SAINT LOUIS, MO 63145 Weather Forecast & Current Conditions

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ST. LOUIS, MO
Current Weather

2:51 AM CDT SEP 6, 2026
Clear
79°F
Feels Like: 82°F
Dewpoint: 73°F
Rel. Hum.: 82%
Visibility: 10 miles
Wind: NE at 9 mph
Pressure: 29.96 inches
Last 72 hours

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SAINT LOUIS, MO 63145
Weather Forecast

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TODAY
Mostly sunny. Not as warm with highs around 90. Northeast winds 5 to 10 mph.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.
LABOR DAY
Sunny. Highs in the upper 80s. East winds 5 to 10 mph.
MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. East winds around 5 mph.
TUESDAY
Sunny, hot with highs in the mid 90s. South winds around 5 mph.
TUESDAY NIGHT
Mostly clear. Not as cool with lows in the lower 70s.
WEDNESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105 in the afternoon.
WEDNESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows around 70. Chance of rain 70 percent. Heat index values up to 100 early in the evening.
THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. A slight chance of thunderstorms. A chance of showers, mainly in the morning. Not as warm with highs in the mid 80s. Chance of rain 50 percent.
THURSDAY NIGHT
Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent.
FRIDAY
Sunny with a 20 percent chance of showers. Highs in the mid 80s.
FRIDAY NIGHT
Mostly clear with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent.
SATURDAY
Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent.

Visible Weather Satellite
SAINT LOUIS, MO 63145
Infrared Weather Satellite
SAINT LOUIS, MO 63145
NEXRAD Weather Radar
SAINT LOUIS, MO 63145

ST. LOUIS, MO 3 hourly weather forecast

weather forecast created  7:00 PM CDT  9/ 5/2026
Sunday
6 SEP 2026
SAINT LOUIS, MO 63145 weather forecast Day 1, 0 hours 1 AM 83° 89° Partly Cloudy 13%
RAIN
.01–.1 in
0% Thunder
( 11% severe)
ENE   8 72% 73°
Low 74° SAINT LOUIS, MO 63145 weather forecast Day 1, 3 hours 4 AM 79° 82° Partly Cloudy ENE   9 82% 73°
High 91° SAINT LOUIS, MO 63145 weather forecast Day 1, 6 hours 7 AM 75° 75° Partly Cloudy 1%

0% Thunder
( 3% severe)
NE   8 87% 71°

Partly Cloudy



SAINT LOUIS, MO 63145 weather forecast Day 1, 9 hours 10 AM 81° 84° Mostly Cloudy ENE   10 69% 70°
SAINT LOUIS, MO 63145 weather forecast Day 1, 12 hours 1 PM 88° 92° Partly Cloudy 1%

0% Thunder
( 8% severe)
ENE   10 52% 68°
SAINT LOUIS, MO 63145 weather forecast Day 1, 15 hours 4 PM 91° 93° Partly Cloudy ENE   10 42% 65°
SAINT LOUIS, MO 63145 weather forecast Day 1, 18 hours 7 PM 87° 87° Partly Cloudy 0%

0% Thunder
( 3% severe)
ENE   12 43% 62°
SAINT LOUIS, MO 63145 weather forecast Day 1, 21 hours 10 PM 80° 81° Partly Cloudy ENE   12 52% 61°
Monday
7 SEP 2026
SAINT LOUIS, MO 63145 weather forecast Day 2, 0 hours 1 AM 75° 75° Partly Cloudy 1%

0% Thunder
( 1% severe)
E   10 60% 60°
Low 68° SAINT LOUIS, MO 63145 weather forecast Day 2, 3 hours 4 AM 71° 71° Partly Cloudy E   9 71% 61°
High 89° SAINT LOUIS, MO 63145 weather forecast Day 2, 6 hours 7 AM 68° 68° Partly Cloudy 1%

0% Thunder
( 0% severe)
E   8 78% 61°

Partly Cloudy



SAINT LOUIS, MO 63145 weather forecast Day 2, 9 hours 10 AM 77° 79° Partly Cloudy E   9 56% 60°
SAINT LOUIS, MO 63145 weather forecast Day 2, 12 hours 1 PM 85° 84° Partly Cloudy 0%

0% Thunder
( 1% severe)
E   8 40% 58°
SAINT LOUIS, MO 63145 weather forecast Day 2, 15 hours 4 PM 89° 87° Partly Cloudy E   9 32% 55°
SAINT LOUIS, MO 63145 weather forecast Day 2, 18 hours 7 PM 84° 83° Partly Cloudy 0%

0% Thunder
( 1% severe)
E   10 36% 54°
SAINT LOUIS, MO 63145 weather forecast Day 2, 21 hours 10 PM 77° 79° Partly Cloudy E   8 50% 57°

ST. LOUIS, MO extended weather forecast

Tuesday
8 SEP 2026
Wednesday
9 SEP 2026
Thursday
10 SEP 2026
Friday
11 SEP 2026
Saturday
12 SEP 2026
Low 66° Low 77° Low 71° Low 66° Low 70°
High 96° High 95° High 84° High 88° High 92°
SAINT LOUIS, MO 63145 weather forecast Day 3 SAINT LOUIS, MO 63145 weather forecast Day 4 SAINT LOUIS, MO 63145 weather forecast Day 5 SAINT LOUIS, MO 63145 weather forecast Day 6 SAINT LOUIS, MO 63145 weather forecast Day 7
Clear
4% Rain
Mostly Cloudy
38% Rain
Mostly Cloudy
53% Rain
Clear
5% Rain
Partly Cloudy
23% Rain
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