National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

79°F

26°C

Humidity 77%
Wind Speed N 5 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 6 Sep 11:53 am CDT
Extended Forecast for

Mapaville MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. Northeast wind 3 to 6 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Northeast wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Sunny, with a high near 90. Light east wind.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 61. Light east wind.

    Low: 61 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 90. Northeast wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 62. Northeast wind around 5 mph becoming calm after midnight.
Labor Day
Sunny, with a high near 90. Light east wind.
Monday Night
Increasing clouds, with a low around 61. Light east wind.
Tuesday
Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Thursday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 62.
Friday
A 20 percent chance of showers. Sunny, with a high near 87.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 62.
Saturday
A 20 percent chance of showers. Sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mapaville MO
 38.27°N 90.5°W (Elev. 499 ft)
Last Update:
11:26 am CDT Sep 6, 2026
Forecast Valid:
12pm CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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