N WILLAMETTE EXP STN, OREGON

Monthly Average Maximum 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 41.07 a 57.39 54.06 ----- z 67.77 69.80 72.97 77.39 76.57 63.84 53.31 a 47.03 a 61.93
1964 47.90 49.90 52.26 57.60 63.10 68.90 76.68 75.61 69.79 b 65.35 47.87 44.77 59.98
1965 44.94 49.67 a 59.13 61.27 63.52 72.10 82.00 79.77 74.43 66.16 54.87 44.00 62.65
1966 45.26 50.04 53.39 63.13 70.61 73.67 76.57 a 79.94 75.60 63.13 55.13 49.65 63.01
1967 48.74 52.04 51.68 55.27 67.52 76.53 83.61 89.19 80.93 63.00 55.47 46.90 64.24
1968 46.29 57.86 57.03 58.13 65.29 72.53 80.74 76.90 72.07 b 61.50 a 53.93 44.26 d 62.21
1969 38.71 47.68 c 58.68 59.10 69.72 b 76.59 a 78.10 a 76.50 c 73.24 a 59.81 54.57 b 48.67 a 61.78
1970 46.97 a 55.39 55.23 55.40 67.16 77.03 83.16 82.68 70.13 62.52 54.50 45.74 62.99
1971 44.94 49.00 50.61 57.73 66.58 66.37 80.19 82.93 b 70.57 59.87 50.77 44.90 a 60.37
1972 43.84 49.72 55.90 55.20 69.65 72.73 82.97 83.03 70.93 63.52 53.53 41.19 61.85
1973 44.61 52.93 53.44 d 60.63 68.87 72.00 82.52 77.06 74.67 60.84 49.27 49.71 62.21
1974 43.58 47.14 54.42 57.47 62.74 74.55 a 76.87 81.16 83.43 68.52 54.07 49.29 62.77
1975 48.03 48.29 52.41 b 54.73 66.23 71.57 80.26 75.03 79.57 60.29 51.93 a 48.58 61.41
1976 47.84 49.55 52.42 58.73 67.13 69.07 78.13 73.94 74.52 a 64.57 a 55.93 44.23 61.34
1977 46.45 53.64 51.52 63.73 61.68 75.07 78.48 84.94 70.20 63.58 50.48 c 49.53 a 62.44
1978 46.34 b 52.32 59.16 59.03 63.97 76.07 b 80.14 b 78.55 68.77 67.32 48.60 43.21 c 61.96
1979 39.00 47.54 58.48 59.20 68.16 76.63 82.48 78.35 76.37 66.74 51.37 51.10 62.95
1980 44.23 50.45 53.74 62.27 64.39 67.80 79.81 77.19 74.90 67.26 54.20 48.71 62.08
1981 50.19 51.68 57.61 60.56 c 65.48 70.83 80.00 84.87 76.33 63.03 55.45 a 49.58 63.80
1982 43.29 49.68 55.35 57.47 69.06 75.97 78.23 79.97 73.33 63.97 52.13 47.39 62.15
1983 49.16 53.71 57.65 62.27 70.52 70.43 74.68 79.61 72.47 63.35 53.97 a 41.32 62.43
1984 50.29 53.90 58.19 57.57 64.35 70.33 80.87 81.29 73.53 59.03 51.87 43.45 62.06
1985 44.10 48.43 54.42 62.73 67.81 75.33 87.13 79.77 70.23 62.71 44.57 42.87 61.68
1986 50.97 50.39 60.94 59.77 66.42 78.00 75.10 86.74 70.53 66.00 54.30 47.94 63.92
1987 47.81 54.07 56.58 65.47 71.16 77.87 77.68 82.87 78.83 73.16 54.63 44.03 65.35
1988 45.65 52.69 56.71 61.27 64.68 72.67 82.16 81.45 77.57 67.97 53.13 46.23 63.51
1989 47.48 43.82 53.19 66.47 67.77 76.33 76.23 76.45 80.47 63.58 54.07 45.06 62.58
1990 49.84 48.75 59.03 64.03 65.42 72.20 84.81 81.84 78.73 61.61 53.83 40.16 63.35
1991 47.77 56.86 53.61 58.70 61.84 ----- z 82.84 82.65 80.73 68.10 53.67 46.32 63.01
1992 50.32 56.93 63.68 64.17 76.03 80.27 82.58 84.84 74.13 65.84 52.13 44.90 66.32
1993 43.29 49.86 57.61 59.20 70.55 71.23 72.68 80.26 80.17 68.87 48.93 46.48 62.43
1994 49.87 49.68 60.19 61.97 69.94 72.07 84.68 81.65 79.23 64.26 47.43 48.61 64.13
1995 51.19 56.04 a 58.16 60.07 71.39 73.83 81.81 78.10 77.63 62.65 57.97 49.23 64.84
1996 46.81 50.76 58.26 61.60 63.10 74.73 86.06 83.45 72.70 62.71 51.67 47.77 63.30
1997 47.94 52.43 55.06 59.60 73.55 71.60 80.45 83.61 77.00 61.45 57.70 46.74 63.93
1998 50.26 54.32 57.48 62.30 63.42 74.37 82.84 83.74 80.60 63.87 52.47 28.73 a 62.87
1999 48.14 b 49.39 52.29 60.53 63.13 68.97 78.97 78.58 79.13 65.45 55.20 48.90 62.39
2000 46.39 50.03 53.23 62.43 64.94 77.23 78.74 80.39 ----- z 63.23 50.73 46.97 61.30
2001 48.65 51.32 56.52 56.47 72.03 70.33 78.23 80.61 77.50 62.45 ----- z ----- z 65.41
2002 ----- z ----- z 52.55 62.33 64.74 74.87 82.52 82.74 78.40 ----- z 57.63 49.77 67.28
2003 52.94 52.86 55.39 57.80 67.00 78.53 85.10 82.87 77.83 65.23 50.37 46.84 64.40
2004 43.65 51.97 60.84 67.00 66.87 75.80 84.45 82.97 71.40 64.19 50.50 47.23 63.90
2005 47.35 53.32 59.74 59.53 67.61 69.07 81.61 84.55 74.87 62.39 51.87 45.23 63.09
2006 49.42 49.93 52.81 62.60 69.61 74.60 83.42 81.39 78.43 64.32 52.50 46.16 63.77
2007 44.32 51.04 58.16 60.43 69.45 73.03 82.42 80.39 ----- z ----- z ----- z ----- z 64.91
Period of Record Statistics
MEAN 46.72 51.46 55.97 60.29 67.15 73.40 80.49 80.84 75.55 64.12 52.76 46.03 62.88
S.D. 3.12 3.00 3.04 2.96 3.24 3.20 3.37 3.22 3.76 2.78 2.82 3.73 1.26
SKEW -0.53 0.21 0.26 0.17 0.41 -0.07 -0.38 0.03 -0.02 0.78 -0.56 -2.38 0.35
MAX 52.94 57.86 63.68 67.00 76.03 80.27 87.13 89.19 83.43 73.16 57.97 51.10 66.32
MIN 38.71 43.82 50.61 54.73 61.68 66.37 72.68 73.94 68.77 59.03 44.57 28.73 59.98
NO YRS 44 44 45 44 45 44 45 45 43 43 43 43 39