CASTLE VALLEY, UTAH

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 37.4 46.7 56.6 65.3 75.9 87.6 93.6 90.5 81.8 68.6 51.9 40.1 66.3
Highest Mean Max. Temperature (F) 49.4 55.6 64.7 72.1 81.7 92.9 97.6 95.1 88.6 74.9 60.6 50.8 97.6
Year Highest Occurred 1981 1995 1999 2000 1984 1986 1986 2000 1979 1988 1999 1980 1986
Lowest Mean Max. Temperature (F) 25.2 35.9 50.8 58.3 69.3 81.5 88.4 86.5 73.6 60.9 44.4 31.0 25.2
Year Lowest Occurred 1973 1979 1980 1975 1995 1995 1992 1997 1986 1984 1979 1978 1973
Mean Temperature (F) 28.0 35.9 44.6 51.9 61.7 72.4 78.4 76.0 67.4 55.0 40.9 30.9 53.6
Highest Mean Temperature (F) 37.3 43.5 50.9 58.0 66.9 76.8 81.0 79.9 72.3 61.1 44.9 40.4 81.0
Year Highest Occurred 1981 1986 1986 1981 2000 1994 1998 2000 1979 1988 1999 1980 1998
Lowest Mean Temperature (F) 16.5 25.3 39.9 46.1 57.5 67.9 74.3 73.1 62.2 50.7 34.3 21.9 16.5
Year Lowest Occurred 1973 1979 1976 1975 1995 1975 1992 1993 1986 1984 1979 1978 1973
Mean Min. Temperature (F) 18.6 25.0 32.6 38.4 47.5 57.1 63.1 61.4 52.9 41.3 29.9 21.7 40.8
Highest Mean Min. Temperature (F) 28.1 31.4 37.9 44.1 53.0 62.3 65.7 64.6 57.0 47.4 34.7 29.9 65.7
Year Highest Occurred 1980 1986 1986 1981 2000 1994 1998 2000 1990 1988 1983 1980 1998
Lowest Mean Min. Temperature (F) 6.6 14.7 26.6 32.6 43.3 53.3 60.1 57.6 48.0 37.4 24.0 12.3 6.6
Year Lowest Occurred 1989 1979 1977 1984 1975 1975 1992 1975 1971 1999 2000 1990 1989
Mean Precipitation (in.) 0.65 0.67 1.15 0.99 1.05 0.41 0.88 0.76 0.83 1.62 0.99 0.68 10.68
Highest Precipitation (in.) 2.13 1.91 2.67 2.39 2.75 1.86 2.47 1.91 3.31 5.04 3.16 2.47 5.04
Year Highest Occurred 1993 1980 1980 1994 1993 1984 1987 1993 1982 1972 1987 1978 1972
Lowest Precipitation (in.) 0.11 0.00 0.01 0.06 0.00 0.00 0.00 0.00 0.10 0.00 0.02 0.00 0.00
Year Lowest Occurred 1972 1984 1994 1989 1984 1987 1994 1998 1987 1999 1989 1989 1984
Heating Degree Days (F) 1146. 816. 632. 402. 149. 17. 0. 1. 50. 320. 723. 1057. 5313.
Cooling Degree Days (F) 0. 0. 0. 7. 47. 238. 413. 340. 121. 8. 0. 0. 1174.

Western Regional Climate Center, wrcc@dri.edu