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

Jackson County Airport - Reynolds Field (KJXN)

Lat: 42.26°NLon: 84.46°WElev: 988ft.

Fair

58°F

14°C

Humidity 87%
Wind Speed SW 3 mph
Barometer 30.09 in (1018.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 24 Aug 11:56 pm EDT
Extended Forecast for

Grass Lake MI

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Light northwest wind.

    Low: 52 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 81. Calm wind.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am. Partly cloudy, with a low around 61. South southwest wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Light northwest wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 81. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 56. Calm wind.
Wednesday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am. Partly cloudy, with a low around 61. South southwest wind 3 to 7 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly cloudy, with a low around 61.
Sunday
A chance of showers. Partly sunny, with a high near 83.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 65.
Monday
A chance of showers. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grass Lake MI
 42.25°N 84.2°W (Elev. 997 ft)
Last Update:
12:03 am EDT Aug 25, 2026
Forecast Valid:
12am EDT Aug 25, 2026-6pm EDT Aug 31, 2026
 
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