VALLECITO DAM, COLORADO

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 37.8 41.9 48.2 55.9 65.3 76.4 80.7 78.5 71.8 61.5 47.2 39.6 58.7
Highest Mean Max. Temperature (F) 48.8 50.1 59.5 62.7 72.9 82.3 86.0 82.6 78.3 68.6 57.2 49.7 86.0
Year Highest Occurred 1981 1995 1972 1989 1984 1974 1980 1995 1979 1978 1999 1980 1980
Lowest Mean Max. Temperature (F) 30.2 35.2 42.0 48.9 60.5 69.9 74.2 71.6 64.2 52.6 38.4 29.8 29.8
Year Lowest Occurred 1979 1993 1973 1975 1980 1991 1990 1990 1986 1984 2000 1990 1990
Mean Temperature (F) 22.3 26.5 34.0 41.0 49.7 58.9 64.5 63.1 56.0 46.1 33.8 25.9 43.5
Highest Mean Temperature (F) 33.4 35.5 41.2 46.3 55.6 63.2 67.7 67.6 60.3 51.1 39.8 35.8 67.7
Year Highest Occurred 1981 1995 1972 1989 1984 1974 1980 1995 1983 1979 1999 1980 1980
Lowest Mean Temperature (F) 16.0 19.8 28.7 35.7 45.7 54.1 59.5 57.7 51.6 41.3 26.3 15.6 15.6
Year Lowest Occurred 1979 1994 1980 1975 1990 1991 1992 1990 1993 1984 2000 1990 1990
Mean Min. Temperature (F) 6.8 11.0 19.7 26.0 34.1 41.3 48.2 47.7 40.1 30.7 20.3 12.1 28.2
Highest Mean Min. Temperature (F) 17.9 20.8 24.5 29.9 38.4 45.3 51.5 52.6 44.1 36.3 25.5 21.9 52.6
Year Highest Occurred 1981 1995 1986 1986 1984 1988 1998 1995 1982 1972 1981 1980 1995
Lowest Mean Min. Temperature (F) 0.0 0.9 14.8 21.2 29.8 37.1 44.5 43.7 35.6 26.1 14.1 1.5 0.0
Year Lowest Occurred 1977 1974 1980 1991 1991 1998 1992 1992 1993 1996 2000 1990 1977
Mean Precipitation (in.) 2.30 2.21 2.47 1.67 1.61 0.98 2.65 3.78 2.76 2.91 2.45 1.98 27.77
Highest Precipitation (in.) 8.18 5.82 5.06 4.46 3.43 2.98 5.89 9.27 5.55 12.42 6.47 6.30 12.42
Year Highest Occurred 1980 1976 2000 1990 1992 1988 1999 1999 1976 1972 1978 1984 1972
Lowest Precipitation (in.) 0.08 0.13 0.07 0.00 0.09 0.00 0.23 0.95 0.11 0.20 0.00 0.12 0.00
Year Lowest Occurred 1972 1972 1988 1991 1996 1980 1993 1985 1979 1995 1989 1998 1991
Heating Degree Days (F) 1324. 1080. 963. 721. 476. 204. 79. 104. 276. 586. 938. 1213. 7964.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 20. 61. 45. 5. 0. 0. 0. 131.

Western Regional Climate Center, wrcc@dri.edu