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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Muscatine (KMUT)

Lat: 41.37°NLon: 91.15°WElev: 548ft.

Fair

59°F

15°C

Humidity 63%
Wind Speed NE 7 mph
Barometer 30.18 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 May 8:35 pm CDT
Extended Forecast for

Letts IA

  • Tonight

    Tonight: Mostly clear, with a low around 46. East wind 5 to 10 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 49. East wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 65. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 65 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 46. East wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 49. East wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 65. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 52.
Saturday
Partly sunny, with a high near 75.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 55.
Memorial Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 85.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Letts IA
 41.33°N 91.24°W (Elev. 650 ft)
Last Update:
2:41 pm CDT May 20, 2026
Forecast Valid:
8pm CDT May 20, 2026-6pm CDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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