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

Marion, Marion Municipal Airport (KMNN)

Lat: 40.62°NLon: 83.07°WElev: 994ft.

Overcast

59°F

15°C

Humidity 96%
Wind Speed Calm
Barometer 30.09 in (1018.8 mb)
Dewpoint 58°F (14°C)
Visibility 8.00 mi
Last update 24 May 7:53 am EDT
Extended Forecast for

Harpster OH

  • Today

    Today: A slight chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 76. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Partly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 58. Light northwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Memorial Day

    Memorial Day: Cloudy, then gradually becoming mostly sunny, with a high near 78. Northeast wind around 6 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 59. East wind 3 to 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 83. East wind 3 to 5 mph.

    High: 83 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 76. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 58. Light northwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Memorial Day
Cloudy, then gradually becoming mostly sunny, with a high near 78. Northeast wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 59. East wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 83. East wind 3 to 5 mph.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Harpster OH
 40.75°N 83.26°W (Elev. 899 ft)
Last Update:
3:46 am EDT May 24, 2026
Forecast Valid:
8am EDT May 24, 2026-6pm EDT May 30, 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