Grass Valley, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° 39° -22° (1957) 63° (2003) 1.46" 5.1"
February 28° 44° -23° (1950) 68° (1932) 1.16" 3.2"
March 32° 52° 3° (1993) 75° (1939) 1" 0.5"
April 36° 59° 19° (1966) 87° (1977) 0.92" 0"
May 43° 67° 20° (1954) 100° (1986) 1" 0"
June 48° 74° 27° (1976) 102° (1992) 0.66" 0"
July 54° 83° 34° (1954) 111° (1939) 0.23" 0"
August 53° 83° 31° (1980) 106° (1998) 0.25" 0"
September 46° 75° 23° (1980) 100° (1998) 0.5" 0"
October 37° 62° 7° (2002) 88° (1991) 0.97" 0.1"
November 30° 48° -15° (1985) 71° (1999) 1.61" 2"
December 24° 38° -16° (1990) 63° (1989) 1.66" 6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 39° 62° 20° (1954) 83° (1998) 0.03" 0"
May 2 39° 63° 24° (1954) 84° (1937) 0.03" 0"
May 3 39° 63° 26° (1964) 82° (1946) 0.03" 0"
May 4 40° 63° 27° (1952) 87° (1966) 0.03" 0"
May 5 40° 64° 26° (1952) 88° (1966) 0.03" 0"
May 6 40° 64° 27° (1933) 89° (1966) 0.03" 0"
May 7 40° 64° 27° (2002) 88° (1992) 0.03" 0"
May 8 41° 64° 26° (1999) 89° (1987) 0.03" 0"
May 9 41° 65° 28° (1996) 89° (1987) 0.03" 0"
May 10 41° 65° 26° (1999) 90° (1936) 0.03" 0"
May 11 42° 65° 25° (1942) 92° (1949) 0.03" 0"
May 12 42° 66° 28° (1985) 92° (1949) 0.04" 0"
May 13 42° 66° 29° (1958) 91° (1931) 0.03" 0"
May 14 42° 66° 25° (1964) 93° (1939) 0.03" 0"
May 15 43° 66° 27° (1974) 90° (1939) 0.03" 0"
May 16 43° 67° 26° (1974) 85° (1973) 0.03" 0"
May 17 43° 67° 31° (1966) 91° (2006) 0.03" 0"
May 18 43° 67° 30° (1966) 95° (2008) 0.03" 0"
May 19 44° 68° 30° (1960) 90° (2006) 0.04" 0"
May 20 44° 68° 32° (1953) 89° (1928) 0.03" 0"
May 21 44° 68° 30° (1960) 88° (1958) 0.03" 0"
May 22 44° 68° 29° (1960) 89° (1951) 0.03" 0"
May 23 44° 68° 26° (1964) 92° (2001) 0.04" 0"
May 24 45° 69° 31° (1950) 96° (2001) 0.03" 0"
May 25 45° 69° 26° (1964) 93° (1947) 0.04" 0"
May 26 45° 69° 30° (1964) 96° (1947) 0.03" 0"
May 27 45° 69° 30° (1940) 93° (1934) 0.04" 0"
May 28 45° 70° 30° (1954) 96° (1934) 0.03" 0"
May 29 46° 70° 28° (1976) 91° (1983) 0.04" 0"
May 30 46° 70° 32° (1952) 95° (1986) 0.04" 0"
May 31 46° 70° 32° (1976) 100° (1986) 0.03" 0"
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