Grass Valley, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° 38° -22° (1957) 63° (2003) 1.57" 5.7"
February 28° 44° -23° (1950) 68° (1932) 1.14" 2.9"
March 32° 51° 3° (1993) 75° (1939) 1.09" 1.2"
April 36° 58° 19° (1966) 87° (1977) 0.88" 0.2"
May 41° 66° 20° (1954) 100° (1986) 0.89" 0"
June 47° 73° 27° (1976) 102° (1992) 0.62" 0"
July 53° 82° 34° (1954) 111° (1939) 0.31" 0"
August 53° 82° 31° (1980) 106° (1998) 0.38" 0"
September 45° 74° 23° (1980) 100° (1998) 0.52" 0"
October 37° 62° 7° (2002) 88° (1991) 0.85" 0.2"
November 31° 47° -15° (1985) 71° (1999) 1.64" 2.6"
December 25° 38° -16° (1990) 63° (1989) 1.54" 6.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 28° 41° -5° (1985) 60° (1994) 0.05" NA
Dec 2 28° 41° 1° (1985) 61° (1958) 0.05" NA
Dec 3 27° 41° 5° (1985) 60° (1958) 0.05" NA
Dec 4 27° 40° 3° (1992) 63° (1939) 0.05" NA
Dec 5 27° 40° -3° (1972) 63° (1989) 0.05" NA
Dec 6 27° 40° 5° (1956) 56° (1957) 0.05" NA
Dec 7 27° 40° 3° (1956) 62° (1938) 0.05" NA
Dec 8 26° 39° -16° (1972) 56° (1957) 0.05" NA
Dec 9 26° 39° -15° (1972) 60° (1957) 0.05" NA
Dec 10 26° 39° -12° (1972) 59° (1987) 0.05" NA
Dec 11 26° 39° -11° (1972) 60° (1955) 0.05" NA
Dec 12 26° 39° -4° (1932) 58° (1955) 0.05" NA
Dec 13 26° 39° -6° (1972) 57° (1988) 0.05" NA
Dec 14 25° 38° 0° (1932) 59° (1953) 0.05" NA
Dec 15 25° 38° 2° (1932) 58° (1939) 0.05" NA
Dec 16 25° 38° -5° (1964) 61° (1939) 0.05" NA
Dec 17 25° 38° -11° (1964) 58° (1976) 0.05" NA
Dec 18 25° 38° -9° (1964) 55° (1936) 0.05" NA
Dec 19 25° 38° -7° (1984) 57° (1941) 0.05" NA
Dec 20 25° 38° -6° (1990) 55° (1934) 0.05" NA
Dec 21 25° 38° -16° (1990) 61° (1933) 0.04" NA
Dec 22 25° 38° -14° (1990) 60° (1933) 0.05" NA
Dec 23 25° 38° -13° (1983) 60° (1950) 0.05" NA
Dec 24 25° 37° -5° (1990) 53° (1947) 0.05" NA
Dec 25 24° 37° -2° (1983) 55° (1980) 0.05" NA
Dec 26 24° 37° 8° (1983) 58° (1980) 0.05" NA
Dec 27 24° 37° 4° (1983) 60° (1980) 0.05" NA
Dec 28 24° 37° -1° (1983) 55° (1937) 0.05" NA
Dec 29 24° 37° -14° (1990) 54° (1961) 0.05" NA
Dec 30 24° 37° -9° (1968) 58° (1958) 0.05" NA
Dec 31 24° 37° -10° (1968) 57° (1938) 0.05" NA
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