RIO GRANDE RSVR, COLORADO

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 33.5 37.2 41.3 47.1 57.2 68.4 73.6 71.8 65.8 56.0 42.2 33.9 52.3
Highest Mean Max. Temperature (F) 41.5 42.7 50.3 53.8 63.8 74.6 77.8 75.7 70.1 63.5 55.0 41.3 77.8
Year Highest Occurred 1986 1995 1972 1992 2000 1994 1994 1994 1979 1999 1999 1980 1994
Lowest Mean Max. Temperature (F) 27.1 32.3 35.5 39.9 51.6 62.4 68.0 67.9 58.3 45.2 34.7 27.4 27.1
Year Lowest Occurred 1979 1980 1973 1983 1980 1983 1986 1999 1986 1984 1992 1990 1979
Mean Temperature (F) 13.2 16.8 22.8 30.5 41.1 50.3 56.1 54.8 48.4 39.3 25.1 15.3 34.5
Highest Mean Temperature (F) 19.6 23.4 31.3 38.4 47.6 56.3 59.1 58.8 52.9 43.7 34.2 23.3 59.1
Year Highest Occurred 1999 1995 1999 1989 1996 1994 1996 1995 1998 1988 1999 1980 1996
Lowest Mean Temperature (F) 5.4 10.4 14.9 22.4 35.0 45.7 53.6 51.1 44.5 32.7 17.5 6.7 5.4
Year Lowest Occurred 1979 1979 1980 1980 1983 1984 1984 1978 1985 1984 1992 1978 1979
Mean Min. Temperature (F) -7.2 -3.6 4.2 13.9 25.0 32.2 38.5 37.7 30.9 22.5 8.0 -3.3 16.6
Highest Mean Min. Temperature (F) 0.8 4.9 15.9 23.8 31.3 38.0 44.2 42.3 36.8 26.5 13.4 5.5 44.2
Year Highest Occurred 1999 1996 1999 1990 1996 1994 1999 1995 1998 1988 1999 1995 1999
Lowest Mean Min. Temperature (F) -16.3 -15.6 -7.2 1.1 17.8 25.3 31.2 29.1 26.2 18.1 0.0 -16.2 -16.3
Year Lowest Occurred 1979 1979 1979 1980 1979 1979 1980 1978 1984 1976 2000 1978 1979
Mean Precipitation (in.) 0.96 1.09 1.75 1.41 1.22 0.96 2.16 2.78 2.46 2.23 1.59 1.16 19.77
Highest Precipitation (in.) 3.20 4.60 5.37 5.50 3.35 3.20 4.90 6.81 6.45 6.75 4.00 4.02 6.81
Year Highest Occurred 1980 1987 2000 1999 1990 1988 1981 1999 1985 1998 1985 1984 1999
Lowest Precipitation (in.) 0.00 0.16 0.32 0.30 0.17 0.00 0.18 1.15 0.55 0.00 0.00 0.11 0.00
Year Lowest Occurred 1986 1972 1971 1979 1998 1980 1994 1994 1987 1995 1999 1999 1986
Heating Degree Days (F) 1608. 1352. 1311. 1035. 742. 440. 277. 318. 500. 799. 1198. 1543. 11123.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Western Regional Climate Center, wrcc@dri.edu