Henry County weather, town by town
18 places in Henry County, Illinois, 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 1893 to 2026. Station extremes, not official state records.
Henry County Weather Facts
Henry County has 18 places on myweatherrock (8 villages, 4 cities, 4 census-designated places, 2 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 112°F at Galesburg on July 15, 1936. The coldest night is -33°F at Moline Quad City Intl Ap on January 31, 2019. The wettest day brought 9.15 inches of rain at Galva on August 20, 1924. The biggest single-day snow measured 17.6 inches at Kewanee 1E on February 2, 2011. Those are station measurements from NOAA's daily records, 1893 to 2026, not official state records. By area the largest place is Kewanee, about 7 square miles.
About Henry County weather
The map on the Now tab shows every Henry 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 18 Henry 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 14°F. May is the wettest, with rain on about 12 days. July afternoons run from about 83°F in Annawan to 86°F in Lynn Center.
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.
Henry County weather records
Measured at the NOAA stations serving these towns, daily records 1893 to 2026. Station extremes, not official state records.
Common questions about Henry County weather
- What is the hottest temperature recorded at a Henry County station?
- 112°F at Galesburg on July 15, 1936, in the NOAA daily station records myweatherrock holds (1893 to 2026).
- What is the coldest temperature recorded at a Henry County station?
- -33°F at Moline Quad City Intl Ap on January 31, 2019.
- What is the most rain a Henry County station has measured in one day?
- 9.15 inches at Galva on August 20, 1924.
- What is the biggest one-day snowfall at a Henry County station?
- 17.6 inches at Kewanee 1E on February 2, 2011.
- How many Henry County towns have a weather page here?
- 18: 8 villages, 4 cities, 4 census-designated places, 2 towns. 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 Henry 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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