This weather has a price Keeping the median Northeastern Connecticut Planning Region home comfortable runs roughly $676 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Northeastern Connecticut Planning Region Climate and Weather Averages

Hottest month: July

82.8°

average daily high. The coldest month is January, averaging a low of 18.1°F.

Northeastern Connecticut Planning Region gets 43.25" of precipitation a year, and 28% 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.

Month	Avg high	Avg low	Precip
January	36.2°	18.1°	3.20"
February	38.8°	19.4°	2.66"
March	47.0°	27.0°	3.95"
April	59.2°	36.7°	3.97"
May	70.0°	46.9°	3.40"
June	77.9°	56.1°	3.87"
July	82.8°	61.9°	2.66"
August	81.0°	60.3°	4.37"
September	74.3°	52.4°	4.11"
October	62.8°	40.8°	3.83"
November	51.6°	31.4°	3.55"
December	41.3°	23.8°	3.68"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 28% falling in the wettest three months (Aug, Sep, Oct).

January 3.20"

February 2.66"

March 3.95"

April 3.97"

May 3.40"

June 3.87"

July 2.66"

August 4.37"

September 4.11"

October 3.83"

November 3.55"

December 3.68"

Annual total 43.25"

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 626

Heating degree days How much heating the climate demands 6,094

Approximate annual cooling cost At 24.51¢/kWh, Connecticut average $153

Approximate annual electric heating cost Lower where heating is gas rather than electric $523

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

Common questions

What is the weather like in Northeastern Connecticut Planning Region?

Northeastern Connecticut Planning Region averages a high of 82.8°F in July and a low of 18.1°F in January. Annual precipitation is 43.25 inches, with essentially no snow.

When is the rainy season in Northeastern Connecticut Planning Region?

The wettest stretch is Aug, Sep, Oct, which accounts for 28% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Northeastern Connecticut Planning Region?

The average daily high in July, the hottest month, is 82.8°F. That drives 626 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Northeastern Connecticut Planning Region?

The weather station used for Northeastern Connecticut Planning Region, WILLIMANTIC WINDHAM AP, CT US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 43.25 inches above, measured as melted water.

Sources

Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station WILLIMANTIC WINDHAM AP, CT US (USW00054767), 12.9 miles from the county centroid.
Heating and cooling degree days: NOAA, same station and period.
Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
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.