Ohio · NWS ILN office

Marysville, OH weather

It is 48°F and fog/mist at Marysville Union County Airport as of Oct 28, 4:55 AM EDT. Overnight: Cloudy, low near 47°F. Forecast from the National Weather Service, issued Oct 28, 4:00 AM EDT.

Updated Oct 28, 5:25 AM EDT (snapshot)

Current conditions

Temperature

48°F

Fog/Mist

Wind

WSW 1 mph

Humidity 100% · dew point 48°F

Pressure · visibility

30.27 inHg

Visibility 4 mi

Observed at Marysville Union County Airport (KMRT), Oct 28, 4:55 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Marysville forecast zone right now.

Around the NWS ILN forecast area

No active alerts in zones served by the ILN office near Marysville.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Ohio.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Marysville (local time)
TimeTempForecastPrecip. chanceWind
Wed 5 AM48°FCloudy0%S 1 mph
Wed 6 AM47°FPartly Sunny0%S 1 mph
Wed 7 AM47°FPartly Sunny0%S 1 mph
Wed 8 AM47°FPartly Sunny0%SW 1 mph
Wed 9 AM50°FSunny0%SW 2 mph
Wed 10 AM56°FSunny0%S 2 mph
Wed 11 AM61°FSunny0%SW 3 mph
Wed 12 PM66°FSunny0%SW 3 mph
Wed 1 PM70°FSunny0%SW 5 mph
Wed 2 PM72°FSunny0%SW 5 mph
Wed 3 PM73°FSunny0%SW 5 mph
Wed 4 PM73°FSunny0%SW 5 mph
Wed 5 PM74°FSunny0%SW 5 mph
Wed 6 PM70°FMostly Clear0%SW 2 mph
Wed 7 PM66°FMostly Clear0%SW 2 mph
Wed 8 PM62°FMostly Clear0%S 1 mph
Wed 9 PM56°FMostly Clear0%S 1 mph
Wed 10 PM55°FMostly Clear0%S 1 mph
Wed 11 PM53°FMostly Clear0%S 2 mph
Thu 12 AM52°FClear0%S 2 mph
Thu 1 AM51°FClear0%SW 2 mph
Thu 2 AM50°FClear0%S 2 mph
Thu 3 AM50°FClear0%S 3 mph
Thu 4 AM49°FClear0%SW 3 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Marysville can differ.

7-day forecast

Overnight

Low 47°F

Cloudy, with a low around 47. South wind around 1 mph.

Wednesday

High 74°F·Low 47°F

Sunny, with a high near 74. South wind 1 to 5 mph.

Wednesday Night: Mostly clear, with a low around 47. Southwest wind around 3 mph.

Thursday

High 75°F·Low 49°F

Sunny, with a high near 75. Southwest wind 5 to 12 mph.

Thursday Night: Partly cloudy, with a low around 49. West wind 3 to 9 mph.

Friday

High 68°F·Low 45°F

Sunny, with a high near 68.

Friday Night: Mostly cloudy, with a low around 45.

Saturday

High 67°F·Low 49°F

Mostly cloudy, with a high near 67.

Saturday Night: Cloudy, with a low around 49.

Sunday

High 68°F·Low 50°F

A chance of rain after 7am. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.

Monday

High 68°F·Low 52°F

A chance of rain. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

Monday Night: A chance of rain. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.

Tuesday

High 68°F

Rain likely. Mostly cloudy, with a high near 68.

Nearby cities

Larger cities in the area

See every city we cover in Ohio, or check all active alerts.

About this forecast

Forecast office
Marysville is served by the National Weather Service ILN forecast office, forecast zone OHZ045, county zone OHC159.
Location used
The Census Bureau's internal point for Marysville (40.2280, -83.3594), in Union County. Population: 29,276 (2024 estimate), number 50 of the 86 Ohio cities on this site.
Radar
Nearest NWS radar: KILN. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/40.228,-83.3594 (forecast issued Oct 28, 4:00 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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