HEADWORKS PTLD WTR BUR, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 46.2 50.4 55.3 61.0 67.6 73.2 80.0 80.6 75.4 64.5 51.8 45.9 62.7
Highest Mean Max. Temperature (F) 52.5 57.1 64.2 66.5 77.2 78.6 86.6 85.1 81.9 72.9 58.6 52.1 86.6
Year Highest Occurred 1981 1991 1992 1987 1992 1987 1985 1996 1974 1987 1976 1980 1985
Lowest Mean Max. Temperature (F) 38.5 41.8 49.9 55.7 60.2 67.9 70.9 74.1 68.6 58.7 42.1 39.1 38.5
Year Lowest Occurred 1979 1989 1971 1972 1991 1991 1993 1975 1986 1975 1985 1983 1979
Mean Temperature (F) 40.1 42.9 46.3 50.6 56.1 61.1 66.5 67.0 62.8 54.6 45.3 40.1 52.8
Highest Mean Temperature (F) 45.8 48.9 52.2 54.1 62.4 65.0 70.6 70.3 66.5 59.0 50.1 44.4 70.6
Year Highest Occurred 1981 1992 1992 1987 1992 1992 1985 1977 1974 1987 1995 1979 1985
Lowest Mean Temperature (F) 32.3 35.0 41.8 45.7 51.8 57.7 61.6 62.7 58.7 51.2 36.4 33.5 32.3
Year Lowest Occurred 1979 1989 1971 1972 1991 1991 1993 1975 1985 1984 1985 1990 1979
Mean Min. Temperature (F) 33.9 35.4 37.2 40.1 44.5 49.0 52.9 53.4 50.2 44.6 38.8 34.3 42.9
Highest Mean Min. Temperature (F) 39.1 41.0 40.9 44.2 48.5 51.6 57.1 56.1 53.9 48.1 44.3 38.3 57.1
Year Highest Occurred 1981 1992 1986 1992 1997 1992 1998 1977 1995 1988 1995 1973 1998
Lowest Mean Min. Temperature (F) 26.1 28.1 33.5 35.6 41.5 46.4 49.9 50.8 46.5 40.4 30.6 27.6 26.1
Year Lowest Occurred 1979 1989 1985 1975 1977 1971 1988 1988 1972 1972 1985 1985 1979
Mean Precipitation (in.) 10.42 9.00 8.19 7.04 5.60 4.07 1.57 1.86 3.90 6.23 10.90 11.30 80.08
Highest Precipitation (in.) 17.60 15.99 14.39 13.18 10.81 9.22 6.56 5.55 7.72 13.91 19.34 22.83 22.83
Year Highest Occurred 1971 1996 1997 1993 1998 1984 1983 1978 1973 1994 1995 1996 1996
Lowest Precipitation (in.) 0.39 0.79 2.31 2.72 0.57 0.81 0.00 0.12 0.00 0.31 2.13 2.86 0.00
Year Lowest Occurred 1985 1993 1992 1977 1992 1987 1984 1998 1975 1987 1976 1985 1984
Heating Degree Days (F) 773. 619. 582. 434. 285. 137. 50. 39. 113. 326. 592. 771. 4721.
Cooling Degree Days (F) 0. 0. 0. 0. 8. 19. 95. 100. 48. 2. 0. 0. 272.

Western Regional Climate Center, wrcc@dri.edu