Nashua weather by month
What a typical year looks like in Nashua, New Hampshire: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Manchester Airport, 21 km from Nashua; records cover 1885–2026.
The year at a glance
- Precipitation a year
- 40.4 in1026 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 20
- First fall freeze
- Oct 18
- Heating degree days
- 6,170
- Cooling degree days
- 773
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 0°−18° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Nashua in January
Highs average 34°1° and lows 17°−8°, with 2.4 in62 mm of precipitation in a typical January.
- Record high
- 70°21° (2018)
- Record low
- −26°−32° (1887)
- Heating degree days
- 1221
- Cooling degree days
- 0
Nashua in February
Highs average 37°3° and lows 19°−7°, with 2.7 in69 mm of precipitation in a typical February.
- Record high
- 77°25° (2018)
- Record low
- −29°−34° (1943)
- Heating degree days
- 1030
- Cooling degree days
- 0
Nashua in March
Highs average 46°8° and lows 27°−3°, with 3.5 in88 mm of precipitation in a typical March.
- Record high
- 85°29° (2012)
- Record low
- −18°−28° (1948)
- Heating degree days
- 884
- Cooling degree days
- 0
Nashua in April
Highs average 59°15° and lows 38°3°, with 3.3 in85 mm of precipitation in a typical April.
- Record high
- 94°34° (2002)
- Record low
- 13°−11° (1954)
- Heating degree days
- 509
- Cooling degree days
- 5
Nashua in May
Highs average 70°21° and lows 48°9°, with 3.4 in86 mm of precipitation in a typical May.
- Record high
- 97°36° (2010)
- Record low
- 25°−4° (2002)
- Heating degree days
- 222
- Cooling degree days
- 33
Nashua in June
Highs average 79°26° and lows 58°14°, with 4 in103 mm of precipitation in a typical June.
- Record high
- 102°39° (2025)
- Record low
- 34°1° (1888)
- Heating degree days
- 46
- Cooling degree days
- 141
Nashua in July
Highs average 84°29° and lows 64°18°, with 3.3 in84 mm of precipitation in a typical July.
- Record high
- 103°39° (2011)
- Record low
- 36°2° (1937)
- Heating degree days
- 3
- Cooling degree days
- 278
Nashua in August
Highs average 82°28° and lows 62°17°, with 3.4 in85 mm of precipitation in a typical August.
- Record high
- 100°38° (1949)
- Record low
- 40°4° (1886)
- Heating degree days
- 7
- Cooling degree days
- 232
Nashua in September
Highs average 75°24° and lows 54°12°, with 3.7 in94 mm of precipitation in a typical September.
- Record high
- 100°38° (1953)
- Record low
- 28°−2° (1953)
- Heating degree days
- 98
- Cooling degree days
- 78
Nashua in OctoberThis month
Highs average 62°17° and lows 42°6°, with 3.9 in99 mm of precipitation in a typical October.
- Record high
- 88°31° (1971)
- Record low
- 13°−11° (1887)
- Heating degree days
- 402
- Cooling degree days
- 6
Nashua in November
Highs average 50°10° and lows 33°0°, with 3.5 in88 mm of precipitation in a typical November.
- Record high
- 80°27° (2024)
- Record low
- 4°−16° (1938)
- Heating degree days
- 706
- Cooling degree days
- 0
Nashua in December
Highs average 39°4° and lows 24°−5°, with 3.3 in84 mm of precipitation in a typical December.
- Record high
- 74°23° (1998)
- Record low
- −20°−29° (1933)
- Heating degree days
- 1042
- Cooling degree days
- 0