Ben Lomond weather by month
What a typical year looks like in Ben Lomond, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at BEN LOMOND NO. 4, 1 km from Ben Lomond; records cover 1937–2026.
The year at a glance
- Precipitation a year
- 49.6 in1261 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 28
- First fall freeze
- Nov 9
- Heating degree days
- 2,285
- Cooling degree days
- 640
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 104°40° (cooling, 1%).
Month by month
Ben Lomond in January
Highs average 65°18° and lows 37°3°, with 10.4 in265 mm of precipitation in a typical January.
- Record high
- 87°31° (2014)
- Record low
- 18°−8° (1949)
- Heating degree days
- 434
- Cooling degree days
- 0
Ben Lomond in February
Highs average 67°19° and lows 39°4°, with 9.7 in246 mm of precipitation and 0.1 in0.3 cm of snow in a typical February.
- Record high
- 91°33° (2018)
- Record low
- 20°−7° (1989)
- Heating degree days
- 339
- Cooling degree days
- 0
Ben Lomond in March
Highs average 71°21° and lows 41°5°, with 7 in178 mm of precipitation in a typical March.
- Record high
- 99°37° (2026)
- Record low
- 25°−4° (1953)
- Heating degree days
- 294
- Cooling degree days
- 1
Ben Lomond in April
Highs average 75°24° and lows 42°5°, with 3.3 in83 mm of precipitation in a typical April.
- Record high
- 100°38° (1996)
- Record low
- 25°−4° (2015)
- Heating degree days
- 207
- Cooling degree days
- 10
Ben Lomond in May
Highs average 80°26° and lows 46°8°, with 1.2 in31 mm of precipitation in a typical May.
- Record high
- 106°41° (2022)
- Record low
- 29°−2° (1952)
- Heating degree days
- 112
- Cooling degree days
- 39
Ben Lomond in June
Highs average 86°30° and lows 49°9°, with 0.24 in6.1 mm of precipitation in a typical June.
- Record high
- 113°45° (2021)
- Record low
- 31°−1° (1966)
- Heating degree days
- 30
- Cooling degree days
- 91
Ben Lomond in July
Highs average 88°31° and lows 51°11°, with 0.01 in0.3 mm of precipitation in a typical July.
- Record high
- 113°45° (1972)
- Record low
- 39°4° (1951)
- Heating degree days
- 6
- Cooling degree days
- 147
Ben Lomond in August
Highs average 90°32° and lows 51°11°, with 0.04 in1 mm of precipitation in a typical August.
- Record high
- 113°45° (2020)
- Record low
- 31°−1° (2014)
- Heating degree days
- 4
- Cooling degree days
- 166
Ben Lomond in September
Highs average 89°31° and lows 49°9°, with 0.12 in3 mm of precipitation in a typical September.
- Record high
- 121°49° (2020)
- Record low
- 28°−2° (2014)
- Heating degree days
- 17
- Cooling degree days
- 130
Ben Lomond in OctoberThis month
Highs average 83°28° and lows 44°7°, with 2.2 in55 mm of precipitation in a typical October.
- Record high
- 112°44° (1996)
- Record low
- 26°−3° (1946)
- Heating degree days
- 95
- Cooling degree days
- 52
Ben Lomond in November
Highs average 71°22° and lows 40°4°, with 5 in127 mm of precipitation in a typical November.
- Record high
- 96°36° (2012)
- Record low
- 25°−4° (1938)
- Heating degree days
- 290
- Cooling degree days
- 4
Ben Lomond in December
Highs average 64°18° and lows 37°3°, with 10.4 in265 mm of precipitation in a typical December.
- Record high
- 85°29° (2020)
- Record low
- 15°−9° (1990)
- Heating degree days
- 457
- Cooling degree days
- 0