Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Marysville Union County Airport (KMRT)

Lat: 40.22°NLon: 83.35°WElev: 1021ft.

Fair

93°F

34°C

Humidity 53%
Wind Speed SW 10 mph
Barometer 30.09 in
Dewpoint 73°F (23°C)
Visibility 8.00 mi
Heat Index103°F (39°C)
Last update 1 Jul 2:35 pm EDT
Extended Forecast for

Marysville OH

Extreme Heat Warning July 1, 02:51pm until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 02:51pm until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 73. Southwest wind 5 to 7 mph.

    Low: 73 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Heat index values as high as 104. West wind 3 to 8 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Southwest wind 3 to 6 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 93. West wind 3 to 7 mph.  Chance of precipitation is 30%.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 93. Chance of precipitation is 50%.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Heat index values as high as 104. Southwest wind around 8 mph.
Tonight
Clear, with a low around 73. Southwest wind 5 to 7 mph.
Thursday
Sunny, with a high near 93. Heat index values as high as 104. West wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 75. Southwest wind 3 to 6 mph.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. West wind 3 to 7 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Independence Day
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 93. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville OH
 40.25°N 83.37°W (Elev. 997 ft)
2:11 pm EDT Jul 1, 2026
2pm EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
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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