Hollister weather by month
What a typical year looks like in Hollister, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at HOLLISTER 2, 2 km from Hollister; records cover 1975–2026.
The year at a glance
- Precipitation a year
- 13.7 in348 mm
- Snow a year
- Rare
- Last spring freeze
- Feb 23
- First fall freeze
- Nov 29
- Heating degree days
- 2,738
- Cooling degree days
- 412
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 28°−2° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Hollister in January
Highs average 60°15° and lows 39°4°, with 3.1 in79 mm of precipitation in a typical January.
- Record high
- 84°29° (1976)
- Record low
- 20°−7° (2007)
- Heating degree days
- 491
- Cooling degree days
- 0
Hollister in February
Highs average 62°17° and lows 41°5°, with 2.7 in67 mm of precipitation in a typical February.
- Record high
- 82°28° (1976)
- Record low
- 20°−7° (1989)
- Heating degree days
- 382
- Cooling degree days
- 0
Hollister in March
Highs average 66°19° and lows 43°6°, with 2.2 in57 mm of precipitation in a typical March.
- Record high
- 94°34° (2026)
- Record low
- 25°−4° (2002)
- Heating degree days
- 339
- Cooling degree days
- 1
Hollister in April
Highs average 69°21° and lows 45°7°, with 0.99 in25 mm of precipitation in a typical April.
- Record high
- 99°37° (2009)
- Record low
- 27°−3° (2002)
- Heating degree days
- 253
- Cooling degree days
- 7
Hollister in May
Highs average 73°23° and lows 48°9°, with 0.44 in11 mm of precipitation in a typical May.
- Record high
- 105°41° (2001)
- Record low
- 37°3° (1981)
- Heating degree days
- 156
- Cooling degree days
- 27
Hollister in June
Highs average 78°26° and lows 51°11°, with 0.09 in2.3 mm of precipitation in a typical June.
- Record high
- 108°42° (1976)
- Record low
- 38°3° (2002)
- Heating degree days
- 68
- Cooling degree days
- 56
Hollister in July
Highs average 80°26° and lows 54°12°, with 0 in0 mm of precipitation in a typical July.
- Record high
- 112°44° (2006)
- Record low
- 39°4° (2021)
- Heating degree days
- 31
- Cooling degree days
- 84
Hollister in August
Highs average 81°27° and lows 54°12°, with 0.01 in0.3 mm of precipitation in a typical August.
- Record high
- 110°43° (1998)
- Record low
- 34°1° (2021)
- Heating degree days
- 17
- Cooling degree days
- 107
Hollister in September
Highs average 81°27° and lows 53°11°, with 0.05 in1.3 mm of precipitation in a typical September.
- Record high
- 111°44° (2020)
- Record low
- 38°3° (2021)
- Heating degree days
- 39
- Cooling degree days
- 91
Hollister in OctoberThis month
Highs average 77°25° and lows 48°9°, with 0.62 in16 mm of precipitation in a typical October.
- Record high
- 107°42° (1980)
- Record low
- 34°1° (1996)
- Heating degree days
- 119
- Cooling degree days
- 37
Hollister in November
Highs average 67°19° and lows 42°5°, with 1.3 in32 mm of precipitation in a typical November.
- Record high
- 94°34° (1997)
- Record low
- 24°−4° (1993)
- Heating degree days
- 324
- Cooling degree days
- 2
Hollister in December
Highs average 59°15° and lows 38°3°, with 2.3 in58 mm of precipitation and 0.1 in0.3 cm of snow in a typical December.
- Record high
- 78°26° (1980)
- Record low
- 14°−10° (1990)
- Heating degree days
- 519
- Cooling degree days
- 0