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

Heavy to Excessive Rainfall This Week from the Southwest into Central U.S.

Pacific tropical moisture wrapping into a storm over the southwest U.S. will continue a multi-day heavy rainfall event this week that will extend into the Midwest and southern Plains. Considerable flash flooding is possible across portions of New Mexico and west Texas today through Wednesday. Read More >

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Fair

78°F

26°C

Humidity 36%
Wind Speed S 12 mph
Barometer 30.03 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 29 Sep 11:15 am CDT
Extended Forecast for

Colchester IL

  • Today

    Today: Mostly sunny, with a high near 79. South wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 65. South wind around 5 mph.

    Low: 65 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Showers likely before 2pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 78. Southeast wind around 5 mph. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 68. Southeast wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers. High near 75. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    High: 75 °F

    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 61. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 61 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 79. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 65. South wind around 5 mph.
Wednesday
Showers likely before 2pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 78. Southeast wind around 5 mph. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 68. Southeast wind around 5 mph.
Thursday
Showers. High near 75. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
Showers. Low around 61. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday
A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 66.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 48.
Monday
Sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Colchester IL
 40.42°N 90.78°W (Elev. 669 ft)
Last Update:
5:21 am CDT Sep 29, 2026
Forecast Valid:
11am CDT Sep 29, 2026-6pm CDT Oct 5, 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