Grass Valley weather by month
What a typical year looks like in Grass Valley, Nevada: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Winnemucca Airport, 12 km from Grass Valley; records cover 1877–2026.
The year at a glance
- Precipitation a year
- 8.3 in210 mm
- Snow a year
- 22 in56 cm
- Last spring freeze
- Jun 8
- First fall freeze
- Sep 10
- Heating degree days
- 5,891
- Cooling degree days
- 683
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −1°−18° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Grass Valley in January
Highs average 44°7° and lows 21°−6°, with 0.96 in24 mm of precipitation and 4 in11 cm of snow in a typical January.
- Record high
- 68°20° (1971)
- Record low
- −36°−38° (1937)
- Heating degree days
- 1015
- Cooling degree days
- 0
Grass Valley in February
Highs average 49°10° and lows 24°−5°, with 0.71 in18 mm of precipitation and 4 in9 cm of snow in a typical February.
- Record high
- 74°23° (1981)
- Record low
- −28°−33° (1985)
- Heating degree days
- 794
- Cooling degree days
- 0
Grass Valley in March
Highs average 58°14° and lows 28°−2°, with 0.87 in22 mm of precipitation and 3 in8 cm of snow in a typical March.
- Record high
- 87°31° (2026)
- Record low
- −3°−19° (1882)
- Heating degree days
- 694
- Cooling degree days
- 0
Grass Valley in April
Highs average 64°18° and lows 32°0°, with 1 in25 mm of precipitation and 1.8 in4.6 cm of snow in a typical April.
- Record high
- 90°32° (1981)
- Record low
- 6°−14° (1970)
- Heating degree days
- 524
- Cooling degree days
- 0
Grass Valley in May
Highs average 74°23° and lows 39°4°, with 1.1 in29 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 100°38° (2020)
- Record low
- 10°−12° (2002)
- Heating degree days
- 283
- Cooling degree days
- 16
Grass Valley in June
Highs average 85°29° and lows 46°8°, with 0.5 in13 mm of precipitation in a typical June.
- Record high
- 106°41° (1988)
- Record low
- 23°−5° (1954)
- Heating degree days
- 89
- Cooling degree days
- 101
Grass Valley in July
Highs average 96°35° and lows 54°12°, with 0.16 in4.1 mm of precipitation in a typical July.
- Record high
- 109°43° (2002)
- Record low
- 29°−2° (1955)
- Heating degree days
- 6
- Cooling degree days
- 300
Grass Valley in August
Highs average 93°34° and lows 50°10°, with 0.12 in3 mm of precipitation in a typical August.
- Record high
- 108°42° (1983)
- Record low
- 26°−3° (1887)
- Heating degree days
- 13
- Cooling degree days
- 217
Grass Valley in September
Highs average 83°29° and lows 41°5°, with 0.39 in9.9 mm of precipitation in a typical September.
- Record high
- 106°41° (2022)
- Record low
- 12°−11° (1958)
- Heating degree days
- 134
- Cooling degree days
- 48
Grass Valley in OctoberThis month
Highs average 69°20° and lows 30°−1°, with 0.66 in17 mm of precipitation and 0.5 in1.3 cm of snow in a typical October.
- Record high
- 94°34° (2010)
- Record low
- −2°−19° (2002)
- Heating degree days
- 484
- Cooling degree days
- 1
Grass Valley in November
Highs average 54°12° and lows 23°−5°, with 0.76 in19 mm of precipitation and 2.6 in6.6 cm of snow in a typical November.
- Record high
- 77°25° (1976)
- Record low
- −10°−23° (2010)
- Heating degree days
- 792
- Cooling degree days
- 0
Grass Valley in December
Highs average 43°6° and lows 19°−7°, with 1 in26 mm of precipitation and 6 in15 cm of snow in a typical December.
- Record high
- 70°21° (1939)
- Record low
- −37°−38° (1990)
- Heating degree days
- 1063
- Cooling degree days
- 0