Cost to Own
United States › New Hampshire › Hillsborough County › Climate Station MILFORD, NH US Distance 6.2 mi Normals 1991 to 2020
This weather has a price Keeping the median Hillsborough County home comfortable runs roughly $781 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Hillsborough County Climate and Weather Averages

Hottest month: July

83.4°

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

Hillsborough County gets 46.04" of precipitation a year and 57.4" of snow, 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.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 33.2° 14.3° 3.03" 15.4"
February 36.2° 14.9° 2.99" 11.5"
March 44.6° 23.5° 3.79" 14.4"
April 58.3° 34.3° 4.15" 2.3"
May 69.2° 44.9° 3.35" 0.0"
June 77.5° 54.8° 4.03" 0.0"
July 83.4° 60.1° 3.73" 0.0"
August 81.2° 57.6° 3.68" 0.0"
September 72.7° 50.0° 4.04" 0.0"
October 60.4° 37.7° 4.88" 0.1"
November 48.9° 28.4° 3.92" 1.1"
December 38.1° 20.0° 4.45" 12.6"

Rainfall by month

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

January 3.03"
February 2.99"
March 3.79"
April 4.15"
May 3.35"
June 4.03"
July 3.73"
August 3.68"
September 4.04"
October 4.88"
November 3.92"
December 4.45"
Annual total 46.04"

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 546
Heating degree days How much heating the climate demands 6,825
Approximate annual cooling cost At 26.6¢/kWh, New Hampshire average $145
Approximate annual electric heating cost Lower where heating is gas rather than electric $635

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 Hillsborough County, where electricity is one line of eight.

Common questions

What is the weather like in Hillsborough County?

Hillsborough County averages a high of 83.4°F in July and a low of 14.3°F in January. Annual precipitation is 46.04 inches, including 57.4 inches of snow.

When is the rainy season in Hillsborough 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 Hillsborough County?

The average daily high in July, the hottest month, is 83.4°F. That drives 546 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Hillsborough County?

Yes. Hillsborough County averages 57.4 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station MILFORD, NH US (USC00275412), 6.2 miles from the county centroid.
  • Heating and cooling degree days: NOAA, same station and period.
  • Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
  • 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.