Sangamon County weather, town by town
25 places in Sangamon 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.
Sangamon County Weather Facts
Sangamon County has 25 places on myweatherrock (22 villages, 3 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 113°F at Decatur Wtp on July 14, 1954. The coldest night is -25°F at Decatur Wtp on February 13, 1905. The wettest day brought 6.5 inches of rain at Sherman on July 12, 2008. The biggest single-day snow measured 17.01 inches at Springfield Abraham Lincoln Ca on March 24, 2013. Those are station measurements from NOAA's daily records, 1893 to 2026, not official state records. By area the largest place is Springfield, about 61 square miles.
About Sangamon County weather
The map on the Now tab shows every Sangamon 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 25 Sangamon 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 19°F. May is the wettest, with rain on about 13 days.
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.
Sangamon 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 Sangamon County weather
- What is the hottest temperature recorded at a Sangamon County station?
- 113°F at Decatur Wtp on July 14, 1954, in the NOAA daily station records myweatherrock holds (1893 to 2026).
- What is the coldest temperature recorded at a Sangamon County station?
- -25°F at Decatur Wtp on February 13, 1905.
- What is the most rain a Sangamon County station has measured in one day?
- 6.5 inches at Sherman on July 12, 2008.
- What is the biggest one-day snowfall at a Sangamon County station?
- 17.01 inches at Springfield Abraham Lincoln Ca on March 24, 2013.
- How many Sangamon County towns have a weather page here?
- 25: 22 villages, 3 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 Sangamon 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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