Nashua weather by month
What a typical year looks like in Nashua, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Charles City, 16 km from Nashua; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 37.7 in958 mm
- Snow a year
- 38 in95 cm
- Last spring freeze
- Apr 29
- First fall freeze
- Oct 3
- Heating degree days
- 7,355
- Cooling degree days
- 652
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −13°−25° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Nashua in January
Highs average 25°−4° and lows 9°−13°, with 1 in26 mm of precipitation and 10 in24 cm of snow in a typical January.
- Record high
- 63°17° (2002)
- Record low
- −34°−37° (1912)
- Heating degree days
- 1500
- Cooling degree days
- 0
Nashua in February
Highs average 30°−1° and lows 13°−11°, with 1.1 in29 mm of precipitation and 9 in24 cm of snow in a typical February.
- Record high
- 75°24° (2024)
- Record low
- −32°−36° (1996)
- Heating degree days
- 1230
- Cooling degree days
- 0
Nashua in March
Highs average 43°6° and lows 25°−4°, with 1.9 in49 mm of precipitation and 5 in14 cm of snow in a typical March.
- Record high
- 86°30° (1895)
- Record low
- −32°−36° (1962)
- Heating degree days
- 955
- Cooling degree days
- 0
Nashua in April
Highs average 58°15° and lows 37°3°, with 3.7 in95 mm of precipitation and 2.1 in5.3 cm of snow in a typical April.
- Record high
- 94°34° (1980)
- Record low
- 3°−16° (1982)
- Heating degree days
- 532
- Cooling degree days
- 4
Nashua in May
Highs average 70°21° and lows 49°9°, with 5.1 in129 mm of precipitation and 0.3 in0.8 cm of snow in a typical May.
- Record high
- 104°40° (1934)
- Record low
- 20°−7° (1907)
- Heating degree days
- 226
- Cooling degree days
- 40
Nashua in June
Highs average 79°26° and lows 59°15°, with 6.1 in156 mm of precipitation in a typical June.
- Record high
- 105°41° (1934)
- Record low
- 34°1° (1903)
- Heating degree days
- 36
- Cooling degree days
- 147
Nashua in July
Highs average 82°28° and lows 62°17°, with 4.9 in125 mm of precipitation in a typical July.
- Record high
- 108°42° (1901)
- Record low
- 39°4° (1899)
- Heating degree days
- 8
- Cooling degree days
- 227
Nashua in August
Highs average 80°26° and lows 60°15°, with 4.3 in109 mm of precipitation in a typical August.
- Record high
- 104°40° (1988)
- Record low
- 34°1° (1915)
- Heating degree days
- 20
- Cooling degree days
- 164
Nashua in September
Highs average 73°23° and lows 51°11°, with 3.8 in97 mm of precipitation in a typical September.
- Record high
- 100°38° (1939)
- Record low
- 19°−7° (1899)
- Heating degree days
- 144
- Cooling degree days
- 64
Nashua in OctoberThis month
Highs average 60°16° and lows 39°4°, with 2.6 in66 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 95°35° (1963)
- Record low
- 1°−17° (1925)
- Heating degree days
- 485
- Cooling degree days
- 6
Nashua in November
Highs average 44°7° and lows 26°−3°, with 1.7 in44 mm of precipitation and 2.8 in7.1 cm of snow in a typical November.
- Record high
- 78°26° (1933)
- Record low
- −14°−26° (1977)
- Heating degree days
- 900
- Cooling degree days
- 0
Nashua in December
Highs average 30°−1° and lows 15°−9°, with 1.4 in35 mm of precipitation and 8 in20 cm of snow in a typical December.
- Record high
- 68°20° (2021)
- Record low
- −29°−34° (2000)
- Heating degree days
- 1319
- Cooling degree days
- 0