SAINT LOUIS, MO 63145 Weather Forecast & Current Conditions

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ST. LOUIS, MO
Current Weather

1:51 PM CDT SEP 2, 2026
Clear
99°F
Feels Like: 105°F
Dewpoint: 68°F
Rel. Hum.: 37%
Visibility: 10 miles
Wind: W at 10 mph
Pressure: 30.00 inches
Last 72 hours

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SAINT LOUIS, MO 63145
Weather Forecast

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THIS AFTERNOON
Sunny, hot. Near steady temperature in the upper 90s. Southwest winds 5 to 10 mph.
TONIGHT
Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 104 early in the evening.
THURSDAY
Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 105.
THURSDAY NIGHT
Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 104 early in the evening.
FRIDAY
Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 105.
FRIDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 100 early in the evening.
SATURDAY
Mostly sunny with a slight chance of showers and thunderstorms. Hot with highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105.
SATURDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the mid 70s. Heat index values up to 100 early in the evening.
SUNDAY
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105.
SUNDAY NIGHT AND LABOR DAY
Mostly clear. Lows in the lower 70s. Highs in the lower 90s.
MONDAY NIGHT AND TUESDAY
Partly cloudy. Hot. Lows in the lower 70s. Highs in the mid 90s.

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 AM CDT  9/ 2/2026
Wednesday
2 SEP 2026
SAINT LOUIS, MO 63145 weather forecast Day 1, 12 hours 1 PM 95° 100° Clear 1%

0% Thunder
( 17% severe)
WSW   9 42% 68°
High 98° SAINT LOUIS, MO 63145 weather forecast Day 1, 15 hours 4 PM 97° 102° Clear SW   8 38% 67°
Clear



SAINT LOUIS, MO 63145 weather forecast Day 1, 18 hours 7 PM 94° 98° Clear 0%

0% Thunder
( 10% severe)
S   8 41% 67°
SAINT LOUIS, MO 63145 weather forecast Day 1, 21 hours 10 PM 88° 93° Clear S   8 54% 69°
Thursday
3 SEP 2026
SAINT LOUIS, MO 63145 weather forecast Day 2, 0 hours 1 AM 85° 89° Clear 1%

0% Thunder
( 4% severe)
SSW   8 59% 69°
Low 81° SAINT LOUIS, MO 63145 weather forecast Day 2, 3 hours 4 AM 83° 87° Partly Cloudy SW   8 63% 69°
High 97° SAINT LOUIS, MO 63145 weather forecast Day 2, 6 hours 7 AM 81° 84° Clear 1%

0% Thunder
( 3% severe)
SW   7 67% 69°

Partly Cloudy



SAINT LOUIS, MO 63145 weather forecast Day 2, 9 hours 10 AM 89° 94° Clear WSW   9 54% 70°
SAINT LOUIS, MO 63145 weather forecast Day 2, 12 hours 1 PM 95° 101° Partly Cloudy 3%

0% Thunder
( 11% severe)
SW   9 43% 69°
SAINT LOUIS, MO 63145 weather forecast Day 2, 15 hours 4 PM 97° 102° Partly Cloudy SW   8 39% 68°
SAINT LOUIS, MO 63145 weather forecast Day 2, 18 hours 7 PM 94° 98° Partly Cloudy 0%

0% Thunder
( 8% severe)
S   8 41% 67°
SAINT LOUIS, MO 63145 weather forecast Day 2, 21 hours 10 PM 88° 93° Clear S   8 54% 69°
Friday
4 SEP 2026
SAINT LOUIS, MO 63145 weather forecast Day 3, 0 hours 1 AM 86° 90° Partly Cloudy 0%

0% Thunder
( 5% severe)
S   8 57% 69°
Low 81° SAINT LOUIS, MO 63145 weather forecast Day 3, 3 hours 4 AM 84° 88° Clear SSW   7 63% 70°
High 97° SAINT LOUIS, MO 63145 weather forecast Day 3, 6 hours 7 AM 81° 84° Clear 1%

0% Thunder
( 4% severe)
SW   6 67% 69°

Clear



SAINT LOUIS, MO 63145 weather forecast Day 3, 9 hours 10 AM 89° 94° Clear WSW   7 54% 70°
SAINT LOUIS, MO 63145 weather forecast Day 3, 15 hours 1 PM 95° 101° Partly Cloudy 2%

0% Thunder
( 12% severe)
SW   7 43% 69°
SAINT LOUIS, MO 63145 weather forecast Day 3, 18 hours 4 PM 97° 102° Clear SSW   6 39% 68°
SAINT LOUIS, MO 63145 weather forecast Day 3, 21 hours 7 PM 94° 99° Partly Cloudy     SSW   6 43% 68°

ST. LOUIS, MO extended weather forecast

Saturday
5 SEP 2026
Sunday
6 SEP 2026
Monday
7 SEP 2026
Tuesday
8 SEP 2026
Wednesday
9 SEP 2026
Low 77° Low 73° Low 74° Low 76° Low 74°
High 99° High 94° High 94° High 99° High 92°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
28% Rain
Partly Cloudy
23% Rain
Partly Cloudy
12% Rain
Clear
14% Rain
Partly Cloudy
22% Rain
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