Grand Valley, Colorado
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 41° -38° (1963) 62° (1986) 1.04" 11"
February 18° 47° -34° (1933) 69° (1986) 0.97" 9.4"
March 25° 58° -16° (1948) 81° (2004) 0.94" 3.3"
April 31° 66° 4° (2003) 92° (1936) 1.14" 0.4"
May 40° 75° 17° (1972) 99° (2003) 1.16" 0"
June 47° 86° 22° (1937) 102° (1990) 0.94" 0"
July 53° 92° 33° (1968) 104° (1931) 1.17" 0"
August 52° 90° 31° (1960) 102° (2004) 0.95" 0"
September 43° 81° 21° (1937) 99° (1990) 1.55" 0"
October 32° 69° 7° (1991) 88° (1992) 1.44" 0.7"
November 23° 53° -16° (1955) 79° (1934) 1.12" 4.7"
December 12° 41° -27° (1962) 65° (1980) 1.07" 12.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 35° 70° 17° (1972) 88° (1936) 0.04" 0"
May 2 36° 71° 20° (1970) 89° (1936) 0.05" 0"
May 3 36° 71° 24° (1972) 89° (1936) 0.04" 0"
May 4 36° 71° 24° (1967) 89° (2000) 0.05" 0"
May 5 37° 72° 23° (1991) 89° (1936) 0.05" 0"
May 6 37° 72° 20° (1982) 88° (2000) 0.04" 0"
May 7 37° 72° 21° (1968) 88° (1934) 0.05" 0"
May 8 38° 73° 23° (1938) 88° (1967) 0.04" 0"
May 9 38° 73° 25° (1935) 87° (1967) 0.04" 0"
May 10 38° 73° 24° (1948) 85° (1937) 0.05" 0"
May 11 38° 74° 22° (1953) 86° (1934) 0.03" 0"
May 12 39° 74° 23° (1953) 89° (1941) 0.04" 0"
May 13 39° 74° 24° (1963) 88° (1984) 0.04" 0"
May 14 39° 75° 26° (1912) 91° (1996) 0.04" 0"
May 15 39° 75° 22° (1970) 89° (1936) 0.04" 0"
May 16 40° 75° 22° (1962) 90° (1964) 0.03" 0"
May 17 40° 76° 24° (1968) 88° (1996) 0.04" 0"
May 18 40° 76° 26° (1931) 89° (1956) 0.03" 0"
May 19 40° 76° 25° (1931) 90° (1954) 0.03" 0"
May 20 41° 77° 26° (1943) 91° (1934) 0.03" 0"
May 21 41° 77° 24° (1974) 90° (1948) 0.04" 0"
May 22 41° 77° 27° (1974) 91° (2003) 0.03" 0"
May 23 41° 78° 28° (1930) 91° (1967) 0.03" 0"
May 24 42° 78° 31° (1930) 92° (2000) 0.03" 0"
May 25 42° 78° 27° (1960) 91° (2003) 0.04" 0"
May 26 42° 79° 28° (1980) 94° (2003) 0.03" 0"
May 27 42° 79° 29° (1973) 92° (2003) 0.03" 0"
May 28 42° 79° 27° (1954) 92° (2003) 0.03" 0"
May 29 43° 80° 25° (1955) 99° (2003) 0.04" 0"
May 30 43° 80° 31° (1962) 98° (2003) 0.03" 0"
May 31 43° 81° 30° (1979) 94° (1956) 0.03" 0"
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