Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Light Rain

59°F

15°C

Humidity 93%
Wind Speed SE 9 mph
Barometer 29.78 in (1008.0 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 7 Mar 6:54 am CST
Extended Forecast for

Byrnes Mill MO

Flood Warning March 7, 07:22am until March 9, 04:16pm
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning March 7, 07:22am until March 9, 04:16pm

    NOW until 4:16pm Mon

    Flood Warning

  • Today

    High: 65 °F

    Rain then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 37 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 68. Calm wind becoming southwest around 6 mph in the morning.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 48. Southwest wind 3 to 5 mph.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 22 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain and thunderstorms after midnight.  Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear
    then Chance
    Rain

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm.  Partly sunny, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm.  Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Rain

Detailed Forecast

Today
Rain and possibly a thunderstorm before 9am, then a chance of rain between 9am and 11am. Temperature rising to near 65 by 10am, then falling to around 56 during the remainder of the day. South wind 7 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 68. Calm wind becoming southwest around 6 mph in the morning.
Sunday Night
Clear, with a low around 48. Southwest wind 3 to 5 mph.
Monday
Sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 22 mph.
Monday Night
A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 60.
Tuesday
Rain likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 70%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 66. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Mostly cloudy, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Byrnes Mill MO
 38.45°N 90.58°W (Elev. 525 ft)
5:21 am CST Mar 7, 2026
7am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
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Additional Resources

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