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

Ottawa Putnam County Airport (KOWX)

Lat: 41.04°NLon: 83.98°WElev: 763ft.

Fair

61°F

16°C

Humidity 100%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 4 Aug 8:15 am EDT
Extended Forecast for

Grelton OH

  • Today

    Today: Sunny, with a high near 82. Calm wind.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 60%.

    High: 83 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Calm wind.
Tonight
Mostly clear, with a low around 58. Calm wind.
Wednesday
Sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm.
Thursday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 83.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 66.
Sunday
A 10 percent chance of showers. Mostly sunny, with a high near 87.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grelton OH
 41.3°N 84.07°W (Elev. 663 ft)
Last Update:
7:01 am EDT Aug 4, 2026
Forecast Valid:
8am EDT Aug 4, 2026-6pm EDT Aug 10, 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