30-year climate normals

Addison County Climate and Weather Averages

Hottest month — July

80.4°

average daily high. The coldest month is January, averaging a low of 9.2°F.

Addison County gets 38.67" of precipitation a year and 58.6" of snow, and 31% of it falls in Jun, Jul, Aug.

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	Snow
January	27.1°	9.2°	2.55"	13.3"
February	30.3°	10.3°	2.07"	13.3"
March	39.5°	20.1°	2.42"	11.9"
April	53.6°	32.7°	3.35"	2.6"
May	67.0°	45.0°	3.37"	0.0"
June	75.5°	54.5°	4.21"	0.0"
July	80.4°	59.6°	4.09"	0.0"
August	78.6°	57.0°	3.53"	0.0"
September	71.3°	49.1°	3.25"	0.0"
October	57.4°	38.0°	3.96"	0.3"
November	44.3°	28.4°	2.85"	3.8"
December	33.0°	17.5°	3.02"	13.4"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 31% falling in the wettest three months (Jun, Jul, Aug).

January 2.55"

February 2.07"

March 2.42"

April 3.35"

May 3.37"

June 4.21"

July 4.09"

August 3.53"

September 3.25"

October 3.96"

November 2.85"

December 3.02"

Annual total 38.67"

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 446

Heating degree days How much heating the climate demands 7,705

Approximate annual cooling cost At 24.89¢/kWh, Vermont average $111

Approximate annual electric heating cost Lower where heating is gas rather than electric $671

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 Addison County, where electricity is one line of eight.

Common questions

What is the weather like in Addison County?

Addison County averages a high of 80.4°F in July and a low of 9.2°F in January. Annual precipitation is 38.67 inches, including 58.6 inches of snow.

When is the rainy season in Addison County?

The wettest stretch is Jun, Jul, Aug, which accounts for 31% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Addison County?

The average daily high in July, the hottest month, is 80.4°F. That drives 446 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Addison County?

Yes. Addison County averages 58.6 inches of snow a year.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CORNWALL, VT US (USC00431580), 6.2 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.