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

Hazardous Weather Conditions

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Fair

79°F

26°C

Humidity 98%
Wind Speed SW 7 mph
Barometer 29.96 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 11 Aug 1:35 am CDT
Extended Forecast for

Plymouth IL

Heat Advisory August 11, 12:00pm until August 11, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 75. South wind 5 to 10 mph.

    Low: 75 °F

    Patchy Fog

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before noon. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 92. Heat index values as high as 103. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Chance
    T-storms and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly between 11am and 3pm. Mostly sunny, with a high near 90. Southeast wind around 5 mph becoming northeast in the morning.

    High: 90 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 70%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.

    Low: 70 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 75. South wind 5 to 10 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before noon. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 92. Heat index values as high as 103. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly between 11am and 3pm. Mostly sunny, with a high near 90. Southeast wind around 5 mph becoming northeast in the morning.
Wednesday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 70%.
Thursday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Friday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 83.
Friday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 90.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Plymouth IL
 40.29°N 90.91°W (Elev. 650 ft)
Last Update:
1:26 am CDT Aug 11, 2026
Forecast Valid:
1am CDT Aug 11, 2026-6pm CDT Aug 17, 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