Monte Sereno weather by month
What a typical year looks like in Monte Sereno, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at San Jose, 14 km from Monte Sereno; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 13.5 in342 mm
- Snow a year
- Rare
- Last spring freeze
- Jan 17
- First fall freeze
- Dec 18
- Heating degree days
- 2,184
- Cooling degree days
- 624
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 33°1° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Monte Sereno in January
Highs average 60°15° and lows 42°5°, with 2.8 in71 mm of precipitation in a typical January.
- Record high
- 79°26° (1962)
- Record low
- 18°−8° (1894)
- Heating degree days
- 440
- Cooling degree days
- 0
Monte Sereno in February
Highs average 62°17° and lows 44°7°, with 2.7 in68 mm of precipitation in a typical February.
- Record high
- 81°27° (1930)
- Record low
- 24°−4° (1894)
- Heating degree days
- 332
- Cooling degree days
- 0
Monte Sereno in March
Highs average 66°19° and lows 46°8°, with 2.1 in53 mm of precipitation in a typical March.
- Record high
- 89°32° (2015)
- Record low
- 25°−4° (1895)
- Heating degree days
- 278
- Cooling degree days
- 2
Monte Sereno in April
Highs average 69°21° and lows 48°9°, with 1.1 in27 mm of precipitation in a typical April.
- Record high
- 95°35° (1989)
- Record low
- 26°−3° (1895)
- Heating degree days
- 197
- Cooling degree days
- 11
Monte Sereno in May
Highs average 74°23° and lows 52°11°, with 0.39 in9.9 mm of precipitation in a typical May.
- Record high
- 102°39° (1910)
- Record low
- 32°0° (1894)
- Heating degree days
- 102
- Cooling degree days
- 38
Monte Sereno in June
Highs average 79°26° and lows 56°13°, with 0.18 in4.6 mm of precipitation in a typical June.
- Record high
- 107°42° (1961)
- Record low
- 33°1° (1893)
- Heating degree days
- 24
- Cooling degree days
- 93
Monte Sereno in July
Highs average 81°27° and lows 58°15°, with 0 in0 mm of precipitation in a typical July.
- Record high
- 108°42° (1905)
- Record low
- 40°4° (1893)
- Heating degree days
- 4
- Cooling degree days
- 142
Monte Sereno in August
Highs average 81°27° and lows 59°15°, with 0.05 in1.3 mm of precipitation in a typical August.
- Record high
- 105°41° (1993)
- Record low
- 39°4° (1893)
- Heating degree days
- 2
- Cooling degree days
- 157
Monte Sereno in September
Highs average 81°27° and lows 57°14°, with 0.07 in1.8 mm of precipitation in a typical September.
- Record high
- 109°43° (2022)
- Record low
- 35°2° (1893)
- Heating degree days
- 12
- Cooling degree days
- 130
Monte Sereno in OctoberThis month
Highs average 76°24° and lows 53°12°, with 0.53 in13 mm of precipitation in a typical October.
- Record high
- 106°41° (2024)
- Record low
- 30°−1° (1893)
- Heating degree days
- 72
- Cooling degree days
- 49
Monte Sereno in November
Highs average 66°19° and lows 46°8°, with 1.3 in34 mm of precipitation in a typical November.
- Record high
- 85°29° (1921)
- Record low
- 22°−6° (1893)
- Heating degree days
- 275
- Cooling degree days
- 2
Monte Sereno in December
Highs average 60°15° and lows 42°5°, with 2.3 in58 mm of precipitation in a typical December.
- Record high
- 79°26° (1958)
- Record low
- 19°−7° (1990)
- Heating degree days
- 446
- Cooling degree days
- 0