N WILLAMETTE EXP STN, OREGON

Monthly Average Temperature (Degrees Fahrenheit)

(356151)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200708
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1963 33.58 a 47.50 44.61 ----- z 55.98 59.52 62.27 64.89 64.35 53.42 46.29 a 39.27 a 51.97
1964 41.32 40.69 43.69 47.43 52.37 58.93 64.50 62.61 57.73 b 53.37 41.60 38.81 50.26
1965 39.85 42.15 a 47.16 50.77 52.55 58.83 67.06 66.53 60.02 54.69 47.92 38.48 52.17
1966 39.45 41.46 44.84 51.70 56.23 61.05 64.05 a 65.11 62.60 52.02 47.48 44.13 52.51
1967 43.27 42.29 43.35 45.28 55.06 63.55 67.44 70.94 64.68 52.50 46.08 40.65 52.92
1968 39.58 47.84 47.15 47.30 55.03 60.05 66.03 65.24 60.27 b 51.15 a 45.77 39.06 e 52.04
1969 32.71 39.54 c 46.26 49.23 58.17 b 65.88 b 64.28 a 62.30 d 61.45 a 50.13 45.71 b 41.92 a 51.46
1970 40.78 a 44.70 45.12 a 46.17 54.74 63.95 67.16 65.44 56.87 50.10 45.80 39.34 51.68
1971 39.13 40.95 42.12 a 47.48 54.58 57.00 66.35 68.41 b 58.07 49.24 43.37 38.65 a 50.45
1972 37.76 41.97 47.26 45.62 57.06 60.93 68.24 68.26 58.40 51.24 45.78 35.37 51.49
1973 38.08 43.61 45.06 e 49.67 56.74 60.70 67.26 62.63 62.20 51.58 43.68 43.77 52.08
1974 35.68 c 41.05 45.44 49.13 52.97 61.93 a 64.65 66.69 67.03 53.15 46.10 42.87 52.22
1975 42.11 41.00 43.66 b 45.67 54.61 60.05 67.10 63.10 64.18 52.24 44.36 a 42.24 51.69
1976 41.03 40.96 a 43.55 48.57 55.40 57.75 64.89 63.24 62.40 a 52.31 b 45.70 37.37 51.10
1977 36.87 43.61 42.87 51.40 51.98 61.92 64.84 70.23 59.43 52.98 43.41 c 43.90 a 51.95
1978 41.27 c 45.66 48.71 49.78 53.74 64.19 c 67.16 c 66.63 59.35 54.06 39.45 34.71 c 52.06
1979 31.34 41.04 47.98 50.72 56.65 62.67 67.89 65.95 63.65 56.19 43.78 a 43.94 52.65
1980 36.53 43.00 44.98 51.53 54.69 58.40 66.58 63.65 61.57 54.21 46.82 41.81 51.98
1981 41.77 43.27 47.31 51.00 c 55.52 60.02 66.13 a 69.19 61.97 52.08 47.48 a 42.58 53.19
1982 37.89 41.55 45.53 46.78 56.27 63.93 65.42 66.60 62.25 52.94 43.32 41.10 51.96
1983 43.06 46.57 49.48 50.98 58.55 60.50 64.58 67.02 59.87 52.13 47.95 a 35.92 53.05
1984 42.77 44.47 49.40 48.72 53.76 59.45 66.02 66.58 61.47 50.37 44.65 37.05 52.06
1985 35.29 39.59 43.60 52.27 56.16 62.20 70.40 65.87 58.65 51.73 38.10 a 34.13 50.67
1986 43.00 43.84 51.00 49.47 56.06 65.47 63.53 70.27 59.03 54.47 47.18 39.84 53.60
1987 39.68 45.07 47.52 53.50 59.56 64.45 65.92 67.66 63.78 56.73 46.97 38.76 54.13
1988 39.10 43.41 46.63 51.78 54.61 61.13 67.08 65.92 62.12 57.18 46.77 39.77 52.96
1989 41.39 35.52 45.21 54.97 56.52 64.23 64.26 64.29 64.67 52.87 46.60 38.84 52.45
1990 42.85 41.77 48.65 52.87 54.98 61.78 69.35 68.26 65.58 51.19 46.45 33.37 53.09
1991 39.53 48.12 44.71 49.25 52.89 ----- z 67.90 68.26 64.95 54.31 46.90 40.92 52.52
1992 43.45 47.79 51.27 53.75 60.94 66.00 68.85 68.87 60.78 54.69 45.38 38.98 55.06
1993 36.11 40.16 48.68 50.72 59.48 60.75 62.84 67.48 63.43 56.24 39.42 39.58 52.07
1994 43.65 40.93 49.32 51.87 58.58 60.37 68.68 67.10 64.55 51.76 40.63 42.16 53.30
1995 44.52 46.44 a 47.71 49.48 58.68 62.57 68.53 64.95 65.42 53.00 50.92 42.34 54.55
1996 41.47 41.76 47.63 51.66 a 53.66 61.47 70.32 68.00 59.67 52.69 44.50 41.61 52.87
1997 41.13 43.34 46.44 49.52 61.05 60.87 66.90 69.94 64.48 52.50 48.80 39.65 53.72
1998 44.00 45.98 47.65 50.90 55.66 62.65 69.97 68.73 65.35 53.42 47.60 19.87 h 55.63
1999 45.02 f 43.86 45.44 50.40 53.40 59.60 65.65 67.29 63.28 54.03 49.42 43.32 54.15
2000 40.98 43.78 44.84 52.40 56.37 64.30 66.68 66.44 ----- z 53.84 42.65 40.94 52.11
2001 41.55 42.64 47.66 43.97 58.65 59.57 66.23 67.76 64.30 52.69 ----- z ----- z 54.50
2002 ----- z ----- z 44.90 52.33 54.71 63.02 68.73 67.79 64.32 ----- z 48.12 43.45 56.37
2003 46.00 44.64 48.45 50.15 56.89 65.68 69.82 68.69 64.70 56.58 43.78 41.37 54.73
2004 39.19 44.84 50.31 54.27 57.58 64.13 70.58 70.79 61.38 55.13 44.48 42.37 54.59
2005 41.53 43.39 49.03 50.87 59.00 60.27 68.79 69.56 61.27 55.05 43.45 40.10 53.53
2006 44.74 42.27 45.18 52.37 58.42 64.43 69.98 66.98 64.22 53.15 46.83 40.13 54.06
2007 37.95 44.59 49.66 50.80 57.24 61.92 70.00 67.77 ----- z ----- z ----- z ----- z 54.99
Period of Record Statistics
MEAN 40.07 43.15 46.60 50.10 56.08 61.77 66.91 66.89 62.23 53.15 45.29 40.11 52.60
S.D. 3.30 2.56 2.29 2.51 2.26 2.29 2.16 2.24 2.51 1.85 2.70 2.73 1.19
SKEW -0.68 -0.15 0.11 -0.47 0.26 0.09 -0.08 -0.29 -0.30 0.25 -0.69 -0.64 0.16
MAX 46.00 48.12 51.27 54.97 61.05 66.00 70.58 70.94 67.03 57.18 50.92 44.13 55.06
MIN 31.34 35.52 42.12 43.97 51.98 57.00 62.27 62.30 56.87 49.24 38.10 33.37 50.26
NO YRS 43 44 45 44 45 44 45 45 43 43 43 42 37