning most locations. So depending on how much cloud 
cover forms and timing of when storms will develop will affect how 
warm temperatures get. For now have highs in the mid 80s far north 
to the upper 80s to low 90s elsewhere. Will still see dewpts in 
the low to mid 70s so another very humid day. Heat indices could 
get close to 100 in the Metro area this afternoon but not warrant 
any headlines. Just like yesterday, expect widely scattered 
thunderstorms to develop along weak boundary that remains draped 
across region. 


Byrd 


Long term: (tonight through wednesday) 
issued at 334 am CDT Thu Aug 28 2014 


Tonight activity to slowly dissipate then refocus back to the 
northwest along main frontal boundary. Lows tonight will be in the 
low 70s. On Friday, upper level shortwave/trof to begin to lift 
northeast out of Central Plains and into forecast area. 
Precipitation chances to be on the increase with the best chances 
Friday night and Saturday. Kept likely pops going through this 
period. Highs on Friday will be a bit lower, in the upper 80s and 
lows Friday night will be in the upper 60s to low 70s. As system 
slides through on Saturday, the combination of clouds and storms 
will keep highs in the low 80s far north to the upper 80s south. 


Frontal boundary to stall out just southeast of forecast area 
Saturday night through Sunday, could see a bit of a break in 
activity with just isolated/scattered storms through this period. 
Then an even stronger trof will slide east through region Sunday 
night and Monday with increasing chances of storms once again. This 
boundary to stall out just south of US as well, so kept mention of 
storms possible through the rest of the forecast period. Highs will 
be in the 80s through the middle of next week. 


Byrd 


&& 


Aviation: (for the 12z tafs through 12z Friday morning) 
issued at 613 am CDT Thu Aug 28 2014 


MVFR fog will burn off this morning with scattered thunderstorms 
expected to develop during the afternoon. Light east/southeast 
wind. 


Specifics for kstl: 
MVFR fog will burn off this morning with scattered thunderstorms 
expected to impact the terminal this afternoon and early this 
evening. Light east/southeast wind will continue. 


Cvking 


&& 


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


$$ 


Weather forecast office lsx 












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