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

Hazardous Weather Conditions

Current conditions at

Jackson County Airport - Reynolds Field (KJXN)

Lat: 42.26°NLon: 84.46°WElev: 988ft.

A Few Clouds

88°F

31°C

Humidity 61%
Wind Speed S 14 G 28 mph
Barometer 29.94 in (1013.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 21 Jun 2:56 pm EDT
Extended Forecast for

Grass Lake MI

Heat Advisory until June 22, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 22, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Heat index values as high as 103. West southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 74. Southwest wind around 9 mph.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 94. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 94 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers after 2pm. Mostly sunny and hot, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 90. Heat index values as high as 97. South southwest wind around 16 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 75. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.
Sunday
Sunny and hot, with a high near 94. Heat index values as high as 103. West southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Clear, with a low around 74. Southwest wind around 9 mph.
Monday
Sunny and hot, with a high near 94. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A 50 percent chance of showers after 2pm. Mostly sunny and hot, with a high near 92.
Tuesday Night
A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 68.
Wednesday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 88.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Friday
A chance of showers. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grass Lake MI
 42.25°N 84.2°W (Elev. 997 ft)
Last Update:
3:03 pm EDT Jun 21, 2025
Forecast Valid:
3pm EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
Forecast Discussion
 
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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