SAINT LOUIS, MO 63121 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


ST. LOUIS, MO
Current Weather

10:51 AM CDT MAY 29, 2026
Overcast
79°F
Feels Like: 81°F
Dewpoint: 64°F
Rel. Hum.: 60%
Visibility: 10 miles
Wind: ESE at 12 mph
Pressure: 30.01 inches
Last 72 hours

Local Area Snow Depth

Missouri Current Weather

Missouri MOS Forecast Weather


Regional Weather Maps


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

SAINT LOUIS, MO 63121
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Mostly cloudy. Highs in the lower 80s. Southeast winds 5 to 10 mph.
TONIGHT
A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows in the mid 60s. East winds 5 to 10 mph. Chance of rain 20 percent.
SATURDAY
Mostly cloudy in the morning, then becoming partly sunny. A slight chance of showers and thunderstorms. Highs in the lower 80s. East winds 5 to 10 mph. Chance of rain 20 percent.
SATURDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. East winds 5 to 10 mph. Chance of rain 20 percent.
SUNDAY
Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 80s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.
SUNDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 70 percent.
MONDAY
Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.
MONDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 60s. Chance of rain 40 percent.
TUESDAY
Mostly sunny. Highs in the lower 80s.
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT
Mostly clear. Lows around 60. Highs in the lower 80s.
THURSDAY
Mostly sunny. Highs in the mid 80s.

Visible Weather Satellite
SAINT LOUIS, MO 63121
Infrared Weather Satellite
SAINT LOUIS, MO 63121
NEXRAD Weather Radar
SAINT LOUIS, MO 63121

ST. LOUIS, MO 3 hourly weather forecast

weather forecast created  7:00 AM CDT  5/29/2026
Friday
29 MAY 2026
SAINT LOUIS, MO 63121 weather forecast Day 1, 12 hours 1 PM 79° 80° Mostly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 11% severe)
ESE   12 54% 61°
High 81° SAINT LOUIS, MO 63121 weather forecast Day 1, 15 hours 4 PM 80° 81° Mostly Cloudy ESE   12 54% 62°
Mostly Cloudy



SAINT LOUIS, MO 63121 weather forecast Day 1, 18 hours 7 PM 78° 80° Mostly Cloudy 18%
RAIN
<.01 in
0% Thunder
( 17% severe)
ESE   10 56% 61°
SAINT LOUIS, MO 63121 weather forecast Day 1, 21 hours 10 PM 74° 74° Mostly Cloudy ESE   8 69% 63°
Saturday
30 MAY 2026
SAINT LOUIS, MO 63121 weather forecast Day 2, 0 hours 1 AM 71° 71° Mostly Cloudy 23%
RAIN
.01–.1 in
0% Thunder
( 11% severe)
E   5 76% 63°
Low 66° SAINT LOUIS, MO 63121 weather forecast Day 2, 3 hours 4 AM 68° 68° Mostly Cloudy E   5 84% 63°
High 80° SAINT LOUIS, MO 63121 weather forecast Day 2, 6 hours 7 AM 68° 68° Mostly Cloudy 21%
RAIN
.1–.25 in
0% Thunder
( 15% severe)
E   6 81% 62°

Mostly Cloudy

Chance of Rain

SAINT LOUIS, MO 63121 weather forecast Day 2, 9 hours 10 AM 72° 72° Mostly Cloudy E   8 73% 63°
SAINT LOUIS, MO 63121 weather forecast Day 2, 12 hours 1 PM 77° 79° Mostly Cloudy 20%
RAIN
.25–.5 in
0% Thunder
( 28% severe)
E   10 62% 63°
SAINT LOUIS, MO 63121 weather forecast Day 2, 15 hours 4 PM 79° 81° Partly Cloudy E   12 58% 63°
SAINT LOUIS, MO 63121 weather forecast Day 2, 18 hours 7 PM 78° 80° Partly Cloudy 9%

0% Thunder
( 14% severe)
E   12 56% 61°
SAINT LOUIS, MO 63121 weather forecast Day 2, 21 hours 10 PM 73° 73° Mostly Cloudy E   10 64% 60°
Sunday
31 MAY 2026
SAINT LOUIS, MO 63121 weather forecast Day 3, 0 hours 1 AM 70° 70° Mostly Cloudy 29%
RAIN
<.01 in
0% Thunder
( 17% severe)
E   10 68% 59°
Low 64° SAINT LOUIS, MO 63121 weather forecast Day 3, 3 hours 4 AM 66° 66° Mostly Cloudy ESE   10 75% 58°
High 82° SAINT LOUIS, MO 63121 weather forecast Day 3, 6 hours 7 AM 65° 65° Mostly Cloudy 22%
RAIN
<.01 in
0% Thunder
( 17% severe)
ESE   10 75% 57°

Mostly Cloudy

Chance of Rain

SAINT LOUIS, MO 63121 weather forecast Day 3, 9 hours 10 AM 70° 70° Mostly Cloudy ESE   9 63% 57°
SAINT LOUIS, MO 63121 weather forecast Day 3, 15 hours 1 PM 77° 79° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 29% severe)
SE   9 58% 61°
SAINT LOUIS, MO 63121 weather forecast Day 3, 18 hours 4 PM 82° 83° Partly Cloudy SE   8 53% 63°
SAINT LOUIS, MO 63121 weather forecast Day 3, 21 hours 7 PM 81° 82° Partly Cloudy     SE   10 54% 63°

ST. LOUIS, MO extended weather forecast

Monday
1 JUN 2026
Tuesday
2 JUN 2026
Wednesday
3 JUN 2026
Thursday
4 JUN 2026
Friday
5 JUN 2026
Low 67° Low 65° Low 61° Low 64° Low 63°
High 85° High 83° High 84° High 83° High 79°
SAINT LOUIS, MO 63121 weather forecast Day 4 SAINT LOUIS, MO 63121 weather forecast Day 5 SAINT LOUIS, MO 63121 weather forecast Day 6 SAINT LOUIS, MO 63121 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
57% Rain
Clear
4% Rain
Partly Cloudy
7% Rain
Partly Cloudy
20% Rain
Overcast
32% Rain
WEATHER SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Saint Louis, MO
Saint Louis, MO snow
Saint Louis, MO radar
MO map
-or-
-or-
-or-
 
63121
63121 snow
63121 radar
 
-or-
-or-
 
 
MO
MO snow
 
 
Copyright © 2024 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions