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

81°F

27°C

Humidity 51%
Wind Speed SE 5 mph
Barometer 30.24 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 5 Aug 2:30 pm EDT
Extended Forecast for

Plain City OH

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 83. Southeast wind around 6 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 63. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. Light east wind.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 83. Southeast wind around 6 mph.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 63. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 62. Light east wind.
Thursday
Sunny, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 68.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Plain City OH
 40.11°N 83.27°W (Elev. 928 ft)
Last Update:
1:29 pm EDT Aug 5, 2025
Forecast Valid:
2pm EDT Aug 5, 2025-6pm EDT Aug 11, 2025
 
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