NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

77°F

25°C

Humidity	57%
Wind Speed	S 13 mph
Barometer	29.82 in
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	15 May 6:50 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles NNE Marine IL

Tonight
Low: 66 °F
Mostly Cloudy
then Chance
T-storms
Saturday
High: 81 °F
T-storms
Likely
Saturday Night
Low: 64 °F
Chance
T-storms then
Mostly Clear
Sunday
High: 88 °F
Sunny then
Sunny and
Breezy
Sunday Night
Low: 68 °F
Mostly Clear
Monday
High: 88 °F
Breezy.
Mostly Sunny
then Chance
T-storms
Monday Night
Low: 69 °F
Chance
T-storms and
Breezy
Tuesday
High: 81 °F
Showers
Likely then
T-storms
Tuesday Night
Low: 59 °F
Showers
Likely

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 66. South wind 8 to 13 mph, with gusts as high as 22 mph.

Saturday

Showers and thunderstorms likely, mainly between 7am and noon. Mostly cloudy, with a high near 81. South wind 7 to 10 mph. Chance of precipitation is 70%.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Southeast wind 6 to 8 mph.

Sunday

Sunny, with a high near 88. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.

Sunday Night

Mostly clear, with a low around 68. South wind 14 to 17 mph.

Monday

A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Breezy.

Monday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Breezy.

Tuesday

Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

Tuesday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

Wednesday

A 20 percent chance of showers. Partly sunny, with a high near 71.

Wednesday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 53.

Thursday

Mostly sunny, with a high near 73.

Thursday Night

A 20 percent chance of showers. Partly cloudy, with a low around 54.

Friday

A 20 percent chance of showers. Mostly sunny, with a high near 78.