Hamilton County has 83 places on myweatherrock (48 census-designated places, 19 villages, 16 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 106°F at Fairfield on July 7, 2012. The coldest night is -25°F at Cincinnati/Northern Kentucky I on January 18, 1977. The wettest day brought 5.26 inches of rain at Fairfield on July 28, 2023. The biggest single-day snow measured 12.52 inches at Kings Mills on December 23, 2004. Those are station measurements from NOAA's daily records, 1948 to 2026, not official state records. By area the largest place is Cincinnati, about 78 square miles.
About Hamilton County weather
The map on the Now tab shows every Hamilton 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 83 Hamilton County towns with station normals, the warmest month is July, when the day usually reaches 86°F, and the coldest is January, when the night usually falls to 23°F. May is the wettest, with rain on about 14 days. January nights run from about 21°F in Blue Jay to 24°F in Amberley.
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.
Hamilton County weather records
Hottest day
106°F
Fairfield, July 7, 2012
Coldest night
-25°F
Cincinnati/Northern Kentucky I, January 18, 1977
Wettest day
5.26 in
Fairfield, July 28, 2023
Biggest snow
12.52 in
Kings Mills, December 23, 2004
Measured at the NOAA stations serving these towns, daily records 1948 to 2026. Station extremes, not official state records.
Common questions about Hamilton County weather
What is the hottest temperature recorded at a Hamilton County station?
106°F at Fairfield on July 7, 2012, in the NOAA daily station records myweatherrock holds (1948 to 2026).
What is the coldest temperature recorded at a Hamilton County station?
-25°F at Cincinnati/Northern Kentucky I on January 18, 1977.
What is the most rain a Hamilton County station has measured in one day?
5.26 inches at Fairfield on July 28, 2023.
What is the biggest one-day snowfall at a Hamilton County station?
12.52 inches at Kings Mills on December 23, 2004.
How many Hamilton County towns have a weather page here?
83: 48 census-designated places, 19 villages, 16 cities. 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 Hamilton 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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