Grass Valley, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 31° 53° 15° (1979) 77° (1975) 9.86" 3.6"
February 33° 55° 9° (1989) 81° (1971) 9.21" 1.9"
March 36° 57° 19° (1970) 81° (1986) 8.52" 1.6"
April 39° 63° 26° (1999) 88° (1987) 3.69" 0.9"
May 45° 70° 27° (1988) 99° (1984) 1.97" 0"
June 51° 79° 36° (1988) 100° (2000) 0.62" 0"
July 55° 87° 40° (1987) 108° (1972) 0.18" 0"
August 54° 86° 41° (1989) 108° (1971) 0.23" 0"
September 50° 81° 35° (2007) 104° (1971) 1.1" 0"
October 43° 71° 27° (1969) 97° (2001) 2.72" 0"
November 35° 58° 19° (1977) 87° (1966) 7.08" 0.4"
December 31° 53° 3° (1972) 80° (1980) 7.89" 2.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 42° 66° 27° (1988) 86° (1981) 0.08" NA
May 2 42° 67° 33° (1988) 80° (1985) 0.08" NA
May 3 42° 67° 34° (2003) 85° (2004) 0.08" NA
May 4 42° 67° 30° (1975) 86° (1992) 0.08" NA
May 5 43° 67° 31° (1975) 88° (1992) 0.08" NA
May 6 43° 68° 33° (1968) 87° (1987) 0.08" NA
May 7 43° 68° 32° (1986) 90° (1987) 0.08" NA
May 8 43° 68° 31° (1979) 90° (1987) 0.07" NA
May 9 43° 68° 31° (1983) 91° (1987) 0.07" NA
May 10 44° 69° 35° (1983) 84° (2001) 0.07" NA
May 11 44° 69° 31° (2000) 86° (1987) 0.07" NA
May 12 44° 69° 34° (1967) 87° (1987) 0.07" NA
May 13 44° 69° 37° (1967) 88° (1976) 0.07" NA
May 14 45° 70° 36° (1968) 90° (1972) 0.07" NA
May 15 45° 70° 35° (1999) 89° (1976) 0.07" NA
May 16 45° 70° 35° (1971) 87° (1970) 0.06" NA
May 17 45° 70° 32° (1977) 90° (1970) 0.06" NA
May 18 45° 71° 31° (1974) 90° (1973) 0.06" NA
May 19 46° 71° 32° (1974) 88° (1973) 0.06" NA
May 20 46° 71° 37° (1970) 87° (2001) 0.06" NA
May 21 46° 72° 37° (2002) 89° (2001) 0.06" NA
May 22 46° 72° 34° (1986) 93° (2001) 0.06" NA
May 23 46° 72° 35° (1980) 91° (1967) 0.06" NA
May 24 47° 72° 33° (1980) 90° (2000) 0.05" NA
May 25 47° 73° 35° (1980) 91° (1982) 0.05" NA
May 26 47° 73° 37° (1980) 90° (1982) 0.05" NA
May 27 47° 73° 39° (1998) 90° (1974) 0.05" NA
May 28 47° 74° 38° (1977) 93° (1984) 0.05" NA
May 29 47° 74° 38° (1998) 99° (1984) 0.04" NA
May 30 48° 74° 33° (1988) 91° (1973) 0.04" NA
May 31 48° 75° 36° (1971) 92° (2001) 0.04" NA
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