Greenfield weather by month
What a typical year looks like in Greenfield, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at KING CITY, 16 km from Greenfield; records cover 1926–2026.
The year at a glance
- Precipitation a year
- 11.8 in300 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 1
- First fall freeze
- Nov 16
- Heating degree days
- 2,288
- Cooling degree days
- 578
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 27°−3° (heating, 99%) and 101°38° (cooling, 1%).
Month by month
Greenfield in January
Highs average 63°17° and lows 38°3°, with 2.4 in62 mm of precipitation in a typical January.
- Record high
- 86°30° (1976)
- Record low
- 15°−9° (1975)
- Heating degree days
- 440
- Cooling degree days
- 0
Greenfield in February
Highs average 65°19° and lows 40°5°, with 2.5 in65 mm of precipitation in a typical February.
- Record high
- 90°32° (1977)
- Record low
- 19°−7° (1929)
- Heating degree days
- 342
- Cooling degree days
- 0
Greenfield in March
Highs average 70°21° and lows 42°6°, with 2 in50 mm of precipitation in a typical March.
- Record high
- 100°38° (2026)
- Record low
- 22°−6° (1971)
- Heating degree days
- 278
- Cooling degree days
- 2
Greenfield in April
Highs average 74°23° and lows 44°7°, with 0.83 in21 mm of precipitation in a typical April.
- Record high
- 104°40° (2009)
- Record low
- 24°−4° (1927)
- Heating degree days
- 193
- Cooling degree days
- 11
Greenfield in May
Highs average 78°26° and lows 48°9°, with 0.35 in8.9 mm of precipitation in a typical May.
- Record high
- 108°42° (1976)
- Record low
- 31°−1° (1929)
- Heating degree days
- 104
- Cooling degree days
- 38
Greenfield in June
Highs average 83°28° and lows 51°11°, with 0.04 in1 mm of precipitation in a typical June.
- Record high
- 112°44° (1961)
- Record low
- 36°2° (1929)
- Heating degree days
- 28
- Cooling degree days
- 84
Greenfield in July
Highs average 85°29° and lows 54°12°, with 0.01 in0.3 mm of precipitation in a typical July.
- Record high
- 111°44° (2006)
- Record low
- 34°1° (1936)
- Heating degree days
- 4
- Cooling degree days
- 138
Greenfield in August
Highs average 85°30° and lows 54°12°, with 0.01 in0.3 mm of precipitation in a typical August.
- Record high
- 113°45° (1931)
- Record low
- 31°−1° (1964)
- Heating degree days
- 3
- Cooling degree days
- 141
Greenfield in September
Highs average 85°30° and lows 52°11°, with 0.06 in1.5 mm of precipitation in a typical September.
- Record high
- 115°46° (2017)
- Record low
- 32°0° (1950)
- Heating degree days
- 18
- Cooling degree days
- 117
Greenfield in OctoberThis month
Highs average 80°27° and lows 46°8°, with 0.54 in14 mm of precipitation in a typical October.
- Record high
- 109°43° (1980)
- Record low
- 23°−5° (1932)
- Heating degree days
- 101
- Cooling degree days
- 44
Greenfield in November
Highs average 70°21° and lows 41°5°, with 0.98 in25 mm of precipitation in a typical November.
- Record high
- 95°35° (1930)
- Record low
- 20°−7° (1938)
- Heating degree days
- 298
- Cooling degree days
- 3
Greenfield in December
Highs average 62°17° and lows 37°3°, with 2.1 in52 mm of precipitation in a typical December.
- Record high
- 91°33° (1989)
- Record low
- 14°−10° (1990)
- Heating degree days
- 479
- Cooling degree days
- 0