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

Hazardous Weather Conditions

Current conditions at

Mason, Mason Jewett Field Airport (KTEW)

Lat: 42.57°NLon: 84.42°WElev: 919ft.

Overcast

76°F

24°C

Humidity 83%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 20 Jun 5:55 pm EDT
Extended Forecast for

Onondaga MI

Heat Advisory June 21, 12:00pm until June 22, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 68 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 91. Heat index values as high as 98. South southwest wind 13 to 16 mph, with gusts as high as 28 mph.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Heat index values as high as 100. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 74. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

  • Monday Night

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

    Low: 73 °F

    Mostly Clear

  • Tuesday

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

    High: 92 °F

    Sunny then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, with thunderstorms also possible after 8pm. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 6 to 8 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny and hot, with a high near 91. Heat index values as high as 98. South southwest wind 13 to 16 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 77. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.
Sunday
Sunny and hot, with a high near 94. Heat index values as high as 100. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Clear, with a low around 74. Southwest wind around 9 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 94.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A chance of showers after 2pm. Mostly sunny and hot, with a high near 92.
Tuesday Night
A chance of showers, with thunderstorms also possible after 8pm. Partly cloudy, with a low around 68.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 89.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Thursday
A chance of showers. Partly sunny, with a high near 87.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Onondaga MI
 42.45°N 84.53°W (Elev. 925 ft)
Last Update:
6:03 pm EDT Jun 20, 2025
Forecast Valid:
6pm EDT Jun 20, 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