SNAKE RIVER, WYOMING

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 24.7 30.4 35.9 44.8 56.1 67.3 77.2 75.5 64.8 52.4 35.5 25.5 49.2
Highest Mean Max. Temperature (F) 35.7 38.5 43.5 59.1 63.1 77.8 83.3 83.1 75.3 63.5 41.5 34.9 53.3
Year Highest Occurred 1981 1963 1981 1987 1987 1988 1988 1971 1990 1988 1965 1980 1987
Lowest Mean Max. Temperature (F) 16.7 23.5 28.2 35.3 47.8 61.4 71.2 67.8 54.0 45.4 27.4 18.0 45.5
Year Lowest Occurred 1979 1964 1964 1975 1975 1964 1986 1968 1965 1969 1985 1978 1975
Mean Temperature (F) 11.1 15.1 21.1 31.1 41.2 50.4 57.4 55.4 45.9 35.5 22.4 11.7 33.2
Highest Mean Temperature (F) 17.7 23.9 28.0 37.6 46.8 55.9 59.6 61.6 52.5 41.0 28.2 20.4 36.1
Year Highest Occurred 1981 1963 1986 1987 1987 1988 1985 1971 1990 1988 1965 1980 1981
Lowest Mean Temperature (F) 1.3 5.2 12.3 24.4 35.3 47.0 53.7 50.8 39.2 29.3 16.1 1.8 30.3
Year Lowest Occurred 1979 1985 1965 1975 1975 1975 1986 1975 1965 1984 1979 1990 1975
Mean Min. Temperature (F) -2.5 -0.2 6.3 17.4 26.2 33.5 37.5 35.4 26.9 18.6 9.3 -2.3 17.2
Highest Mean Min. Temperature (F) 8.8 11.5 13.9 23.2 30.9 37.5 41.0 41.4 32.6 23.2 14.9 5.9 20.3
Year Highest Occurred 1967 1986 1972 1969 1981 1977 1975 1983 1963 1963 1983 1980 1981
Lowest Mean Min. Temperature (F) -14.1 -14.3 -6.5 12.5 22.8 30.7 32.8 28.4 21.5 11.9 -0.5 -15.6 14.1
Year Lowest Occurred 1979 1985 1965 1982 1986 1975 1988 1988 1988 1987 1979 1990 1985
Mean Precipitation (in.) 3.65 2.61 2.24 1.96 2.33 2.34 1.42 1.66 1.94 1.81 2.87 3.51 28.34
Highest Precipitation (in.) 8.38 8.55 3.99 4.22 4.75 6.31 3.45 3.79 4.15 3.93 5.95 9.35 41.54
Year Highest Occurred 1970 1986 1971 1975 1980 1969 1985 1968 1961 1983 1988 1977 1970
Lowest Precipitation (in.) 0.42 0.85 0.79 0.70 1.13 0.32 0.28 0.17 0.03 0.20 0.35 0.70 18.56
Year Lowest Occurred 1961 1964 1969 1977 1972 1988 1974 1988 1987 1987 1976 1986 1966
Heating Degree Days (F) 1671. 1397. 1361. 1017. 738. 438. 236. 304. 573. 915. 1278. 1652. 11580.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 7. 0. 0. 0. 0. 7.

Western Regional Climate Center, wrcc@dri.edu