Putnam County weather, town by town
6 places in Putnam 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 1895 to 2026. Station extremes, not official state records.
Putnam County Weather Facts
Putnam County has 6 places on myweatherrock (6 villages), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 111°F at Minonk on July 14, 1936. The coldest night is -28°F at Minonk on February 13, 1905. The wettest day brought 8.77 inches of rain at Ottawa 4Sw on July 14, 1958. The biggest single-day snow measured 15 inches at Princeton on December 1, 2006. Those are station measurements from NOAA's daily records, 1895 to 2026, not official state records. By area the largest place is Hennepin, about 5 square miles.
About Putnam County weather
The map on the Now tab shows every Putnam 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 6 Putnam 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 15°F. May is the wettest, with rain on about 10 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.
Putnam County weather records
Measured at the NOAA stations serving these towns, daily records 1895 to 2026. Station extremes, not official state records.
Common questions about Putnam County weather
- What is the hottest temperature recorded at a Putnam County station?
- 111°F at Minonk on July 14, 1936, in the NOAA daily station records myweatherrock holds (1895 to 2026).
- What is the coldest temperature recorded at a Putnam County station?
- -28°F at Minonk on February 13, 1905.
- What is the most rain a Putnam County station has measured in one day?
- 8.77 inches at Ottawa 4Sw on July 14, 1958.
- What is the biggest one-day snowfall at a Putnam County station?
- 15 inches at Princeton on December 1, 2006.
- How many Putnam County towns have a weather page here?
- 6: 6 villages. 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 Putnam 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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