HARTLINE, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 33.2 40.4 51.6 62.0 71.1 78.9 87.1 86.6 77.5 62.3 43.3 33.5 60.6
Highest Mean Max. Temperature (F) 40.9 50.2 60.1 69.8 77.0 86.1 94.4 92.4 84.3 68.8 49.2 39.9 94.4
Year Highest Occurred 1981 1991 1992 1977 1993 1986 1985 1971 1991 1988 1999 1973 1985
Lowest Mean Max. Temperature (F) 20.4 31.5 44.9 56.2 64.4 73.0 77.5 81.1 67.7 55.5 29.5 21.8 20.4
Year Lowest Occurred 1979 1989 1975 1982 1996 1991 1993 1995 1985 1985 1985 1984 1979
Mean Temperature (F) 26.5 32.5 41.2 49.0 56.9 63.8 71.2 70.9 62.3 49.5 35.5 27.2 48.9
Highest Mean Temperature (F) 35.4 41.4 48.2 54.4 63.4 70.5 77.4 76.8 68.7 56.0 42.0 34.2 77.4
Year Highest Occurred 1981 1991 1992 1977 1993 1986 1985 1986 1998 1988 1999 1973 1985
Lowest Mean Temperature (F) 13.1 23.0 35.3 43.5 51.3 59.2 65.2 66.3 55.5 43.8 20.7 13.9 13.1
Year Lowest Occurred 1979 1985 1985 1982 1984 1981 1993 1995 1985 1985 1985 1984 1979
Mean Min. Temperature (F) 19.8 24.5 30.8 35.9 42.6 48.7 55.2 55.1 47.1 36.6 27.6 20.9 37.1
Highest Mean Min. Temperature (F) 29.9 32.8 36.2 40.4 49.7 54.8 61.7 61.5 54.3 43.2 34.8 28.9 61.7
Year Highest Occurred 1981 1992 1992 1989 1993 1986 1998 1986 1998 1988 1999 1991 1998
Lowest Mean Min. Temperature (F) 5.9 13.3 24.8 29.4 37.6 44.4 47.5 50.8 42.3 32.0 11.9 6.0 5.9
Year Lowest Occurred 1979 1985 1985 1972 1977 1981 1989 1980 1972 1984 1985 1984 1979
Mean Precipitation (in.) 0.83 0.97 0.99 0.77 1.06 0.81 0.69 0.46 0.50 0.59 1.37 1.41 10.45
Highest Precipitation (in.) 3.35 3.64 2.73 1.72 2.88 2.42 3.43 1.48 2.19 1.76 4.82 3.86 4.82
Year Highest Occurred 1995 1980 1983 1993 1972 1984 1992 1976 1979 1975 1973 1973 1973
Lowest Precipitation (in.) 0.00 0.00 0.15 0.00 0.15 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Year Lowest Occurred 2000 1993 1985 1985 1992 1986 1994 2000 1999 1993 1993 1986 2000
Heating Degree Days (F) 1195. 912. 738. 482. 267. 117. 32. 29. 172. 484. 888. 1171. 6487.
Cooling Degree Days (F) 0. 0. 0. 0. 15. 80. 223. 210. 89. 2. 0. 0. 619.

Western Regional Climate Center, wrcc@dri.edu