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.

Mostly Cloudy

77°F

25°C

Humidity 83%
Wind Speed NE 8 mph
Barometer 30.07 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 7 Jul 11:35 am EDT
Extended Forecast for

2 Miles ESE Irwin OH

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 85. North wind around 9 mph.

    High: 85 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. North wind 5 to 8 mph becoming calm after midnight.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 87. Light north wind.

    High: 87 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 80%.

    High: 84 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a high near 85. North wind around 9 mph.
Tonight
Partly cloudy, with a low around 64. North wind 5 to 8 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 87. Light north wind.
Wednesday Night
Mostly cloudy, with a low around 66. Calm wind.
Thursday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 66. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Irwin OH
 40.12°N 83.41°W (Elev. 978 ft)
Last Update:
4:00 am EDT Jul 7, 2026
Forecast Valid:
12pm EDT Jul 7, 2026-6pm EDT Jul 13, 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