St Charles County, MO Weather Forecast & Current Conditions

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St Charles County, MO Weather Maps

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St Charles County Weather Map
UTC Time: 9/17/2026, 15:49
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

St Charles County, MO Regional Weather

Expires:202609171600;;605972
ASUS43 KLSX 171510
RWRMO 

WEATHER SUMMARY FOR MISSOURI
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1000 AM CDT THU SEP 17 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
       SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
       CURRENT SKY AND/OR WEATHER CONDITIONS ARE NOT AVAILABLE FOR
       CHILLICOTHE AND FARMINGTON.


MOZ051-052-059>065-171600-
...EAST CENTRAL MISSOURI...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ST LOUIS INTL  PTSUNNY   89  69  51 W13       30.24S HX  93           
SPIRIT OF STL  MOSUNNY   83  71  67 W6        30.22F                  
ST CHARLES     SUNNY     85  69  58 W9        30.22S                  
                   
$$

SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

St Charles County, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
95°/ 72° 35°/ 22°
20%
Sun Night
Thunderstorms
68°20°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Saint Louis, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
95°/ 72° 35°/ 22°
20%
Sun Night
Thunderstorms
68°20°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Greene, IL

Today
Thunderstorms
95°/ 70° 35°/ 21°
20%
Friday
Thunderstorms
92°/ 72° 33°/ 22°
20%
Saturday
Sunny
95°/ 70° 35°/ 21°
20%
Sunday
Thunderstorms
88°/ 65° 31°/ 18°
50%
Monday
Thunderstorms
82°/ 60° 28°/ 16°
60%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 105 this afternoon.

Night: Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Humid with lows around 70. West winds around 5 mph, becoming northeast after midnight. Chance of rain 20 percent. Heat index values up to 101 early in the evening.

Saint Louis City, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
95°/ 72° 35°/ 22°
20%
Sun Night
Thunderstorms
68°20°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Montgomery, MO

Today
Thunderstorms
95°/ 70° 35°/ 21°
20%
Friday
Sunny
92°/ 72° 33°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
20%
Sunday
Thunderstorms
88°/ 65° 31°/ 18°
50%
Monday
Thunderstorms
78°/ 60° 26°/ 16°
60%
Tuesday
Rain Showers
75°/ 58° 24°/ 14°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 106 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows around 70. Southwest winds around 5 mph, becoming north around 5 mph after midnight. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Franklin, MO

Today
Thunderstorms
95°/ 72° 35°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
0%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
50%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
60%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Monroe, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
98°/ 72° 37°/ 22°
0%
Sunday
Rain Showers
92°/ 68° 33°/ 20°
20%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. West winds around 5 mph. Chance of rain 30 percent. Heat index values up to 109 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Madison, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
95°/ 72° 35°/ 22°
20%
Sun Night
Thunderstorms
68°20°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Saint Clair, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
95°/ 72° 35°/ 22°
20%
Sun Night
Thunderstorms
68°20°
40%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Warren, MO

Today
Thunderstorms
95°/ 70° 35°/ 21°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
20%
Sun Night
Thunderstorms
65°18°
50%
Monday
Thunderstorms
82°/ 62° 28°/ 17°
50%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 107 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows around 70. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Monroe, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
98°/ 72° 37°/ 22°
0%
Sunday
Rain Showers
92°/ 68° 33°/ 20°
20%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 60° 27°/ 16°
20%

Day: Sunny. A chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. West winds around 5 mph. Chance of rain 30 percent. Heat index values up to 109 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Adams, MO

Today
Sunny
92°/ 70° 33°/ 21°
0%
Friday
Thunderstorms
88°/ 72° 31°/ 22°
20%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
60%
Sunday
Thunderstorms
82°/ 62° 28°/ 17°
70%
Monday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Tuesday
Rain Showers
72°/ 58° 22°/ 14°
20%

Day: Sunny. Highs in the lower 90s. West winds 5 to 10 mph. Heat index values up to 103 this afternoon.

Night: Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Humid with lows around 70. Northeast winds around 5 mph. Heat index values up to 100 early in the evening.

Washington, MO

Today
Thunderstorms
95°/ 72° 35°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
0%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
50%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
60%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Clinton, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
Friday
Rain Showers
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
98°/ 72° 37°/ 22°
0%
Sun-Sun Night
Rain Showers
92°33°
20%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
50%
Tuesday
Rain Showers
82°/ 62° 28°/ 17°
20%
Wednesday
Rain Showers
82°28°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming northwest after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Randolph, IL

Today
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 70° 37°/ 21°
0%
Sun Night
Cloudy
70°21°
0%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
50%
Tuesday
Rain Showers
82°/ 62° 28°/ 17°
30%
Wednesday
Rain Showers
82°28°
20%

Day: Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 107 this afternoon.

Night: Mostly clear. Lows in the lower 70s. Southwest winds around 5 mph. Heat index values up to 102 early in the evening.

Gasconade, MO

Today
Thunderstorms
95°/ 72° 35°/ 22°
20%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
0%
Sunday
Thunderstorms
92°/ 68° 33°/ 20°
50%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
60%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106 this afternoon.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Saint Francois, MO

Today
Sunny
95°/ 72° 35°/ 22°
0%
Friday
Sunny
95°/ 70° 35°/ 21°
0%
Saturday
Sunny
95°/ 70° 35°/ 21°
0%
Sun-Sun Night
Cloudy
95°35°
0%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
50%
Tuesday
Rain Showers
82°/ 60° 28°/ 16°
20%

Day: Sunny, hot with highs in the mid 90s. West winds around 5 mph. Heat index values up to 105 this afternoon.

Night: Mostly clear. Lows in the lower 70s. Southeast winds around 5 mph, becoming southwest after midnight. Heat index values up to 100 early in the evening.

Bond, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
30%
Friday
Thunderstorms
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
95°/ 68° 35°/ 20°
20%
Sun Night
Thunderstorms
68°20°
20%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
80°/ 58° 27°/ 14°
20%

Day: Sunny. A chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 106.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming northeast around 5 mph after midnight. Chance of rain 20 percent. Heat index values up to 102 early in the evening.

Sainte Genevieve, MO

Today
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Saturday
Sunny
98°/ 70° 37°/ 21°
0%
Sun Night
Cloudy
70°21°
0%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
50%
Tuesday
Rain Showers
82°/ 62° 28°/ 17°
30%
Wednesday
Rain Showers
82°28°
20%

Day: Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 107 this afternoon.

Night: Mostly clear. Lows in the lower 70s. Southwest winds around 5 mph. Heat index values up to 102 early in the evening.

Washington, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
Friday
Rain Showers
95°/ 72° 35°/ 22°
20%
Saturday
Sunny
98°/ 72° 37°/ 22°
0%
Sun-Sun Night
Rain Showers
92°33°
20%
Monday
Thunderstorms
88°/ 62° 31°/ 17°
50%
Tuesday
Rain Showers
82°/ 62° 28°/ 17°
20%
Wednesday
Rain Showers
82°28°
20%

Day: Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming northwest after midnight. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Names listed above may include county names.

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