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

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Partly Cloudy

51°F

11°C

Humidity 77%
Wind Speed NE 10 mph
Barometer 30.26 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 21 May 2:15 am CDT
Extended Forecast for

5 Miles SSE Colchester IL

  • Overnight

    Overnight: Partly cloudy, with a low around 45. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 68. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 68 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. Northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 70. East wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 52. East wind around 10 mph, with gusts as high as 20 mph.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 68. East wind 10 to 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 54.
Saturday
Partly sunny, with a high near 78.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 57.
Memorial Day
Mostly sunny, with a high near 83.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 84.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Wednesday
A 50 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:
5 Miles SSE Colchester IL
 40.36°N 90.76°W (Elev. 650 ft)
Last Update:
2:16 am CDT May 21, 2026
Forecast Valid:
2am CDT May 21, 2026-6pm CDT May 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation