St. Lawrence County weather, town by town
44 places in St. Lawrence 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 1893 to 2026. Station extremes, not official state records.
St. Lawrence County Weather Facts
St. Lawrence County has 44 places on myweatherrock (32 towns, 7 census-designated places, 4 villages, 1 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 102°F at Colton 2 N on August 1, 1936. The coldest night is -52°F at Stillwater Rsvr on February 9, 1934. The wettest day brought 6.43 inches of rain at Stillwater Rsvr on July 11, 2024. The biggest single-day snow measured 30.98 inches at Stillwater Rsvr on January 22, 1940. Those are station measurements from NOAA's daily records, 1893 to 2026, not official state records. By area the largest place is Colton, about 242 square miles.
About St. Lawrence County weather
The map on the Now tab shows every St. Lawrence 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 44 St. Lawrence County towns with station normals, the warmest month is July, when the day usually reaches 80°F, and the coldest is January, when the night usually falls to 6°F. December is the wettest, with rain on about 14 days. July afternoons run from about 75°F in Fine to 82°F in Clare. January nights run from about 2°F in Fine to 12°F in Hammond.
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.
St. Lawrence 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 St. Lawrence County weather
- What is the hottest temperature recorded at a St. Lawrence County station?
- 102°F at Colton 2 N on August 1, 1936, in the NOAA daily station records myweatherrock holds (1893 to 2026).
- What is the coldest temperature recorded at a St. Lawrence County station?
- -52°F at Stillwater Rsvr on February 9, 1934.
- What is the most rain a St. Lawrence County station has measured in one day?
- 6.43 inches at Stillwater Rsvr on July 11, 2024.
- What is the biggest one-day snowfall at a St. Lawrence County station?
- 30.98 inches at Stillwater Rsvr on January 22, 1940.
- How many St. Lawrence County towns have a weather page here?
- 44: 32 towns, 7 census-designated places, 4 villages, 1 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 St. Lawrence 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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