Grass Valley, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 33° 53° 15° (1979) 77° (1975) 8.88" 0.6"
February 34° 55° 9° (1989) 81° (1971) 9.35" 2.7"
March 37° 58° 19° (1970) 81° (1986) 8.06" 2.5"
April 40° 63° 26° (1999) 88° (1987) 4.02" 0.4"
May 46° 71° 27° (1988) 99° (1984) 2.38" 0"
June 52° 80° 36° (1988) 100° (2000) 0.62" 0"
July 57° 87° 40° (1987) 108° (1972) 0.01" 0"
August 56° 87° 41° (1989) 108° (1971) 0.16" 0"
September 51° 81° 35° (2007) 104° (1971) 0.86" 0"
October 44° 71° 27° (1969) 97° (2001) 2.84" 0"
November 37° 59° 19° (1977) 87° (1966) 6.57" 0.3"
December 33° 52° 3° (1972) 80° (1980) 10.32" 1.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 43° 67° 27° (1988) 86° (1981) 0.1" 0"
May 2 43° 67° 33° (1988) 80° (1985) 0.11" 0"
May 3 44° 67° 34° (2003) 85° (2004) 0.1" 0"
May 4 44° 68° 30° (1975) 86° (1992) 0.1" 0"
May 5 44° 68° 31° (1975) 88° (1992) 0.09" 0"
May 6 44° 68° 33° (1968) 87° (1987) 0.1" 0"
May 7 44° 68° 32° (1986) 90° (1987) 0.09" 0"
May 8 45° 69° 31° (1979) 90° (1987) 0.09" 0"
May 9 45° 69° 31° (1983) 91° (1987) 0.09" 0"
May 10 45° 69° 35° (1983) 84° (2001) 0.09" 0"
May 11 45° 70° 31° (2000) 86° (1987) 0.08" 0"
May 12 46° 70° 34° (1967) 87° (1987) 0.09" 0"
May 13 46° 70° 37° (1967) 88° (1976) 0.08" 0"
May 14 46° 70° 36° (1968) 90° (1972) 0.08" 0"
May 15 46° 71° 35° (1999) 89° (1976) 0.08" 0"
May 16 46° 71° 35° (1971) 95° (2008) 0.08" 0"
May 17 47° 71° 32° (1977) 92° (2008) 0.07" 0"
May 18 47° 72° 31° (1974) 93° (2009) 0.07" 0"
May 19 47° 72° 32° (1974) 93° (2008) 0.07" 0"
May 20 47° 72° 37° (1970) 88° (2008) 0.07" 0"
May 21 47° 72° 37° (2002) 89° (2001) 0.06" 0"
May 22 48° 73° 31° (2010) 93° (2001) 0.06" 0"
May 23 48° 73° 31° (2010) 91° (1967) 0.06" 0"
May 24 48° 73° 33° (1980) 90° (2000) 0.06" 0"
May 25 48° 73° 35° (1980) 91° (1982) 0.06" 0"
May 26 48° 74° 37° (1980) 90° (1982) 0.07" 0"
May 27 48° 74° 39° (1998) 90° (1974) 0.06" 0"
May 28 49° 74° 38° (1977) 93° (1984) 0.05" 0"
May 29 49° 74° 38° (1998) 99° (1984) 0.06" 0"
May 30 49° 75° 33° (1988) 91° (1973) 0.06" 0"
May 31 49° 75° 36° (1971) 92° (2001) 0.05" 0"
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