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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Marysville Union County Airport (KMRT)

Lat: 40.22°NLon: 83.35°WElev: 1021ft.

Partly Cloudy

75°F

24°C

Humidity 39%
Wind Speed SW 12 G 21 mph
Barometer 29.79 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 16 Jun 2:35 pm EDT
Extended Forecast for

Marysville OH

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 75. Southwest wind 11 to 13 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 56. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 78. Southwest wind 7 to 10 mph.

    High: 78 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then showers and possibly a thunderstorm between midnight and 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Low around 66. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 66 °F

    Breezy.
    Chance
    T-storms then
    Heavy Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 78. Breezy, with a west wind 18 to 21 mph, with gusts as high as 33 mph.

    High: 78 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 75. Southwest wind 11 to 13 mph.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 56. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Increasing clouds, with a high near 78. Southwest wind 7 to 10 mph.
Wednesday Night
A chance of showers and thunderstorms before midnight, then showers and possibly a thunderstorm between midnight and 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Low around 66. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday
Mostly sunny, with a high near 78. Breezy, with a west wind 18 to 21 mph, with gusts as high as 33 mph.
Thursday Night
Partly cloudy, with a low around 57.
Juneteenth
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Monday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marysville OH
 40.25°N 83.4°W (Elev. 997 ft)
Last Update:
2:11 pm EDT Jun 16, 2026
Forecast Valid:
2pm EDT Jun 16, 2026-6pm EDT Jun 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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