Lewis County weather, town by town
21 places in Lewis County, New York, 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 1891 to 2026. Station extremes, not official state records.
Lewis County Weather Facts
Lewis County has 21 places on myweatherrock (16 towns, 5 villages), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 100°F at Lowville on July 2, 1931. The coldest night is -52°F at Stillwater Rsvr on February 9, 1934. The wettest day brought 6.02 inches of rain at Lowville on July 11, 2024. The biggest single-day snow measured 47.52 inches at Highmarket 2W on January 6, 1988. Those are station measurements from NOAA's daily records, 1891 to 2026, not official state records. By area the largest place is Croghan, about 179 square miles.
About Lewis County weather
The map on the Now tab shows every Lewis 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 20 Lewis County towns with station normals, the warmest month is July, when the day usually reaches 77°F, and the coldest is January, when the night usually falls to 8°F. January is the wettest, with rain on about 18 days. July afternoons run from about 75°F in Constableville to 81°F in Osceola. January nights run from about 2°F in Watson to 11°F in Osceola.
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.
Lewis County weather records
Measured at the NOAA stations serving these towns, daily records 1891 to 2026. Station extremes, not official state records.
Common questions about Lewis County weather
- What is the hottest temperature recorded at a Lewis County station?
- 100°F at Lowville on July 2, 1931, in the NOAA daily station records myweatherrock holds (1891 to 2026).
- What is the coldest temperature recorded at a Lewis County station?
- -52°F at Stillwater Rsvr on February 9, 1934.
- What is the most rain a Lewis County station has measured in one day?
- 6.02 inches at Lowville on July 11, 2024.
- What is the biggest one-day snowfall at a Lewis County station?
- 47.52 inches at Highmarket 2W on January 6, 1988.
- How many Lewis County towns have a weather page here?
- 21: 16 towns, 5 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 Lewis 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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