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

Marysville Union County Airport (KMRT)

Lat: 40.22°NLon: 83.35°WElev: 1021ft.

Fair

73°F

23°C

Humidity 89%
Wind Speed NE 3 mph
Barometer 30.08 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 8 Jul 8:35 am EDT
Extended Forecast for

Marysville OH

  • Today

    Today: Areas of fog before 9am. Otherwise, partly sunny, with a high near 87. Light north wind.

    High: 87 °F

    Areas Fog
    then Partly
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 68. Light and variable wind.

    Low: 68 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 88. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Southwest 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.

    Low: 68 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 84. South wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers before 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Today
Areas of fog before 9am. Otherwise, partly sunny, with a high near 87. Light north wind.
Tonight
Mostly cloudy, with a low around 68. Light and variable wind.
Thursday
A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 88. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Southwest 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.
Friday
Showers and possibly a thunderstorm. High near 84. South wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Partly sunny, with a high near 84.
Saturday Night
Mostly cloudy, with a low around 64.
Sunday
A chance of showers before 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville OH
 40.25°N 83.37°W (Elev. 997 ft)
Last Update:
4:00 am EDT Jul 8, 2026
Forecast Valid:
8am EDT Jul 8, 2026-6pm EDT Jul 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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