SAINT CHARLES, MO 63303 Weather Forecast & Current Conditions

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ST. LOUIS, MO
Current Weather

10:51 AM CDT MAY 24, 2026
Broken Clouds
70°F
Feels Like: 70°F
Dewpoint: 64°F
Rel. Hum.: 81%
Visibility: 10 miles
Wind: NNW at 3 mph
Pressure: 30.08 inches
Last 72 hours

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SAINT CHARLES, MO 63303
Weather Forecast

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Snow Depth pages
REST OF TODAY
Mostly cloudy late this morning, then becoming mostly sunny. A chance of showers late this morning, then a slight chance of showers this afternoon. Highs in the lower 80s. North winds 5 to 10 mph. Chance of rain 50 percent.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. East winds around 5 mph.
MEMORIAL DAY
Mostly sunny. Highs in the lower 80s. East winds 5 to 10 mph.
MONDAY NIGHT
Partly cloudy. Lows in the lower 60s. East winds 5 to 10 mph.
TUESDAY
Partly sunny with a chance of showers with a slight chance of thunderstorms in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. East winds 5 to 10 mph. Chance of rain 70 percent.
TUESDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 70 percent.
WEDNESDAY
Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then mostly sunny with showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 60 percent.
WEDNESDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 50 percent.
THURSDAY
Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent.
THURSDAY NIGHT AND FRIDAY
Showers likely with a chance of thunderstorms. Lows in the mid 60s. Highs around 80. Chance of rain 70 percent.
FRIDAY NIGHT
Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 50 percent.
SATURDAY
Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.

Visible Weather Satellite
SAINT CHARLES, MO 63303
Infrared Weather Satellite
SAINT CHARLES, MO 63303
NEXRAD Weather Radar
SAINT CHARLES, MO 63303

ST. LOUIS, MO 3 hourly weather forecast

weather forecast created  7:00 PM CDT  5/23/2026
Sunday
24 MAY 2026
SAINT CHARLES, MO 63303 weather forecast Day 1, 0 hours 1 AM 68° 68° Mostly Cloudy 32%
RAIN
.1–.25 in
0% Thunder
( 19% severe)
  CALM 84% 63°
Low 64° SAINT CHARLES, MO 63303 weather forecast Day 1, 3 hours 4 AM 65° 65° Mostly Cloudy   CALM 90% 62°
High 81° SAINT CHARLES, MO 63303 weather forecast Day 1, 6 hours 7 AM 65° 65° Mostly Cloudy 16%
RAIN
<.01 in
0% Thunder
( 12% severe)
  CALM 87% 61°

Partly Cloudy



SAINT CHARLES, MO 63303 weather forecast Day 1, 9 hours 10 AM 72° 72° Partly Cloudy   CALM 71% 62°
SAINT CHARLES, MO 63303 weather forecast Day 1, 12 hours 1 PM 77° 79° Partly Cloudy 4%

0% Thunder
( 14% severe)
N   3 58% 61°
SAINT CHARLES, MO 63303 weather forecast Day 1, 15 hours 4 PM 80° 81° Partly Cloudy NA   6 51% 60°
SAINT CHARLES, MO 63303 weather forecast Day 1, 18 hours 7 PM 79° 80° Partly Cloudy 1%

0% Thunder
( 4% severe)
NNE   6 52% 60°
SAINT CHARLES, MO 63303 weather forecast Day 1, 21 hours 10 PM 71° 71° Partly Cloudy E   3 68% 60°
Monday
25 MAY 2026
SAINT CHARLES, MO 63303 weather forecast Day 2, 0 hours 1 AM 67° 67° Partly Cloudy 2%

0% Thunder
( 1% severe)
  CALM 78% 60°
Low 62° SAINT CHARLES, MO 63303 weather forecast Day 2, 3 hours 4 AM 64° 66° Partly Cloudy   CALM 84% 59°
High 82° SAINT CHARLES, MO 63303 weather forecast Day 2, 6 hours 7 AM 64° 66° Mostly Cloudy 1%

0% Thunder
( 3% severe)
  CALM 87% 60°

Partly Cloudy



SAINT CHARLES, MO 63303 weather forecast Day 2, 9 hours 10 AM 74° 74° Partly Cloudy E   6 69% 63°
SAINT CHARLES, MO 63303 weather forecast Day 2, 12 hours 1 PM 80° 81° Partly Cloudy 3%

0% Thunder
( 7% severe)
E   9 52% 61°
SAINT CHARLES, MO 63303 weather forecast Day 2, 15 hours 4 PM 82° 83° Partly Cloudy E   9 49% 61°
SAINT CHARLES, MO 63303 weather forecast Day 2, 18 hours 7 PM 79° 80° Partly Cloudy 2%

0% Thunder
( 6% severe)
E   9 54% 61°
SAINT CHARLES, MO 63303 weather forecast Day 2, 21 hours 10 PM 73° 73° Partly Cloudy E   7 68% 62°

ST. LOUIS, MO extended weather forecast

Tuesday
26 MAY 2026
Wednesday
27 MAY 2026
Thursday
28 MAY 2026
Friday
29 MAY 2026
Saturday
30 MAY 2026
Low 66° Low 69° Low 69° Low 67° Low 64°
High 85° High 85° High 89° High 81° High 82°
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
20% Rain
Overcast
61% Rain
Partly Cloudy
35% Rain
Overcast
40% Rain
Overcast
32% Rain
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