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United States › Connecticut › Southeastern Connecticut Planning Region › Climate Station NORWICH PUBLIC UTILITY PLT, CT US Distance 3.5 mi Normals 1991–2020

30-year climate normals

Southeastern Connecticut Planning Region Climate and Weather Averages

Hottest month — July

84.1°

average daily high. The coldest month is January, averaging a low of 21.2°F.

Southeastern Connecticut Planning Region gets 52.18" of precipitation a year and 27.8" of snow, and 27% 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.

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 37.7° 21.2° 3.89" 9.0"
February 40.5° 22.9° 3.75" 7.1"
March 47.8° 29.4° 5.09" 5.0"
April 59.3° 39.1° 4.71" 0.8"
May 69.9° 48.9° 3.64" 0.0"
June 78.4° 58.5° 4.27" 0.0"
July 84.1° 64.8° 3.63" 0.0"
August 82.6° 62.7° 4.41" 0.0"
September 75.5° 54.9° 4.79" 0.0"
October 63.9° 43.6° 4.86" 0.0"
November 53.0° 34.3° 4.17" 0.3"
December 43.2° 27.0° 4.97" 5.6"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 27% falling in the wettest three months (Aug, Sep, Oct).

January 3.89"
February 3.75"
March 5.09"
April 4.71"
May 3.64"
June 4.27"
July 3.63"
August 4.41"
September 4.79"
October 4.86"
November 4.17"
December 4.97"
Annual total 52.18"

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 802
Heating degree days How much heating the climate demands 5,579
Approximate annual cooling cost At 27.37¢/kWh, Connecticut average $220
Approximate annual electric heating cost Lower where heating is gas rather than electric $534

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 Southeastern Connecticut Planning Region, where electricity is one line of eight.

Common questions

What is the weather like in Southeastern Connecticut Planning Region?

Southeastern Connecticut Planning Region averages a high of 84.1°F in July and a low of 21.2°F in January. Annual precipitation is 52.18 inches, including 27.8 inches of snow.

When is the rainy season in Southeastern Connecticut Planning Region?

The wettest stretch is Aug, Sep, Oct, which accounts for 27% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Southeastern Connecticut Planning Region?

The average daily high in July, the hottest month, is 84.1°F. That drives 802 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Southeastern Connecticut Planning Region?

Yes. Southeastern Connecticut Planning Region averages 27.8 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station NORWICH PUBLIC UTILITY PLT, CT US (USC00065910), 3.5 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, Connecticut residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.