SAINT CHARLES, MO 63303 Weather Forecast & Current Conditions
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  63303 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

ST. LOUIS, MO
Current Weather
10:51 AM CDT JUL 16, 2025
Few Clouds
90°F
Feels Like: 101°F
Dewpoint: 75°F
Rel. Hum.: 62%
Visibility: 10 miles
Wind: WSW at 13 mph, gusts to 17
Pressure: 29.93 inches
Last 72 hours

Local Area Snow Depth

Missouri Current Weather

Missouri MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  63303 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

SAINT CHARLES, MO 63303
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
REST OF TODAY
Sunny. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms this afternoon. Highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 106.
TONIGHT
Partly cloudy with a slight chance of showers and thunderstorms. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 102 early in the evening.
THURSDAY
Partly sunny. Showers and thunderstorms likely in the afternoon. Humid with highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 60 percent.
THURSDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. North winds around 5 mph. Chance of rain 50 percent.
FRIDAY
Mostly cloudy with a chance of showers and thunderstorms. Humid with highs in the mid 80s. East winds around 5 mph. Chance of rain 50 percent.
FRIDAY NIGHT
Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
SATURDAY
Partly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 40 percent. Heat index values up to 100.
SATURDAY NIGHT AND SUNDAY
Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 40 percent. Heat index values up to 105.
SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 40 percent. Heat index values up to 100 early in the evening.
MONDAY
Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 100.
MONDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening.
TUESDAY
Sunny, hot with highs in the mid 90s. Heat index values up to 105.

  63303 WEATHER SATELLITE LOOPS
Visible Weather Satellite
SAINT CHARLES, MO 63303
Infrared Weather Satellite
SAINT CHARLES, MO 63303
  63303 WEATHER RADAR LOOP
NEXRAD Weather Radar
SAINT CHARLES, MO 63303
 MOS COMPUTER WEATHER FORECAST

ST. LOUIS, MO 3 hourly weather forecast
weather forecast created  7:00 PM CDT  7/15/2025
Wednesday
16 JUL 2025		 SAINT CHARLES, MO 63303 weather forecast Day 1, 0 hours 1 AM 77° 78° Partly Cloudy 5%

 0% Thunder
( 11% severe)		 S   3 85% 72°
Low 74° SAINT CHARLES, MO 63303 weather forecast Day 1, 3 hours 4 AM 75° 75° Partly Cloudy SW   5 90% 72°
High 94° SAINT CHARLES, MO 63303 weather forecast Day 1, 6 hours 7 AM 76° 76° Partly Cloudy 4%

 0% Thunder
( 16% severe)		 SW   5 87% 72°

Partly Cloudy



 SAINT CHARLES, MO 63303 weather forecast Day 1, 9 hours 10 AM 85° 93° Partly Cloudy SW   7 70% 74°
SAINT CHARLES, MO 63303 weather forecast Day 1, 12 hours 1 PM 91° 100° Partly Cloudy 10%
RAIN
<.01 in		 0% Thunder
( 28% severe)		 WSW   9 56% 73°
SAINT CHARLES, MO 63303 weather forecast Day 1, 15 hours 4 PM 91° 98° Partly Cloudy WSW   9 52% 71°
SAINT CHARLES, MO 63303 weather forecast Day 1, 18 hours 7 PM 89° 95° Partly Cloudy 14%
RAIN
.5–1 in		 0% Thunder
( 32% severe)		 SW   9 56% 71°
SAINT CHARLES, MO 63303 weather forecast Day 1, 21 hours 10 PM 84° 90° Partly Cloudy SSW   8 67% 72°
Thursday
17 JUL 2025		 SAINT CHARLES, MO 63303 weather forecast Day 2, 0 hours 1 AM 81° 85° Partly Cloudy 16%
RAIN
<.01 in		 0% Thunder
( 26% severe)		 SW   8 74% 72°
Low 76° SAINT CHARLES, MO 63303 weather forecast Day 2, 3 hours 4 AM 79° 82° Mostly Cloudy WSW   8 79% 72°
High 88° SAINT CHARLES, MO 63303 weather forecast Day 2, 6 hours 7 AM 78° 80° Mostly Cloudy 9%

 0% Thunder
( 23% severe)		 WNW   8 82% 72°

Mostly Cloudy

Chance of Rain

 SAINT CHARLES, MO 63303 weather forecast Day 2, 9 hours 10 AM 82° 87° Mostly Cloudy NW   9 72% 72°
SAINT CHARLES, MO 63303 weather forecast Day 2, 12 hours 1 PM 85° 91° Mostly Cloudy 48%
RAIN
***		 0% Thunder
( 45% severe)		 NW   9 65% 72°
SAINT CHARLES, MO 63303 weather forecast Day 2, 15 hours 4 PM 84° 90° Mostly Cloudy NNW   8 67% 72°
SAINT CHARLES, MO 63303 weather forecast Day 2, 18 hours 7 PM 81° 85° Mostly Cloudy 29%
RAIN
***		 0% Thunder
( 38% severe)		 N   7 74% 72°
SAINT CHARLES, MO 63303 weather forecast Day 2, 21 hours 10 PM 77° 78° Mostly Cloudy NE   5 85% 72°

ST. LOUIS, MO extended weather forecast
BAD DAY
BAD DATE		 BAD DAY
BAD DATE		 BAD DAY
BAD DATE		 BAD DAY
BAD DATE		 BAD DAY
BAD DATE
Low 75° Low 70° Low 75° Low 77° Low 78°
High 88° High 85° High 94° High 95° High 92°
SAINT CHARLES, MO 63303 weather forecast Day 3 SAINT CHARLES, MO 63303 weather forecast Day 4 SAINT CHARLES, MO 63303 weather forecast Day 5 SAINT CHARLES, MO 63303 weather forecast Day 6 SAINT CHARLES, MO 63303 weather forecast Day 7
Mostly Cloudy
65% Rain		 Overcast
54% Rain		 Overcast
55% Rain		 Partly Cloudy
36% Rain		 Partly Cloudy
33% Rain
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