Delaware County weather, town by town
9 places in Delaware County, Ohio, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1917 to 2026. Station extremes, not official state records.
Delaware County Weather Facts
Delaware County has 9 places on myweatherrock (4 villages, 3 cities, 2 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 109°F at Marysville on July 14, 1936. The coldest night is -27°F at Westerville on January 28, 1963. The wettest day brought 5.23 inches of rain at Sunbury 5.7 Ese on August 2, 2024. The biggest single-day snow measured 15.98 inches at Marysville on December 23, 2004. Those are station measurements from NOAA's daily records, 1917 to 2026, not official state records. By area the largest place is Delaware, about 20 square miles.
About Delaware County weather
The map on the Now tab shows every Delaware County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 9 Delaware County towns with station normals, the warmest month is July, when the day usually reaches 85°F, and the coldest is January, when the night usually falls to 21°F. May is the wettest, with rain on about 14 days. January nights run from about 19°F in Ashley to 22°F in Galena.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Delaware County weather records
Measured at the NOAA stations serving these towns, daily records 1917 to 2026. Station extremes, not official state records.
Common questions about Delaware County weather
- What is the hottest temperature recorded at a Delaware County station?
- 109°F at Marysville on July 14, 1936, in the NOAA daily station records myweatherrock holds (1917 to 2026).
- What is the coldest temperature recorded at a Delaware County station?
- -27°F at Westerville on January 28, 1963.
- What is the most rain a Delaware County station has measured in one day?
- 5.23 inches at Sunbury 5.7 Ese on August 2, 2024.
- What is the biggest one-day snowfall at a Delaware County station?
- 15.98 inches at Marysville on December 23, 2004.
- How many Delaware County towns have a weather page here?
- 9: 4 villages, 3 cities, 2 census-designated places. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Delaware County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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