PARMA EXPERIMENT STN, IDAHO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 34.9 43.7 55.0 63.9 72.9 81.9 91.2 89.8 78.7 65.9 49.4 37.1 63.7
Highest Mean Max. Temperature (F) 44.1 52.0 61.7 73.2 78.8 90.4 95.7 98.4 87.6 76.3 55.0 44.4 66.5
Year Highest Occurred 1966 1970 1978 1987 1969 1961 1961 1971 1990 1988 1965 1977 1967
Lowest Mean Max. Temperature (F) 23.9 27.8 48.0 54.6 65.9 75.4 83.7 82.1 70.0 60.0 38.0 20.4 58.6
Year Lowest Occurred 1979 1989 1985 1975 1977 1964 1983 1976 1985 1969 1985 1985 1985
Mean Temperature (F) 26.4 33.7 42.1 49.5 57.9 65.8 72.5 70.7 60.6 49.4 38.2 28.5 49.6
Highest Mean Temperature (F) 36.0 40.5 47.9 55.6 62.9 71.5 77.0 77.1 68.0 58.0 42.5 36.4 51.5
Year Highest Occurred 1970 1963 1986 1990 1987 1961 1975 1971 1990 1988 1965 1977 1967
Lowest Mean Temperature (F) 13.1 16.1 37.3 43.7 53.4 61.6 67.3 65.9 54.8 45.5 27.6 11.1 45.0
Year Lowest Occurred 1979 1989 1985 1975 1977 1980 1983 1976 1985 1985 1985 1985 1985
Mean Min. Temperature (F) 17.8 23.8 29.0 35.0 42.8 49.7 53.7 51.6 42.4 32.8 27.0 19.8 35.5
Highest Mean Min. Temperature (F) 28.3 31.5 34.8 40.0 48.3 54.5 59.7 57.4 48.7 39.6 33.7 28.3 37.5
Year Highest Occurred 1970 1961 1986 1990 1987 1988 1975 1961 1967 1988 1983 1977 1961
Lowest Mean Min. Temperature (F) 2.2 4.3 20.5 30.1 38.4 45.0 50.2 46.9 37.7 29.2 17.2 1.7 31.3
Year Lowest Occurred 1979 1989 1965 1970 1964 1980 1963 1980 1971 1966 1985 1985 1985
Mean Precipitation (in.) 1.48 0.99 1.16 0.94 0.95 0.99 0.29 0.58 0.71 0.76 1.32 1.41 11.58
Highest Precipitation (in.) 5.23 1.93 3.05 3.36 2.61 2.96 1.49 3.58 2.55 2.21 2.91 2.74 18.88
Year Highest Occurred 1970 1968 1983 1978 1962 1967 1965 1968 1980 1962 1970 1982 1970
Lowest Precipitation (in.) 0.00 0.03 0.14 0.00 0.16 0.02 0.00 0.00 0.00 0.00 0.29 0.05 6.77
Year Lowest Occurred 1985 1988 1963 1961 1978 1973 1988 1988 1987 1988 1976 1989 1966
Heating Degree Days (F) 1197. 876. 710. 465. 231. 80. 8. 26. 177. 484. 804. 1132. 6190.
Cooling Degree Days (F) 0. 0. 0. 0. 11. 104. 240. 203. 45. 0. 0. 0. 603.

Western Regional Climate Center, wrcc@dri.edu