Castle Rock, Colorado
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 44° -35° (1963) 73° (1997) 0.55" NA
February 17° 47° -29° (1982) 75° (1986) 0.53" NA
March 23° 52° -14° (1965) 80° (1997) 1.5" NA
April 30° 58° -7° (1975) 91° (1981) 1.87" NA
May 39° 67° 18° (1970) 94° (2003) 2.42" NA
June 48° 78° 28° (1975) 98° (1994) 1.92" NA
July 53° 84° 39° (1962) 99° (1973) 2.37" NA
August 51° 82° 35° (1992) 98° (2002) 2.16" NA
September 43° 74° 15° (1971) 94° (1995) 1.24" NA
October 32° 65° -3° (1993) 91° (1997) 1.09" NA
November 21° 51° -18° (1976) 78° (1989) 0.98" NA
December 15° 45° -26° (1972) 71° (1995) 0.71" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 27° 55° 11° (2005) 74° (2004) 0.06" NA
Apr 2 27° 55° -7° (1975) 76° (2002) 0.06" NA
Apr 3 27° 55° 5° (1975) 73° (1996) 0.06" NA
Apr 4 27° 56° 0° (1968) 74° (1967) 0.06" NA
Apr 5 27° 56° 9° (1966) 73° (2006) 0.06" NA
Apr 6 28° 56° -4° (1983) 78° (1991) 0.06" NA
Apr 7 28° 56° 9° (1983) 82° (1991) 0.06" NA
Apr 8 28° 56° 12° (1968) 76° (1978) 0.06" NA
Apr 9 28° 57° 4° (1973) 74° (1995) 0.06" NA
Apr 10 29° 57° 5° (1989) 80° (1977) 0.06" NA
Apr 11 29° 57° 1° (1997) 76° (1977) 0.06" NA
Apr 12 29° 57° 2° (1997) 74° (1972) 0.06" NA
Apr 13 29° 58° -2° (1997) 80° (1982) 0.06" NA
Apr 14 30° 58° 10° (1983) 83° (2006) 0.06" NA
Apr 15 30° 58° 15° (1983) 82° (2002) 0.06" NA
Apr 16 30° 58° 16° (1973) 80° (2002) 0.06" NA
Apr 17 30° 59° 4° (1999) 78° (1987) 0.06" NA
Apr 18 31° 59° 18° (1970) 80° (1987) 0.06" NA
Apr 19 31° 59° 10° (1966) 80° (1962) 0.06" NA
Apr 20 31° 59° 10° (1966) 79° (1989) 0.06" NA
Apr 21 32° 60° 14° (1982) 84° (1989) 0.06" NA
Apr 22 32° 60° 18° (1982) 83° (1989) 0.06" NA
Apr 23 32° 60° 13° (1968) 81° (1989) 0.06" NA
Apr 24 33° 60° 19° (1995) 81° (1989) 0.07" NA
Apr 25 33° 61° 22° (1980) 84° (1981) 0.07" NA
Apr 26 33° 61° 20° (1988) 84° (1981) 0.07" NA
Apr 27 33° 61° 20° (1994) 91° (1981) 0.07" NA
Apr 28 34° 61° 21° (1964) 80° (1992) 0.07" NA
Apr 29 34° 62° 19° (1996) 79° (1986) 0.07" NA
Apr 30 34° 62° 23° (2005) 80° (1992) 0.07" NA
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