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United States › Massachusetts › Dukes County › Climate Station VINEYARD HAVEN AP, MA US Distance 4.6 mi Normals 1991–2020

30-year climate normals

Dukes County Climate and Weather Averages

Hottest month — July

79.1°

average daily high. The coldest month is February, averaging a low of 23.3°F.

Dukes County gets 42.14" of precipitation a year, and 29% of it falls in Oct, Nov, Dec.

Temperature through the year

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

40° 60° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 39.3° 23.4° 3.31"
February 40.4° 23.3° 2.63"
March 45.5° 28.7° 3.95"
April 55.2° 36.3° 3.67"
May 65.0° 45.8° 3.26"
June 72.8° 54.6° 3.17"
July 79.1° 61.2° 2.80"
August 78.8° 59.8° 3.40"
September 72.8° 52.1° 3.79"
October 63.2° 43.4° 4.37"
November 53.7° 36.0° 3.96"
December 45.2° 28.7° 3.83"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 29% falling in the wettest three months (Oct, Nov, Dec).

January 3.31"
February 2.63"
March 3.95"
April 3.67"
May 3.26"
June 3.17"
July 2.80"
August 3.40"
September 3.79"
October 4.37"
November 3.96"
December 3.83"
Annual total 42.14"

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 449
Heating degree days How much heating the climate demands 5,819
Approximate annual cooling cost At 28.82¢/kWh, Massachusetts average $129
Approximate annual electric heating cost Lower where heating is gas rather than electric $587

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 Dukes County, where electricity is one line of eight.

Common questions

What is the weather like in Dukes County?

Dukes County averages a high of 79.1°F in July and a low of 23.3°F in February. Annual precipitation is 42.14 inches, with essentially no snow.

When is the rainy season in Dukes County?

The wettest stretch is Oct, Nov, Dec, which accounts for 29% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Dukes County?

The average daily high in July, the hottest month, is 79.1°F. That drives 449 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Dukes County?

Effectively no. Measurable snowfall is rare in Dukes County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station VINEYARD HAVEN AP, MA US (USW00094724), 4.6 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, Massachusetts residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.