SILVER LAKE RANGER STN, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 39.4 44.6 50.3 58.3 66.3 75.3 83.7 84.0 76.0 64.7 46.7 39.4 60.7
Highest Mean Max. Temperature (F) 45.0 53.6 58.7 69.1 77.6 83.3 88.2 90.1 82.0 74.7 56.3 47.9 90.1
Year Highest Occurred 1999 1991 1992 1987 1992 1974 1998 1971 1991 1988 1976 1976 1971
Lowest Mean Max. Temperature (F) 31.8 36.2 44.6 49.4 56.4 70.2 73.8 75.8 66.2 56.1 36.3 32.4 31.8
Year Lowest Occurred 1993 1989 1991 1975 1998 1995 1993 1976 1986 1984 1985 1972 1993
Mean Temperature (F) 30.3 33.8 37.9 43.5 50.3 57.6 64.1 63.9 56.2 47.2 36.3 29.5 45.9
Highest Mean Temperature (F) 35.6 41.3 43.4 49.4 57.5 63.0 68.1 68.9 60.2 53.5 43.2 35.6 68.9
Year Highest Occurred 1978 1992 1992 1987 1992 1974 1985 1971 1991 1988 1999 1980 1971
Lowest Mean Temperature (F) 22.9 23.2 33.3 36.3 45.5 53.0 55.8 59.0 50.9 43.2 26.9 21.3 21.3
Year Lowest Occurred 1979 1993 1971 1975 1977 1996 1993 1976 1986 1998 1985 1972 1972
Mean Min. Temperature (F) 21.1 23.0 25.5 28.6 34.3 39.9 44.4 43.8 36.3 29.6 25.8 19.6 31.0
Highest Mean Min. Temperature (F) 28.1 30.9 31.7 34.7 38.1 45.5 48.2 47.8 40.4 35.0 33.1 27.4 48.2
Year Highest Occurred 1998 1992 1983 1994 1987 1986 1985 1983 1994 1975 1999 1981 1985
Lowest Mean Min. Temperature (F) 12.9 9.3 20.2 23.2 30.8 34.9 37.7 39.3 30.6 23.3 15.1 10.3 9.3
Year Lowest Occurred 1979 1993 1971 1975 1972 1996 1993 1980 1972 1998 1993 1972 1993
Mean Precipitation (in.) 0.99 0.73 0.81 0.76 1.11 0.79 0.58 0.59 0.57 0.61 1.10 1.16 9.80
Highest Precipitation (in.) 2.56 2.71 1.91 2.16 4.98 2.52 3.46 2.32 1.91 1.79 3.56 3.82 4.98
Year Highest Occurred 1993 1986 1983 2000 1998 1982 1987 1976 1982 2000 1981 1996 1998
Lowest Precipitation (in.) 0.04 0.10 0.08 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.00 0.00
Year Lowest Occurred 1991 1992 1994 1977 1992 1974 1989 1995 1991 1988 1976 1976 1992
Heating Degree Days (F) 1077. 874. 840. 647. 455. 242. 107. 109. 277. 555. 862. 1100. 7145.
Cooling Degree Days (F) 0. 0. 0. 0. 1. 20. 77. 73. 11. 0. 0. 0. 182.

Western Regional Climate Center, wrcc@dri.edu