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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Hazardous Weather Conditions

Current conditions at

Mason, Mason Jewett Field Airport (KTEW)

Lat: 42.57°NLon: 84.42°WElev: 919ft.

Fair

39°F

4°C

Humidity 69%
Wind Speed Calm
Barometer 30.44 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 18 Oct 1:55 am EDT
Extended Forecast for

Onondaga MI

Frost Advisory October 18, 03:00am until October 18, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Overnight

    Overnight: Areas of frost. Otherwise, clear, with a low around 34. South southwest wind around 5 mph.

    Low: 34 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 59. Southwest wind 6 to 11 mph, with gusts as high as 23 mph.

    High: 59 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. South wind 3 to 6 mph.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 64. Light southwest wind.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Areas of frost. Otherwise, clear, with a low around 34. South southwest wind around 5 mph.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 59. Southwest wind 6 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Clear, with a low around 37. South wind 3 to 6 mph.
Monday
Sunny, with a high near 64. Light southwest wind.
Monday Night
Mostly clear, with a low around 36. Calm wind.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 66.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Onondaga MI
 42.45°N 84.53°W (Elev. 925 ft)
Last Update:
2:06 am EDT Oct 18, 2026
Forecast Valid:
2am EDT Oct 18, 2026-6pm EDT Oct 24, 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