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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 Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

66°F

19°C

Humidity 75%
Wind Speed NE 8 mph
Barometer 29.89 in (1011.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 22 May 6:51 pm CDT
Extended Forecast for

Saint John MO

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 8pm. Cloudy, with a low around 61. Northeast wind around 6 mph becoming calm in the evening.

    Low: 61 °F

    Chance
    Showers then
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 3am. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 65. Southwest wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. Light and variable wind. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. Light and variable wind.

    Low: 64 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly before 8pm. Cloudy, with a low around 61. Northeast wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 3am. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 65. Southwest wind 3 to 5 mph. Chance of precipitation is 60%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. Light and variable wind. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 64. Light and variable wind.
Memorial Day
Partly sunny, with a high near 83.
Monday Night
Mostly cloudy, with a low around 65.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint John MO
 38.71°N 90.34°W (Elev. 597 ft)
Last Update:
6:06 pm CDT May 22, 2026
Forecast Valid:
7pm CDT May 22, 2026-6pm CDT May 29, 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