HILLSBORO, OREGON

Monthly Average Temperature (Degrees Fahrenheit)

(353908)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200305
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
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 40.56 f 42.84 42.84
1930 25.29 b 44.00 a 47.85 52.98 52.56 57.92 63.03 a 64.91 b 59.48 49.95 a 43.70 c 38.94 f 51.06
1931 42.46 c 41.33 b 46.78 a 52.92 60.39 60.98 a 67.48 a 65.26 58.93 51.50 40.97 38.35 52.28
1932 37.16 40.07 46.03 50.83 55.18 63.85 62.55 65.94 64.20 c 55.67 k 46.16 b 35.72 d 51.61
1933 39.05 38.41 k 44.58 50.63 51.98 d 60.40 65.92 66.82 56.52 53.76 f 43.00 g 44.92 a 53.42
1934 45.59 t 44.96 c 52.62 b 58.64 e 55.53 b 59.22 a 65.24 66.58 60.40 54.21 47.40 41.02 55.08
1935 37.66 42.63 a 41.26 49.95 54.16 59.28 65.71 66.61 61.88 48.42 39.80 38.15 50.46
1936 41.32 a 33.69 42.97 a 52.96 b 59.66 64.45 66.11 66.68 59.80 53.88 a 40.07 41.03 51.89
1937 28.27 40.46 a 47.42 49.15 58.40 63.79 a 66.47 64.57 d 61.45 54.76 d 47.58 42.18 52.04
1938 38.95 41.29 45.00 51.70 58.52 63.67 a 68.63 62.66 b 63.34 a 52.87 41.37 c 39.70 a 52.31
1939 41.44 38.38 c 46.53 52.17 57.23 59.33 66.31 66.11 61.67 52.80 a 44.41 c 43.82 a 52.52
1940 39.98 45.53 50.00 a 52.45 60.26 63.62 a 65.61 67.03 62.77 55.68 43.12 a 41.40 53.96
1941 41.50 44.88 50.98 52.65 56.32 61.41 a 69.74 65.98 57.63 53.32 45.02 40.89 53.36
1942 34.08 41.36 43.73 50.68 54.76 58.82 66.98 65.82 60.65 53.18 43.00 41.69 51.23
1943 32.26 42.59 a 44.02 53.62 54.05 59.95 65.71 63.29 64.50 53.71 43.65 38.26 51.30
1944 38.16 41.20 d 44.56 50.17 56.18 59.97 65.79 64.40 b 63.25 56.63 43.32 37.27 51.74
1945 40.95 43.66 44.21 49.50 57.95 60.50 66.90 65.19 58.47 51.94 44.40 39.89 51.96
1946 39.19 41.20 46.29 50.35 59.10 59.80 65.74 65.52 60.90 50.31 42.50 41.29 51.85
1947 35.50 44.84 49.52 54.52 59.10 60.22 63.69 63.06 61.90 54.15 45.30 40.84 52.72
1948 ----- z ----- z ----- z ----- z ----- z ----- z 65.38 a 63.90 60.57 51.60 a 42.62 b 36.05 a 53.35
1949 27.55 a 38.66 45.71 52.83 a 59.45 62.52 a 66.16 66.27 g 64.97 a 48.08 48.73 40.42 50.46
1950 28.68 a 39.70 44.19 b 48.42 54.68 a 62.90 66.77 a 68.84 63.30 51.06 44.93 46.37 a 51.65
1951 38.55 b 42.61 41.03 53.65 57.39 64.58 68.31 65.81 63.98 53.58 a 45.02 a 37.47 52.66
1952 35.94 40.78 44.31 52.90 57.48 60.28 c 69.58 a 67.33 a 65.21 b 59.17 a 39.25 b 40.72 a 52.75
1953 47.07 a 43.57 45.38 b 49.18 54.71 57.85 66.53 66.36 b 63.67 54.61 48.02 42.29 b 53.27
1954 38.11 43.13 a 44.11 d 49.34 b 57.58 57.71 a 62.95 a 63.10 a 60.32 52.31 b 48.73 40.32 51.48
1955 38.26 40.05 41.15 45.82 52.97 60.48 62.82 64.55 61.68 53.23 41.13 39.00 50.09
1956 40.40 35.67 44.10 53.40 59.94 57.98 68.40 66.45 61.57 51.52 b 42.70 40.19 51.86
1957 30.68 42.25 47.42 52.68 59.61 62.15 65.24 64.37 a 66.55 53.25 a 43.63 43.18 52.58
1958 43.37 48.93 45.66 51.03 62.47 66.52 73.02 70.98 62.73 56.63 45.37 44.52 55.94
1959 41.10 42.04 46.03 51.28 54.32 60.82 67.63 63.77 59.00 53.68 43.80 38.66 51.84
1960 33.63 40.84 44.18 49.75 52.97 63.10 69.45 66.00 62.85 55.37 45.65 39.27 51.92
1961 44.19 46.50 47.21 50.13 56.21 66.40 69.82 72.16 59.78 52.77 42.37 41.19 54.06
1962 38.16 42.27 44.06 51.98 52.10 60.58 65.47 65.13 61.42 52.73 46.52 40.97 51.78
1963 33.56 47.21 44.56 47.62 56.31 60.70 62.26 65.34 65.07 52.98 45.22 g 40.37 52.36
1964 41.60 41.64 43.90 46.80 51.71 58.55 63.92 61.85 57.22 52.48 a 41.02 38.92 49.97
1965 40.16 42.73 46.35 50.20 52.13 58.53 66.65 66.05 58.23 54.55 47.33 37.53 51.70
1966 39.76 41.38 44.97 50.85 55.27 59.20 63.89 63.79 61.25 50.98 47.53 43.56 51.87
1967 43.08 43.18 43.22 a 45.45 54.65 63.47 67.98 72.58 64.60 a 53.90 a 47.30 41.31 53.39
1968 40.35 48.36 48.37 48.10 55.40 60.95 66.39 64.00 60.67 51.16 45.88 38.24 52.32
1969 33.74 40.70 46.58 49.90 58.38 a 66.08 64.61 62.85 61.30 51.34 45.62 41.94 51.92
1970 41.00 46.52 46.98 47.25 55.56 64.20 66.74 65.77 58.02 51.69 45.52 39.71 52.41
1971 40.03 42.50 43.77 49.73 56.56 57.83 67.52 69.18 59.58 50.60 44.78 39.18 51.77
1972 38.18 42.71 48.58 47.02 59.10 62.28 69.32 68.63 58.85 51.71 46.32 35.23 52.33
1973 38.45 44.89 45.82 50.22 57.05 60.95 67.76 62.77 61.71 a 52.10 43.20 43.95 52.41
1974 37.81 41.95 46.73 50.28 53.90 63.08 65.44 67.08 65.08 53.13 46.25 43.18 52.83
1975 41.32 41.07 45.00 46.55 56.15 59.70 66.69 62.89 63.35 52.19 44.27 42.68 51.82
1976 41.60 41.33 43.44 49.22 55.63 58.33 64.60 64.15 62.53 53.48 46.37 38.66 51.61
1977 37.14 f 44.25 43.84 51.90 52.48 62.37 63.79 69.65 60.31 a 53.09 b 43.35 43.06 53.46
1978 41.84 46.16 49.71 50.28 54.45 a 63.95 a 67.50 66.06 59.77 54.48 39.10 35.13 52.37
1979 30.76 41.80 48.76 50.80 56.92 62.38 67.00 a 65.06 63.26 a 55.37 43.83 44.10 52.50
1980 35.81 42.43 45.50 52.23 55.35 57.73 65.82 62.65 60.25 53.21 46.90 42.92 51.73
1981 42.76 42.88 47.42 50.35 55.32 59.60 65.11 69.24 61.90 51.84 47.08 42.56 53.01
1982 37.55 41.77 44.84 46.72 55.06 63.35 64.97 65.45 60.72 52.32 42.66 a 40.34 51.31
1983 42.37 46.05 49.18 51.00 58.60 59.88 63.81 65.61 59.00 51.10 48.02 34.98 52.47
1984 41.23 43.62 48.89 48.45 53.06 59.38 65.65 64.98 59.68 49.81 44.58 36.13 51.29
1985 35.05 39.07 43.39 51.75 55.56 61.20 69.65 64.63 57.73 50.82 36.45 33.77 49.92
1986 42.50 43.21 50.82 49.32 55.47 64.55 62.79 70.18 59.30 54.55 46.18 39.44 53.19
1987 39.94 44.52 47.63 52.83 58.79 63.97 65.35 67.29 63.15 56.19 47.22 37.77 53.72
1988 38.34 43.38 a 46.26 51.32 54.35 61.03 67.16 64.85 60.93 57.08 46.20 39.82 52.56
1989 40.90 34.75 44.69 54.50 56.52 63.42 63.56 64.02 63.17 52.63 46.55 39.21 51.99
1990 42.18 40.32 48.18 53.32 54.74 61.55 68.76 67.81 64.63 51.05 45.22 33.05 52.57
1991 38.42 47.75 44.27 49.88 53.18 58.62 66.76 67.94 64.45 53.66 46.17 40.87 52.66
1992 42.40 48.00 51.29 53.92 60.44 65.60 68.44 67.61 60.22 54.84 45.20 38.42 54.70
1993 35.60 39.59 48.21 51.05 60.06 60.55 61.89 66.47 63.38 55.76 38.72 39.82 51.76
1994 42.98 39.89 49.42 52.30 58.35 60.53 68.42 66.61 64.92 50.90 40.12 41.73 53.01
1995 43.60 45.89 a 47.00 49.48 59.50 62.00 69.15 64.69 65.12 52.45 49.98 41.71 54.21
1996 41.11 40.95 47.42 52.50 54.35 61.83 71.18 68.24 59.95 52.58 44.10 41.08 52.94
1997 40.81 42.96 46.63 50.58 61.95 62.42 68.39 70.24 64.30 53.11 52.87 41.44 54.64
1998 43.79 46.71 50.32 54.32 57.84 65.70 72.21 70.79 67.30 55.16 50.18 40.77 56.26
1999 42.65 45.27 46.56 51.57 55.36 b 61.30 65.57 q ----- z ----- z 50.71 s 50.18 47.45 50.04
2000 40.21 44.26 48.79 58.58 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 47.96
2001 ----- z ----- z ----- z ----- z 60.18 58.28 a 64.52 65.08 60.42 49.26 45.98 f 38.58 m 59.62
2002 38.82 42.00 41.87 51.03 54.94 63.44 c 70.35 k 68.57 p 62.37 o 52.48 46.17 42.77 48.17
2003 44.82 44.20 48.27 50.13 56.98 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 48.88
Period of Record Statistics
MEAN 38.80 42.63 46.20 50.94 56.40 61.40 66.44 66.05 61.67 52.94 44.76 40.32 52.40
S.D. 4.33 2.93 2.52 2.47 2.57 2.34 2.34 2.36 2.40 2.04 3.01 2.82 1.20
SKEW -1.10 -0.38 0.23 0.40 0.21 0.30 0.36 0.72 0.06 0.25 -0.21 -0.25 0.82
MAX 47.07 48.93 52.62 58.64 62.47 66.52 73.02 72.58 67.30 59.17 52.87 47.45 56.26
MIN 25.29 33.69 41.03 45.45 51.71 57.71 61.89 61.85 56.52 48.08 36.45 33.05 49.92
NO YRS 70 71 72 72 72 71 70 69 70 69 69 71 61