SAINT MARIES, IDAHO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 34.5 41.9 49.6 58.8 67.6 75.9 85.0 85.1 74.6 59.8 42.7 34.5 59.2
Highest Mean Max. Temperature (F) 40.7 49.0 58.4 66.5 73.9 83.9 94.9 93.7 88.3 68.0 49.1 43.3 62.2
Year Highest Occurred 1961 1963 1986 1987 1966 1961 1985 1967 1990 1974 1969 1979 1967
Lowest Mean Max. Temperature (F) 19.7 31.3 41.6 51.3 60.8 67.5 76.3 75.4 62.0 51.7 28.5 25.6 55.9
Year Lowest Occurred 1979 1989 1964 1970 1984 1981 1983 1964 1985 1985 1985 1983 1985
Mean Temperature (F) 28.5 34.0 39.6 46.4 54.0 61.5 67.5 67.1 58.3 47.2 36.3 29.1 47.5
Highest Mean Temperature (F) 34.3 39.1 48.4 52.5 58.0 66.8 73.4 72.5 67.7 52.5 41.0 37.7 49.5
Year Highest Occurred 1967 1963 1986 1987 1987 1961 1985 1961 1990 1963 1965 1979 1990
Lowest Mean Temperature (F) 12.4 24.0 33.1 41.3 50.0 54.5 60.2 60.4 50.7 41.8 23.3 20.6 44.4
Year Lowest Occurred 1979 1989 1964 1970 1984 1981 1986 1980 1985 1985 1985 1983 1985
Mean Min. Temperature (F) 22.3 26.1 29.5 34.0 40.3 46.9 49.9 49.0 42.0 34.6 29.9 23.7 35.7
Highest Mean Min. Temperature (F) 29.7 32.4 38.3 39.7 43.9 50.3 55.9 55.0 47.0 38.9 34.8 32.1 38.5
Year Highest Occurred 1990 1961 1986 1988 1987 1970 1990 1983 1990 1988 1988 1979 1990
Lowest Mean Min. Temperature (F) 5.0 16.6 21.4 30.3 38.4 41.5 43.5 43.0 36.4 25.7 18.1 14.6 32.9
Year Lowest Occurred 1979 1989 1965 1967 1982 1981 1986 1980 1984 1987 1985 1978 1985
Mean Precipitation (in.) 4.15 2.96 2.77 2.18 2.24 1.99 1.00 1.34 1.42 1.84 3.59 3.88 29.36
Highest Precipitation (in.) 8.60 6.71 4.93 3.85 4.62 5.07 3.24 4.30 3.80 5.10 8.61 8.79 37.63
Year Highest Occurred 1974 1961 1989 1984 1990 1971 1983 1989 1985 1990 1973 1980 1964
Lowest Precipitation (in.) 0.49 0.23 0.45 0.41 0.77 0.57 0.00 0.00 0.00 0.02 0.69 0.89 14.77
Year Lowest Occurred 1985 1988 1988 1988 1966 1962 1973 1967 1990 1987 1987 1987 1987
Heating Degree Days (F) 1132. 868. 787. 558. 341. 146. 62. 78. 251. 552. 861. 1113. 6749.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 41. 139. 143. 50. 0. 0. 0. 373.

Western Regional Climate Center, wrcc@dri.edu