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

73°F

23°C

Humidity 65%
Wind Speed S 10 mph
Barometer 30.00 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 May 12:15 am EDT
Extended Forecast for

Ottawa OH

  • Overnight

    Overnight: Mostly clear, with a low around 67. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 88. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 69. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm after 2pm. High near 88. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.

    High: 88 °F

    Breezy. Sunny
    then Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 59. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 68.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 67. South wind around 10 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 88. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 69. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm after 2pm. High near 88. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 59. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 68.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 49.
Friday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 73.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Ottawa OH
 41.02°N 84.04°W (Elev. 699 ft)
Last Update:
1:16 am EDT May 18, 2026
Forecast Valid:
2am EDT May 18, 2026-6pm EDT May 24, 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