Lake County weather, town by town
55 places in Lake 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 1948 to 2026. Station extremes, not official state records.
Lake County Weather Facts
Lake County has 55 places on myweatherrock (39 villages, 9 census-designated places, 7 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 Paddock Lake 4 Ne on July 7, 2012. The coldest night is -32°F at Mchenry Stratton Lock/Dam on January 31, 2019. The wettest day brought 6.12 inches of rain at Paddock Lake 4 Ne on July 12, 2017. The biggest single-day snow measured 17.52 inches at Mundelein 4Wsw on February 2, 2011. Those are station measurements from NOAA's daily records, 1948 to 2026, not official state records. By area the largest place is Waukegan, about 24 square miles.
About Lake County weather
The map on the Now tab shows every Lake 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 55 Lake County towns with station normals, the warmest month is July, when the day usually reaches 82°F, and the coldest is January, when the night usually falls to 15°F. May is the wettest, with rain on about 13 days. July afternoons run from about 81°F in Beach Park to 84°F in Bannockburn. January nights run from about 12°F in Antioch to 18°F in Bannockburn.
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.
Lake County weather records
Measured at the NOAA stations serving these towns, daily records 1948 to 2026. Station extremes, not official state records.
Common questions about Lake County weather
- What is the hottest temperature recorded at a Lake County station?
- 106°F at Paddock Lake 4 Ne on July 7, 2012, in the NOAA daily station records myweatherrock holds (1948 to 2026).
- What is the coldest temperature recorded at a Lake County station?
- -32°F at Mchenry Stratton Lock/Dam on January 31, 2019.
- What is the most rain a Lake County station has measured in one day?
- 6.12 inches at Paddock Lake 4 Ne on July 12, 2017.
- What is the biggest one-day snowfall at a Lake County station?
- 17.52 inches at Mundelein 4Wsw on February 2, 2011.
- How many Lake County towns have a weather page here?
- 55: 39 villages, 9 census-designated places, 7 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 Lake 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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