Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

75°F

24°C

Humidity 84%
Wind Speed E 5 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Sep 1:54 am CDT
Extended Forecast for

3 Miles NE Cave MO

  • Overnight

    Overnight: Mostly clear, with a low around 72. Light south wind.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 95. Heat index values as high as 100. Calm wind becoming west 5 to 7 mph in the morning.

    High: 95 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers before noon, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 88. Light northwest wind.  Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am.  Low around 64. Northeast wind 3 to 6 mph.  Chance of precipitation is 80%.

    Low: 64 °F

    Chance
    T-storms then
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm.  Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 57.

    Low: 57 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 72. Light south wind.
Saturday
Partly sunny, with a high near 95. Heat index values as high as 100. Calm wind becoming west 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 71. Calm wind.
Sunday
A chance of showers before noon, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 88. Light northwest wind. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 64. Northeast wind 3 to 6 mph. Chance of precipitation is 80%.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 68.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Cave MO
 39.06°N 91.01°W (Elev. 482 ft)
1:26 am CDT Sep 19, 2026
2am CDT Sep 19, 2026-6pm CDT Sep 25, 2026
 
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Additional Resources

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