PARMA EXPERIMENT STN, IDAHO

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 35.5 43.6 55.7 64.5 72.8 81.5 90.6 90.4 79.7 66.6 48.5 36.9 63.9
Highest Mean Max. Temperature (F) 43.3 52.3 64.0 73.2 81.1 88.6 96.3 98.4 87.6 76.3 55.8 44.4 98.4
Year Highest Occurred 1998 1995 1992 1987 1992 1986 1998 1971 1990 1988 1999 1977 1971
Lowest Mean Max. Temperature (F) 23.9 27.8 47.9 54.6 65.9 75.7 81.2 82.1 70.0 61.3 38.0 20.4 20.4
Year Lowest Occurred 1979 1989 1993 1975 1977 1993 1993 1976 1985 1984 1985 1985 1985
Mean Temperature (F) 27.2 34.0 42.9 50.1 58.2 65.7 72.4 71.2 61.4 50.1 37.5 28.3 49.9
Highest Mean Temperature (F) 35.3 41.1 47.9 55.6 63.5 71.2 78.4 77.1 68.5 58.0 42.9 36.4 78.4
Year Highest Occurred 1998 1995 1986 1990 1992 1986 1998 1971 1998 1988 1999 1977 1998
Lowest Mean Temperature (F) 13.1 16.1 37.3 43.7 53.4 61.6 65.3 65.9 54.8 45.5 27.6 11.1 11.1
Year Lowest Occurred 1979 1989 1985 1975 1977 1980 1993 1976 1985 1985 1985 1985 1985
Mean Min. Temperature (F) 18.8 24.3 30.1 35.7 43.6 49.8 54.2 52.0 43.1 33.5 26.5 19.7 35.9
Highest Mean Min. Temperature (F) 27.9 30.9 34.8 40.0 48.3 54.5 60.5 55.8 51.9 39.6 33.7 28.3 60.5
Year Highest Occurred 1981 1983 1986 1990 1987 1988 1998 1971 1998 1988 1983 1977 1998
Lowest Mean Min. Temperature (F) 2.2 4.3 25.6 31.1 39.9 45.0 49.4 46.9 37.7 29.4 17.2 1.7 1.7
Year Lowest Occurred 1979 1989 1976 1982 1974 1980 1993 1980 1971 1976 1993 1985 1985
Mean Precipitation (in.) 1.38 1.01 1.25 0.96 1.13 0.84 0.35 0.41 0.65 0.67 1.23 1.27 11.15
Highest Precipitation (in.) 3.62 2.12 3.05 3.36 4.22 2.70 1.34 2.08 2.55 2.07 2.45 2.74 4.22
Year Highest Occurred 1978 1999 1983 1978 1998 1972 1997 1979 1980 2000 1988 1982 1998
Lowest Precipitation (in.) 0.00 0.03 0.07 0.02 0.16 0.02 0.00 0.00 0.00 0.00 0.29 0.05 0.00
Year Lowest Occurred 1985 1988 1994 1987 1978 1973 2000 2000 1999 1988 1976 1989 1985
Heating Degree Days (F) 1174. 868. 686. 448. 230. 78. 16. 26. 167. 464. 825. 1138. 6120.
Cooling Degree Days (F) 0. 0. 0. 2. 20. 98. 246. 219. 59. 1. 0. 0. 645.

Western Regional Climate Center, wrcc@dri.edu