St Charles, MO Weather Forecast & Current Conditions

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St Charles, MO Weather Maps

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St Charles Weather Map
UTC Time: 9/17/2026, 12:39
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

St Charles, MO Regional Weather

Expires:202609171300;;600139
ASUS43 KLSX 171210
RWRMO 

WEATHER SUMMARY FOR MISSOURI
NATIONAL WEATHER SERVICE SPRINGFIELD MO
700 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>065-171300-
...EAST CENTRAL MISSOURI...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ST LOUIS INTL  PTCLDY    79  69  71 SW7       30.22R                  
6HR MIN TEMP:  78; 6HR MAX TEMP:  80;                                

SPIRIT OF STL  CLEAR     72  70  93 W3        30.20R                  
6HR MIN TEMP:  71; 6HR MAX TEMP:  74;                                

ST CHARLES     CLEAR     71  70  96 CALM      30.20R                  
6HR MIN TEMP:  71; 6HR MAX TEMP:  74;                                

                   
$$

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, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
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 this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Heat index values up to 103 early in the evening.

Saint Louis, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
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 this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. 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. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west this afternoon. Chance of rain 20 percent. Heat index values up to 105.

Night: Mostly clear in the evening, then becoming partly cloudy. Humid with lows around 70. West winds around 5 mph, becoming northeast after midnight. Heat index values up to 101 early in the evening.

Saint Louis City, MO

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
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 this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Heat index values up to 103 early in the evening.

Montgomery, MO

Today
Sunny
95°/ 70° 35°/ 21°
0%
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, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

Night: Mostly clear. Humid with lows around 70. Southwest winds around 5 mph, becoming north around 5 mph after midnight. Heat index values up to 102 early in the evening.

Madison, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
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 this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Heat index values up to 103 early in the evening.

Franklin, MO

Today
Sunny
95°/ 72° 35°/ 22°
0%
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, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

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

Monroe, MO

Today
Sunny
98°/ 72° 37°/ 22°
0%
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, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 109.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph. Heat index values up to 103 early in the evening.

Saint Clair, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
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 this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 this afternoon.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming north after midnight. Heat index values up to 103 early in the evening.

Warren, MO

Today
Sunny
95°/ 70° 35°/ 21°
0%
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, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 107 this afternoon.

Night: Mostly clear. Humid with lows around 70. Southwest winds around 5 mph, becoming north after midnight. Heat index values up to 103 early in the evening.

Monroe, IL

Today
Sunny
98°/ 72° 37°/ 22°
0%
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, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 109.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph. 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. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west this afternoon. Heat index values up to 103.

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
Sunny
95°/ 72° 35°/ 22°
0%
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, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

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

Clinton, IL

Today
Sunny
98°/ 72° 37°/ 22°
0%
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, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

Night: Mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming northwest after midnight. 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.

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

Bond, IL

Today
Thunderstorms
98°/ 72° 37°/ 22°
20%
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 slight chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 106.

Night: Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming northeast around 5 mph after midnight. Heat index values up to 102 early in the evening.

Gasconade, MO

Today
Sunny
95°/ 72° 35°/ 22°
0%
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, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

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

Montgomery, IL

Today
Thunderstorms
95°/ 72° 35°/ 22°
20%
Friday
Thunderstorms
92°/ 70° 33°/ 21°
40%
Saturday
Sunny
95°/ 72° 35°/ 22°
20%
Sun Night
Thunderstorms
65°18°
20%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
20%
Wednesday
Rain Showers
82°28°
20%

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

Night: Partly cloudy. Lows in the lower 70s. West winds around 5 mph, becoming northeast around 5 mph after midnight. Heat index values up to 101 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. Southwest winds 5 to 10 mph. Heat index values up to 105.

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.

Winchester, IL

Today
Sunny
95°/ 70° 35°/ 21°
0%
Friday
Thunderstorms
92°/ 72° 33°/ 22°
40%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
40%
Sunday
Thunderstorms
85°/ 65° 29°/ 18°
60%
Monday
Rain Showers
78°/ 58° 26°/ 14°
60%
Tuesday
Cloudy
75°24°
0%
Wednesday
Cloudy
75°24°
0%

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

Night: Mostly clear in the evening, then becoming partly cloudy. Humid with lows around 70. Northeast winds around 5 mph.

Names listed above may include county names.

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