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United States › Massachusetts › Hampden County › Climate Station WESTFIELD BARNES MUNI AP, MA US Distance 4.4 mi Normals 1991–2020

30-year climate normals

Hampden County Climate and Weather Averages

Hottest month — July

84.9°

average daily high. The coldest month is January, averaging a low of 15.5°F.

Hampden County gets 45.16" of precipitation a year, and 29% 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.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 34.8° 15.5° 2.75"
February 37.9° 17.3° 2.60"
March 46.6° 25.7° 3.43"
April 60.3° 35.4° 4.06"
May 71.6° 46.2° 3.71"
June 79.7° 55.1° 4.37"
July 84.9° 60.9° 4.15"
August 82.9° 59.1° 3.72"
September 75.3° 50.9° 4.60"
October 63.0° 39.4° 4.72"
November 50.8° 30.2° 3.47"
December 39.8° 22.1° 3.58"

Rainfall by month

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

January 2.75"
February 2.60"
March 3.43"
April 4.06"
May 3.71"
June 4.37"
July 4.15"
August 3.72"
September 4.60"
October 4.72"
November 3.47"
December 3.58"
Annual total 45.16"

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 677
Heating degree days How much heating the climate demands 6,330
Approximate annual cooling cost At 28.82¢/kWh, Massachusetts average $195
Approximate annual electric heating cost Lower where heating is gas rather than electric $639

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 Hampden County, where electricity is one line of eight.

Common questions

What is the weather like in Hampden County?

Hampden County averages a high of 84.9°F in July and a low of 15.5°F in January. Annual precipitation is 45.16 inches, with essentially no snow.

When is the rainy season in Hampden County?

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

How hot does it get in Hampden County?

The average daily high in July, the hottest month, is 84.9°F. That drives 677 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Hampden County?

Effectively no. Measurable snowfall is rare in Hampden County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station WESTFIELD BARNES MUNI AP, MA US (USW00014775), 4.4 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.