Alturas weather by month
What a typical year looks like in Alturas, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Alturas Municipal Airport, 1 km from Alturas; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 11.7 in297 mm
- Snow a year
- Rare
- Last spring freeze
- Jun 12
- First fall freeze
- Sep 6
- Heating degree days
- 6,557
- Cooling degree days
- 235
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 98°37° (cooling, 1%).
Month by month
Alturas in January
Highs average 43°6° and lows 21°−6°, with 1.3 in33 mm of precipitation in a typical January.
- Record high
- 68°20° (2015)
- Record low
- −23°−31° (2017)
- Heating degree days
- 1029
- Cooling degree days
- 0
Alturas in February
Highs average 47°8° and lows 23°−5°, with 1.1 in28 mm of precipitation in a typical February.
- Record high
- 68°20° (2025)
- Record low
- −10°−23° (2011)
- Heating degree days
- 846
- Cooling degree days
- 0
Alturas in March
Highs average 53°12° and lows 27°−3°, with 1.4 in35 mm of precipitation in a typical March.
- Record high
- 82°28° (2026)
- Record low
- −6°−21° (2002)
- Heating degree days
- 788
- Cooling degree days
- 0
Alturas in April
Highs average 58°15° and lows 30°−1°, with 1.5 in37 mm of precipitation in a typical April.
- Record high
- 84°29° (2012)
- Record low
- 10°−12° (2009)
- Heating degree days
- 622
- Cooling degree days
- 0
Alturas in May
Highs average 68°20° and lows 37°3°, with 1.3 in32 mm of precipitation in a typical May.
- Record high
- 93°34° (2001)
- Record low
- 14°−10° (2010)
- Heating degree days
- 387
- Cooling degree days
- 1
Alturas in June
Highs average 78°26° and lows 42°6°, with 0.7 in18 mm of precipitation in a typical June.
- Record high
- 105°41° (2021)
- Record low
- 22°−6° (2001)
- Heating degree days
- 169
- Cooling degree days
- 25
Alturas in July
Highs average 89°32° and lows 47°8°, with 0.29 in7.4 mm of precipitation in a typical July.
- Record high
- 107°42° (2002)
- Record low
- 31°−1° (2016)
- Heating degree days
- 25
- Cooling degree days
- 123
Alturas in August
Highs average 87°31° and lows 44°7°, with 0.27 in6.9 mm of precipitation in a typical August.
- Record high
- 102°39° (2018)
- Record low
- 28°−2° (1999)
- Heating degree days
- 50
- Cooling degree days
- 73
Alturas in September
Highs average 80°27° and lows 37°3°, with 0.35 in8.9 mm of precipitation in a typical September.
- Record high
- 102°39° (2020)
- Record low
- 21°−6° (2000)
- Heating degree days
- 210
- Cooling degree days
- 13
Alturas in OctoberThis month
Highs average 66°19° and lows 29°−1°, with 0.89 in23 mm of precipitation in a typical October.
- Record high
- 91°33° (2010)
- Record low
- 0°−18° (2002)
- Heating degree days
- 542
- Cooling degree days
- 0
Alturas in November
Highs average 51°10° and lows 25°−4°, with 1.2 in30 mm of precipitation in a typical November.
- Record high
- 78°26° (2020)
- Record low
- −6°−21° (2015)
- Heating degree days
- 820
- Cooling degree days
- 0
Alturas in December
Highs average 41°5° and lows 20°−7°, with 1.5 in37 mm of precipitation in a typical December.
- Record high
- 66°19° (2021)
- Record low
- −27°−33° (2013)
- Heating degree days
- 1069
- Cooling degree days
- 0