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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

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

72°F

22°C

Humidity 71%
Wind Speed S 6 mph
Barometer 29.80 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 16 May 12:55 am CDT
Extended Forecast for

Maryville IL

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 70. South wind 7 to 9 mph.

    Low: 70 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 3pm. High near 83. South wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 83 °F

    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Southeast wind 7 to 9 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 89. Breezy, with a south wind 10 to 20 mph, with gusts as high as 28 mph.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71. South wind 14 to 17 mph, with gusts as high as 25 mph.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 89. Breezy. Chance of precipitation is 50%.

    High: 89 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 70. South wind 7 to 9 mph.
Saturday
Showers and thunderstorms, mainly before 3pm. High near 83. South wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 66. Southeast wind 7 to 9 mph.
Sunday
Sunny, with a high near 89. Breezy, with a south wind 10 to 20 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 71. South wind 14 to 17 mph, with gusts as high as 25 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 89. Breezy. Chance of precipitation is 50%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.
Tuesday
Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Wednesday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 54.
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 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
1:25 am CDT May 16, 2026
Forecast Valid:
1am CDT May 16, 2026-6pm CDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation