Ono weather by month
What a typical year looks like in Ono, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Whiskeytown Reservoir, 17 km from Ono; records cover 1960–2026.
The year at a glance
- Precipitation a year
- 62.9 in1598 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 1
- First fall freeze
- Dec 2
- Heating degree days
- 2,750
- Cooling degree days
- 2,006
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 29°−2° (heating, 99%) and 108°42° (cooling, 1%).
Month by month
Ono in January
Highs average 54°12° and lows 39°4°, with 10.7 in273 mm of precipitation in a typical January.
- Record high
- 79°26° (2009)
- Record low
- 17°−8° (1962)
- Heating degree days
- 567
- Cooling degree days
- 0
Ono in February
Highs average 58°15° and lows 41°5°, with 11.6 in294 mm of precipitation in a typical February.
- Record high
- 82°28° (1995)
- Record low
- 18°−8° (1962)
- Heating degree days
- 434
- Cooling degree days
- 0
Ono in March
Highs average 63°17° and lows 43°6°, with 9.9 in251 mm of precipitation in a typical March.
- Record high
- 92°33° (2002)
- Record low
- 26°−3° (1971)
- Heating degree days
- 366
- Cooling degree days
- 4
Ono in April
Highs average 70°21° and lows 47°8°, with 5 in126 mm of precipitation in a typical April.
- Record high
- 97°36° (2009)
- Record low
- 28°−2° (1997)
- Heating degree days
- 223
- Cooling degree days
- 28
Ono in May
Highs average 79°26° and lows 55°13°, with 3.1 in79 mm of precipitation in a typical May.
- Record high
- 104°40° (2008)
- Record low
- 32°0° (1964)
- Heating degree days
- 79
- Cooling degree days
- 144
Ono in June
Highs average 89°32° and lows 62°17°, with 1.3 in34 mm of precipitation in a typical June.
- Record high
- 113°45° (2021)
- Record low
- 39°4° (2011)
- Heating degree days
- 18
- Cooling degree days
- 326
Ono in July
Highs average 99°37° and lows 67°19°, with 0.15 in3.8 mm of precipitation in a typical July.
- Record high
- 119°48° (2024)
- Record low
- 47°8° (1963)
- Heating degree days
- 0
- Cooling degree days
- 546
Ono in August
Highs average 98°37° and lows 65°18°, with 0.1 in2.5 mm of precipitation in a typical August.
- Record high
- 115°46° (1981)
- Record low
- 47°8° (2005)
- Heating degree days
- 0
- Cooling degree days
- 507
Ono in September
Highs average 92°33° and lows 61°16°, with 0.46 in12 mm of precipitation in a typical September.
- Record high
- 120°49° (1988)
- Record low
- 41°5° (1970)
- Heating degree days
- 7
- Cooling degree days
- 348
Ono in OctoberThis month
Highs average 78°25° and lows 52°11°, with 2.8 in71 mm of precipitation in a typical October.
- Record high
- 104°40° (1980)
- Record low
- 28°−2° (1971)
- Heating degree days
- 100
- Cooling degree days
- 100
Ono in November
Highs average 62°17° and lows 44°7°, with 6.3 in160 mm of precipitation in a typical November.
- Record high
- 93°34° (1966)
- Record low
- 25°−4° (1985)
- Heating degree days
- 369
- Cooling degree days
- 3
Ono in December
Highs average 54°12° and lows 39°4°, with 11.5 in291 mm of precipitation in a typical December.
- Record high
- 81°27° (1988)
- Record low
- 11°−12° (1990)
- Heating degree days
- 587
- Cooling degree days
- 0