Colebrook weather by month
What a typical year looks like in Colebrook, New Hampshire: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Colebrook 3sw, 5 km from Colebrook; records cover 1960–2026.
The year at a glance
- Precipitation a year
- 41.3 in1048 mm
- Snow a year
- 81 in207 cm
- Last spring freeze
- May 27
- First fall freeze
- Sep 20
- Heating degree days
- 9,336
- Cooling degree days
- 147
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −22°−30° (heating, 99%) and 87°31° (cooling, 1%).
Month by month
Colebrook in January
Highs average 24°−4° and lows 0°−18°, with 2.7 in69 mm of precipitation and 18 in46 cm of snow in a typical January.
- Record high
- 61°16° (1996)
- Record low
- −40° (1968)
- Heating degree days
- 1634
- Cooling degree days
- 0
Colebrook in February
Highs average 27°−3° and lows 0°−18°, with 2 in52 mm of precipitation and 20 in51 cm of snow in a typical February.
- Record high
- 63°17° (2000)
- Record low
- −42°−41° (1962)
- Heating degree days
- 1439
- Cooling degree days
- 0
Colebrook in March
Highs average 36°2° and lows 11°−12°, with 2.5 in63 mm of precipitation and 15 in37 cm of snow in a typical March.
- Record high
- 79°26° (1998)
- Record low
- −29°−34° (1980)
- Heating degree days
- 1280
- Cooling degree days
- 0
Colebrook in April
Highs average 50°10° and lows 26°−4°, with 2.9 in73 mm of precipitation and 3 in9 cm of snow in a typical April.
- Record high
- 86°30° (1976)
- Record low
- −8°−22° (1969)
- Heating degree days
- 815
- Cooling degree days
- 0
Colebrook in May
Highs average 64°18° and lows 37°3°, with 4 in101 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 91°33° (2020)
- Record low
- 17°−8° (1968)
- Heating degree days
- 447
- Cooling degree days
- 4
Colebrook in June
Highs average 72°22° and lows 47°9°, with 4.7 in119 mm of precipitation in a typical June.
- Record high
- 94°34° (2003)
- Record low
- 27°−3° (1971)
- Heating degree days
- 183
- Cooling degree days
- 30
Colebrook in July
Highs average 77°25° and lows 52°11°, with 4.3 in108 mm of precipitation in a typical July.
- Record high
- 94°34° (1979)
- Record low
- 31°−1° (1969)
- Heating degree days
- 71
- Cooling degree days
- 61
Colebrook in August
Highs average 76°24° and lows 50°10°, with 4.2 in107 mm of precipitation in a typical August.
- Record high
- 95°35° (1975)
- Record low
- 29°−2° (1976)
- Heating degree days
- 105
- Cooling degree days
- 40
Colebrook in September
Highs average 68°20° and lows 43°6°, with 3.4 in86 mm of precipitation in a typical September.
- Record high
- 94°34° (1999)
- Record low
- 18°−8° (1980)
- Heating degree days
- 294
- Cooling degree days
- 12
Colebrook in OctoberThis month
Highs average 55°13° and lows 32°0°, with 4.4 in112 mm of precipitation and 0.9 in2.3 cm of snow in a typical October.
- Record high
- 83°28° (2023)
- Record low
- 7°−14° (1972)
- Heating degree days
- 671
- Cooling degree days
- 0
Colebrook in November
Highs average 42°5° and lows 22°−6°, with 3.1 in80 mm of precipitation and 6 in15 cm of snow in a typical November.
- Record high
- 73°23° (2024)
- Record low
- −13°−25° (1989)
- Heating degree days
- 1002
- Cooling degree days
- 0
Colebrook in December
Highs average 30°−1° and lows 10°−12°, with 3.1 in79 mm of precipitation and 19 in47 cm of snow in a typical December.
- Record high
- 65°18° (1964)
- Record low
- −38°−39° (1980)
- Heating degree days
- 1395
- Cooling degree days
- 0