Cleghorn weather by month
What a typical year looks like in Cleghorn, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Cherokee, 16 km from Cleghorn; records cover 1921–2026.
The year at a glance
- Precipitation a year
- 31.2 in792 mm
- Snow a year
- 38 in96 cm
- Last spring freeze
- May 2
- First fall freeze
- Oct 1
- Heating degree days
- 7,405
- Cooling degree days
- 756
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −14°−26° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Cleghorn in January
Highs average 27°−3° and lows 7°−14°, with 0.65 in17 mm of precipitation and 8 in19 cm of snow in a typical January.
- Record high
- 67°19° (1981)
- Record low
- −35°−37° (1970)
- Heating degree days
- 1491
- Cooling degree days
- 0
Cleghorn in February
Highs average 32°0° and lows 11°−12°, with 0.78 in20 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 73°23° (2024)
- Record low
- −34°−37° (2021)
- Heating degree days
- 1221
- Cooling degree days
- 0
Cleghorn in March
Highs average 45°7° and lows 23°−5°, with 1.7 in42 mm of precipitation and 5 in13 cm of snow in a typical March.
- Record high
- 90°32° (2026)
- Record low
- −23°−31° (1960)
- Heating degree days
- 962
- Cooling degree days
- 0
Cleghorn in April
Highs average 59°15° and lows 34°1°, with 3.2 in81 mm of precipitation and 2.7 in6.9 cm of snow in a typical April.
- Record high
- 94°34° (1980)
- Record low
- −8°−22° (1975)
- Heating degree days
- 555
- Cooling degree days
- 5
Cleghorn in May
Highs average 71°21° and lows 47°8°, with 4.3 in109 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 106°41° (1934)
- Record low
- 21°−6° (1961)
- Heating degree days
- 241
- Cooling degree days
- 46
Cleghorn in June
Highs average 81°27° and lows 58°14°, with 5.2 in132 mm of precipitation in a typical June.
- Record high
- 103°39° (1933)
- Record low
- 34°1° (1945)
- Heating degree days
- 36
- Cooling degree days
- 168
Cleghorn in July
Highs average 84°29° and lows 62°17°, with 3.4 in86 mm of precipitation in a typical July.
- Record high
- 108°42° (1936)
- Record low
- 40°4° (1972)
- Heating degree days
- 8
- Cooling degree days
- 262
Cleghorn in August
Highs average 82°28° and lows 59°15°, with 4.1 in105 mm of precipitation in a typical August.
- Record high
- 109°43° (1930)
- Record low
- 34°1° (1950)
- Heating degree days
- 18
- Cooling degree days
- 193
Cleghorn in September
Highs average 75°24° and lows 50°10°, with 3.3 in84 mm of precipitation in a typical September.
- Record high
- 101°38° (1976)
- Record low
- 19°−7° (1942)
- Heating degree days
- 146
- Cooling degree days
- 74
Cleghorn in OctoberThis month
Highs average 62°17° and lows 36°2°, with 2.3 in57 mm of precipitation and 0.5 in1.3 cm of snow in a typical October.
- Record high
- 94°34° (1963)
- Record low
- −5°−21° (1925)
- Heating degree days
- 497
- Cooling degree days
- 8
Cleghorn in November
Highs average 46°8° and lows 24°−4°, with 1.5 in37 mm of precipitation and 4 in10 cm of snow in a typical November.
- Record high
- 80°27° (1953)
- Record low
- −17°−27° (1959)
- Heating degree days
- 908
- Cooling degree days
- 0
Cleghorn in December
Highs average 32°0° and lows 13°−11°, with 0.93 in24 mm of precipitation and 9 in24 cm of snow in a typical December.
- Record high
- 68°20° (1998)
- Record low
- −27°−33° (1924)
- Heating degree days
- 1322
- Cooling degree days
- 0