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United States › New York › St. Lawrence County › Climate Station CANTON 4 SE, NY US Distance 6.4 mi Normals 1991–2020

30-year climate normals

St. Lawrence County Climate and Weather Averages

Hottest month — July

79.6°

average daily high. The coldest month is January, averaging a low of 6.6°F.

St. Lawrence County gets 38.19" of precipitation a year and 77.3" of snow, and 32% of it falls in Aug, Sep, Oct.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

20° 40° 60° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 26.9° 6.6° 2.23" 18.9"
February 29.9° 8.4° 1.99" 17.5"
March 38.9° 19.0° 2.29" 12.5"
April 53.3° 32.5° 3.05" 3.5"
May 66.7° 45.2° 3.15" 0.0"
June 75.2° 54.6° 3.82" 0.0"
July 79.6° 59.2° 3.92" 0.0"
August 78.0° 56.7° 3.41" 0.0"
September 70.8° 48.8° 3.94" 0.0"
October 57.8° 38.2° 4.85" 0.2"
November 45.3° 28.2° 2.91" 5.1"
December 33.5° 16.0° 2.63" 19.6"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 32% falling in the wettest three months (Aug, Sep, Oct).

January 2.23"
February 1.99"
March 2.29"
April 3.05"
May 3.15"
June 3.82"
July 3.92"
August 3.41"
September 3.94"
October 4.85"
November 2.91"
December 2.63"
Annual total 38.19"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 431
Heating degree days How much heating the climate demands 7,844
Approximate annual cooling cost At 29.93¢/kWh, New York average $129
Approximate annual electric heating cost Lower where heating is gas rather than electric $822

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in St. Lawrence County, where electricity is one line of eight.

Common questions

What is the weather like in St. Lawrence County?

St. Lawrence County averages a high of 79.6°F in July and a low of 6.6°F in January. Annual precipitation is 38.19 inches, including 77.3 inches of snow.

When is the rainy season in St. Lawrence County?

The wettest stretch is Aug, Sep, Oct, which accounts for 32% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in St. Lawrence County?

The average daily high in July, the hottest month, is 79.6°F. That drives 431 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in St. Lawrence County?

Yes. St. Lawrence County averages 77.3 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CANTON 4 SE, NY US (USW00014743), 6.4 miles from the county centroid.
  • Heating and cooling degree days — NOAA, same station and period.
  • Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, New York residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.