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

Hazardous Weather Conditions

Current conditions at

Ottawa Putnam County Airport (KOWX)

Lat: 41.04°NLon: 83.98°WElev: 763ft.

Fair

90°F

32°C

Humidity 67%
Wind Speed SW 9 mph
Barometer 29.98 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 2 Sep 6:15 pm EDT
Extended Forecast for

Ottawa OH

Heat Advisory September 2, 06:21pm until September 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 06:21pm until September 3, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 100. West wind around 10 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southwest wind around 5 mph. Chance of precipitation is 50%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 87. Northwest wind around 5 mph. Chance of precipitation is 50%.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 8pm, then showers likely and possibly a thunderstorm after 2am. Partly cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and thunderstorms likely before 11am, then a chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 60.

    Low: 60 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 73. Southwest wind around 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 100. West wind around 10 mph.
Thursday Night
A slight chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southwest wind around 5 mph. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Northwest wind around 5 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of showers before 8pm, then showers likely and possibly a thunderstorm after 2am. Partly cloudy, with a low around 67. East wind around 5 mph. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely before 11am, then a chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 60.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 58.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ottawa OH
 41.02°N 84.04°W (Elev. 699 ft)
Last Update:
6:16 pm EDT Sep 2, 2026
Forecast Valid:
6pm EDT Sep 2, 2026-6pm EDT Sep 9, 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