Alleghany weather by month
What a typical year looks like in Alleghany, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Blue Canyon Nyack Airport, 24 km from Alleghany; records cover 1943–2026.
The year at a glance
- Precipitation a year
- 62.4 in1586 mm
- Snow a year
- Rare
- Last spring freeze
- May 16
- First fall freeze
- Oct 30
- Heating degree days
- 5,214
- Cooling degree days
- 552
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 20°−7° (heating, 99%) and 87°31° (cooling, 1%).
Month by month
Alleghany in January
Highs average 47°8° and lows 34°1°, with 10.6 in268 mm of precipitation in a typical January.
- Record high
- 76°24° (2013)
- Record low
- 5°−15° (1949)
- Heating degree days
- 761
- Cooling degree days
- 0
Alleghany in February
Highs average 45°7° and lows 33°1°, with 10.1 in256 mm of precipitation in a typical February.
- Record high
- 73°23° (1954)
- Record low
- 6°−14° (1949)
- Heating degree days
- 726
- Cooling degree days
- 0
Alleghany in March
Highs average 48°9° and lows 35°2°, with 9 in227 mm of precipitation in a typical March.
- Record high
- 78°26° (2026)
- Record low
- 9°−13° (1956)
- Heating degree days
- 730
- Cooling degree days
- 0
Alleghany in April
Highs average 52°11° and lows 38°3°, with 5.1 in130 mm of precipitation in a typical April.
- Record high
- 82°28° (1985)
- Record low
- 17°−8° (1955)
- Heating degree days
- 608
- Cooling degree days
- 0
Alleghany in May
Highs average 61°16° and lows 46°8°, with 4.1 in104 mm of precipitation in a typical May.
- Record high
- 88°31° (1984)
- Record low
- 21°−6° (1950)
- Heating degree days
- 384
- Cooling degree days
- 15
Alleghany in June
Highs average 70°21° and lows 54°12°, with 1.1 in29 mm of precipitation in a typical June.
- Record high
- 92°33° (1950)
- Record low
- 28°−2° (1950)
- Heating degree days
- 148
- Cooling degree days
- 61
Alleghany in July
Highs average 78°25° and lows 63°17°, with 0.04 in1 mm of precipitation in a typical July.
- Record high
- 95°35° (1972)
- Record low
- 36°2° (1987)
- Heating degree days
- 20
- Cooling degree days
- 182
Alleghany in August
Highs average 77°25° and lows 62°17°, with 0.2 in5.1 mm of precipitation in a typical August.
- Record high
- 97°36° (1978)
- Record low
- 35°2° (1964)
- Heating degree days
- 22
- Cooling degree days
- 170
Alleghany in September
Highs average 73°23° and lows 57°14°, with 0.59 in15 mm of precipitation in a typical September.
- Record high
- 96°36° (2022)
- Record low
- 27°−3° (1971)
- Heating degree days
- 102
- Cooling degree days
- 103
Alleghany in OctoberThis month
Highs average 63°17° and lows 48°9°, with 3.6 in91 mm of precipitation in a typical October.
- Record high
- 88°31° (1980)
- Record low
- 17°−8° (1971)
- Heating degree days
- 315
- Cooling degree days
- 20
Alleghany in November
Highs average 51°11° and lows 39°4°, with 7.2 in183 mm of precipitation in a typical November.
- Record high
- 78°26° (1949)
- Record low
- 13°−11° (1945)
- Heating degree days
- 598
- Cooling degree days
- 1
Alleghany in December
Highs average 45°7° and lows 34°1°, with 10.9 in277 mm of precipitation in a typical December.
- Record high
- 75°24° (1958)
- Record low
- 3°−16° (1972)
- Heating degree days
- 800
- Cooling degree days
- 0