Barstow weather by month
What a typical year looks like in Barstow, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Barstow-Daggett Airport, 23 km from Barstow; records cover 1943–2026.
The year at a glance
- Precipitation a year
- 3.8 in96 mm
- Snow a year
- 0.2 in0.5 cm
- Last spring freeze
- Feb 22
- First fall freeze
- Nov 24
- Heating degree days
- 2,019
- Cooling degree days
- 3,128
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 26°−3° (heating, 99%) and 112°44° (cooling, 1%).
Month by month
Barstow in January
Highs average 61°16° and lows 36°2°, with 0.57 in14 mm of precipitation in a typical January.
- Record high
- 83°28° (1971)
- Record low
- 8°−13° (1963)
- Heating degree days
- 502
- Cooling degree days
- 0
Barstow in February
Highs average 66°19° and lows 40°5°, with 0.7 in18 mm of precipitation in a typical February.
- Record high
- 89°32° (2026)
- Record low
- 17°−8° (1949)
- Heating degree days
- 343
- Cooling degree days
- 1
Barstow in March
Highs average 73°23° and lows 46°8°, with 0.43 in11 mm of precipitation in a typical March.
- Record high
- 98°37° (2026)
- Record low
- 23°−5° (1966)
- Heating degree days
- 204
- Cooling degree days
- 21
Barstow in April
Highs average 80°26° and lows 51°11°, with 0.22 in5.6 mm of precipitation in a typical April.
- Record high
- 103°39° (2012)
- Record low
- 28°−2° (1945)
- Heating degree days
- 83
- Cooling degree days
- 95
Barstow in May
Highs average 89°32° and lows 60°15°, with 0.05 in1.3 mm of precipitation in a typical May.
- Record high
- 111°44° (2003)
- Record low
- 40°4° (1950)
- Heating degree days
- 18
- Cooling degree days
- 303
Barstow in June
Highs average 99°37° and lows 68°20°, with 0.03 in0.8 mm of precipitation in a typical June.
- Record high
- 118°48° (1994)
- Record low
- 45°7° (1995)
- Heating degree days
- 1
- Cooling degree days
- 560
Barstow in July
Highs average 105°41° and lows 74°23°, with 0.28 in7.1 mm of precipitation in a typical July.
- Record high
- 118°48° (2007)
- Record low
- 56°13° (1997)
- Heating degree days
- 0
- Cooling degree days
- 762
Barstow in August
Highs average 104°40° and lows 73°23°, with 0.2 in5.1 mm of precipitation in a typical August.
- Record high
- 117°47° (1986)
- Record low
- 55°13° (1953)
- Heating degree days
- 0
- Cooling degree days
- 728
Barstow in September
Highs average 96°36° and lows 66°19°, with 0.17 in4.3 mm of precipitation in a typical September.
- Record high
- 116°47° (2020)
- Record low
- 43°6° (1948)
- Heating degree days
- 1
- Cooling degree days
- 485
Barstow in OctoberThis month
Highs average 83°28° and lows 54°12°, with 0.24 in6.1 mm of precipitation in a typical October.
- Record high
- 108°42° (2024)
- Record low
- 25°−4° (1971)
- Heating degree days
- 45
- Cooling degree days
- 163
Barstow in November
Highs average 70°21° and lows 43°6°, with 0.32 in8.1 mm of precipitation in a typical November.
- Record high
- 91°33° (2015)
- Record low
- 21°−6° (1956)
- Heating degree days
- 278
- Cooling degree days
- 10
Barstow in December
Highs average 60°16° and lows 35°2°, with 0.56 in14 mm of precipitation and 0.2 in0.5 cm of snow in a typical December.
- Record high
- 83°28° (1958)
- Record low
- 7°−14° (1990)
- Heating degree days
- 544
- Cooling degree days
- 0