30-year climate normals

Windham County Climate and Weather Averages

Hottest month — July

81.4°

average daily high. The coldest month is January, averaging a low of 11.2°F.

Windham County gets 40.33" 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	29.8°	11.2°	2.80"
February	33.1°	12.8°	2.23"
March	41.9°	21.2°	2.98"
April	55.7°	31.9°	3.35"
May	68.1°	43.0°	3.49"
June	76.3°	52.1°	3.78"
July	81.4°	57.2°	3.86"
August	79.7°	55.4°	3.56"
September	71.8°	47.8°	3.61"
October	58.7°	36.7°	4.16"
November	46.3°	27.7°	3.34"
December	35.0°	18.4°	3.17"

Rainfall by month

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

January 2.80"

February 2.23"

March 2.98"

April 3.35"

May 3.49"

June 3.78"

July 3.86"

August 3.56"

September 3.61"

October 4.16"

November 3.34"

December 3.17"

Annual total 40.33"

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 377

Heating degree days How much heating the climate demands 7,431

Approximate annual cooling cost At 24.89¢/kWh, Vermont average $94

Approximate annual electric heating cost Lower where heating is gas rather than electric $647

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 Windham County, where electricity is one line of eight.

Common questions

What is the weather like in Windham County?

Windham County averages a high of 81.4°F in July and a low of 11.2°F in January. Annual precipitation is 40.33 inches, with essentially no snow.

When is the rainy season in Windham County?

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 Windham County?

The average daily high in July, the hottest month, is 81.4°F. That drives 377 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Windham County?

Effectively no. Measurable snowfall is rare in Windham County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station SPRINGFIELD HARTNESS AP, VT US (USW00054740), 26.2 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, Vermont residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.