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United States › New Hampshire › Rockingham County › Climate Station EPPING, NH US Distance 3 mi Normals 1991–2020

30-year climate normals

Rockingham County Climate and Weather Averages

Hottest month — July

82.0°

average daily high. The coldest month is January, averaging a low of 14.3°F.

Rockingham County gets 46.3" of precipitation a year and 56.6" of snow, and 27% 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.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 32.7° 14.3° 3.15" 15.2"
February 35.5° 15.8° 3.27" 13.9"
March 43.9° 24.0° 4.23" 9.9"
April 56.8° 34.0° 4.24" 2.8"
May 67.7° 44.4° 3.76" 0.0"
June 76.4° 53.8° 4.00" 0.0"
July 82.0° 59.4° 3.46" 0.0"
August 80.8° 57.4° 3.53" 0.0"
September 73.1° 49.8° 3.96" 0.0"
October 60.7° 38.4° 4.68" 0.1"
November 48.9° 29.9° 3.74" 1.6"
December 37.9° 20.9° 4.28" 13.1"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 27% falling in the wettest three months (Oct, Nov, Dec).

January 3.15"
February 3.27"
March 4.23"
April 4.24"
May 3.76"
June 4.00"
July 3.46"
August 3.53"
September 3.96"
October 4.68"
November 3.74"
December 4.28"
Annual total 46.3"

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 499
Heating degree days How much heating the climate demands 6,865
Approximate annual cooling cost At 27.33¢/kWh, New Hampshire average $136
Approximate annual electric heating cost Lower where heating is gas rather than electric $657

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 Rockingham County, where electricity is one line of eight.

Common questions

What is the weather like in Rockingham County?

Rockingham County averages a high of 82.0°F in July and a low of 14.3°F in January. Annual precipitation is 46.3 inches, including 56.6 inches of snow.

When is the rainy season in Rockingham County?

The wettest stretch is Oct, Nov, Dec, which accounts for 27% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Rockingham County?

The average daily high in July, the hottest month, is 82.0°F. That drives 499 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Rockingham County?

Yes. Rockingham County averages 56.6 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station EPPING, NH US (USC00272800), 3 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, New Hampshire residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.