HILLSBORO, OREGON

Monthly Total Cooling Degree Days

(353908)

Base Temperature = 65 F

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.
Months with 5 missing days or less use mean for missing day(s)
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 f 0.00 0.00
1930 0.00 b 0.00 a 0.00 0.00 0.00 4.00 34.62 a 65.74 b 9.00 0.00 a 0.00 c 0.00 f 113.36
1931 0.00 c 0.00 b 0.00 a 2.00 32.50 20.17 a 94.55 a 59.50 23.00 0.00 0.00 0.00 231.72
1932 0.00 0.00 0.00 0.00 0.00 74.50 7.50 81.00 56.11 c 9.50 k 0.00 b 0.00 d 219.11
1933 0.00 0.00 k 0.00 0.00 0.00 d 20.00 66.50 107.00 0.00 0.00 f 0.00 g 0.00 a 193.50
1934 0.00 t 0.00 c 0.00 b 4.80 e 0.00 b 10.86 a 46.00 75.50 47.00 0.00 0.00 0.00 184.16
1935 0.00 0.00 a 0.00 0.00 0.00 32.00 112.50 99.50 30.00 0.00 0.00 0.00 274.00
1936 0.00 a 0.00 0.00 a 0.00 b 21.50 57.00 49.50 75.00 1.00 0.00 a 0.00 0.00 204.00
1937 0.00 0.00 a 0.00 0.00 10.50 43.45 a 77.00 57.41 d 26.00 0.00 d 0.00 0.00 214.36
1938 0.00 0.00 0.00 0.00 26.00 40.34 a 142.50 9.09 b 18.62 a 0.00 0.00 c 0.00 a 236.55
1939 0.00 0.00 c 0.00 0.00 9.00 10.50 108.50 87.00 24.00 0.00 a 0.00 c 0.00 a 239.00
1940 0.00 0.00 0.00 a 0.00 12.00 59.48 a 49.00 90.00 18.00 5.50 0.00 a 0.00 233.98
1941 0.00 0.00 0.00 0.00 20.50 23.79 a 161.50 80.00 0.00 0.00 0.00 0.00 285.79
1942 0.00 0.00 0.00 0.00 5.00 21.00 101.50 94.00 0.50 0.00 0.00 0.00 222.00
1943 0.00 0.00 a 0.00 0.00 1.00 17.50 65.50 17.00 42.50 3.50 0.00 0.00 147.00
1944 0.00 0.00 d 0.00 0.00 10.50 10.50 83.00 45.97 b 60.50 0.00 0.00 0.00 210.47
1945 0.00 0.00 0.00 0.00 4.00 30.00 105.50 56.00 3.50 0.00 0.00 0.00 199.00
1946 0.00 0.00 0.00 0.00 3.50 24.00 75.00 80.50 14.00 0.00 0.00 0.00 197.00
1947 0.00 0.00 0.00 2.00 9.00 7.00 21.50 24.50 20.00 3.00 0.00 0.00 87.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 67.68 a 28.00 33.00 0.00 a 0.00 b 0.00 a 128.68
1949 0.00 a 0.00 0.00 0.00 a 22.00 31.55 a 84.00 57.00 g 63.62 a 0.00 0.00 0.00 201.17
1950 0.00 a 0.00 0.00 b 0.00 1.03 a 48.50 85.25 a 146.50 52.00 0.00 0.00 0.00 a 333.28
1951 0.00 b 0.00 0.00 0.00 5.00 65.50 118.00 70.50 55.50 0.00 a 0.00 a 0.00 314.50
1952 0.00 0.00 0.00 0.00 12.00 7.78 c 154.48 a 105.40 a 83.04 b 11.88 a 0.00 b 0.00 a 374.58
1953 0.00 a 0.00 0.00 b 0.00 3.50 2.50 84.50 84.45 b 49.00 0.50 0.00 0.00 b 224.45
1954 0.00 0.00 a 0.00 d 0.00 b 7.00 0.00 a 16.53 a 18.08 a 16.50 0.00 b 0.00 0.00 58.12
1955 0.00 0.00 0.00 0.00 3.00 33.00 39.00 54.50 54.00 0.00 0.00 0.00 183.50
1956 0.00 0.00 0.00 3.00 49.50 4.50 142.00 92.00 7.50 0.00 b 0.00 0.00 298.50
1957 0.00 0.00 0.00 8.00 16.50 22.00 47.00 26.35 a 80.50 1.03 a 0.00 0.00 201.38
1958 0.00 0.00 0.00 0.00 55.50 110.00 249.00 187.50 52.00 11.50 0.00 0.00 665.50
1959 0.00 0.00 0.00 0.00 0.00 24.50 135.50 38.50 9.50 0.00 0.00 0.00 208.00
1960 0.00 0.00 0.00 0.00 0.00 27.00 168.50 87.50 34.50 0.00 0.00 0.00 317.50
1961 0.00 0.00 0.00 0.00 8.50 117.50 171.50 223.00 9.00 4.00 0.00 0.00 533.50
1962 0.00 0.00 0.00 0.00 0.00 18.50 93.00 44.50 13.50 0.00 0.00 0.00 169.50
1963 0.00 0.00 0.00 0.00 16.00 50.50 17.00 67.50 59.50 0.00 0.00 g 0.00 210.50
1964 0.00 0.00 0.00 0.00 1.50 1.50 53.50 29.50 0.00 0.00 a 0.00 0.00 86.00
1965 0.00 0.00 0.00 0.00 0.00 5.50 103.50 86.50 1.50 0.00 0.00 0.00 197.00
1966 0.00 0.00 0.00 0.00 8.00 12.50 35.50 32.50 15.00 0.00 0.00 0.00 103.50
1967 0.00 0.00 0.00 a 0.00 1.00 47.50 102.50 236.50 31.03 a 0.00 a 0.00 0.00 418.53
1968 0.00 0.00 0.00 0.00 0.00 16.00 87.00 45.00 13.00 0.00 0.00 0.00 161.00
1969 0.00 0.00 0.00 0.00 5.17 a 84.00 42.00 21.50 28.50 0.00 0.00 0.00 181.17
1970 0.00 0.00 0.00 0.00 3.50 83.00 98.00 61.00 0.50 0.00 0.00 0.00 246.00
1971 0.00 0.00 0.00 0.00 4.50 8.00 130.50 144.00 4.50 0.00 0.00 0.00 291.50
1972 0.00 0.00 0.00 0.00 16.00 19.50 161.50 140.50 21.00 0.00 0.00 0.00 358.50
1973 0.00 0.00 0.00 0.00 16.00 39.00 119.50 39.00 28.97 a 0.00 0.00 0.00 242.47
1974 0.00 0.00 0.00 0.00 0.00 41.00 75.50 111.00 63.50 0.00 0.00 0.00 291.00
1975 0.00 0.00 0.00 0.00 4.00 13.00 98.50 26.50 36.00 0.00 0.00 0.00 178.00
1976 0.00 0.00 0.00 0.00 0.50 8.00 47.00 39.00 12.50 2.50 0.00 0.00 109.50
1977 0.00 f 0.00 0.00 0.00 0.00 24.00 40.00 187.50 6.21 a 0.00 b 0.00 0.00 257.71
1978 0.00 0.00 0.00 0.00 3.10 a 48.10 a 115.00 78.50 10.00 1.00 0.00 0.00 255.70
1979 0.00 0.00 0.00 2.00 1.50 34.50 111.60 a 35.00 31.03 a 0.00 0.00 0.00 215.63
1980 0.00 0.00 0.00 1.50 0.00 1.50 68.50 25.50 12.00 2.50 0.00 0.00 111.50
1981 0.00 0.00 0.00 2.50 3.00 13.50 74.50 168.00 36.50 0.00 0.00 0.00 298.00
1982 0.00 0.00 0.00 0.00 2.50 73.00 66.50 75.50 26.50 0.00 0.00 a 0.00 244.00
1983 0.00 0.00 0.00 0.00 39.50 10.00 40.50 52.00 2.00 0.00 0.00 0.00 144.00
1984 0.00 0.00 0.00 0.00 3.00 15.50 73.00 49.50 10.00 0.50 0.00 0.00 151.50
1985 0.00 0.00 0.00 0.00 4.00 28.00 154.50 52.00 0.00 0.00 0.00 0.00 238.50
1986 0.00 0.00 0.00 0.00 29.50 73.00 21.00 162.50 35.50 0.00 0.00 0.00 321.50
1987 0.00 0.00 0.00 1.00 33.50 77.00 73.50 103.50 51.00 6.00 0.00 0.00 345.50
1988 0.00 0.00 a 0.00 0.00 5.50 29.50 103.00 67.00 40.50 9.50 0.00 0.00 255.00
1989 0.00 0.00 0.00 2.00 7.00 56.50 31.50 33.00 24.00 0.00 0.00 0.00 154.00
1990 0.00 0.00 0.00 1.00 2.50 26.00 145.00 120.00 43.00 0.00 0.00 0.00 337.50
1991 0.00 0.00 0.00 0.00 0.00 7.50 93.50 123.50 64.50 0.00 0.00 0.00 289.00
1992 0.00 0.00 0.00 0.00 36.50 100.00 127.00 113.50 17.00 0.00 0.00 0.00 394.00
1993 0.00 0.00 0.00 0.00 21.50 14.00 5.00 91.50 54.00 1.00 0.00 0.00 187.00
1994 0.00 0.00 0.00 0.00 12.50 19.50 134.50 65.00 58.00 0.00 0.00 0.00 289.50
1995 0.00 0.00 a 0.00 0.00 20.00 39.00 143.00 53.00 55.00 0.00 0.00 0.00 310.00
1996 0.00 0.00 0.00 0.50 0.50 18.00 216.00 135.50 12.00 6.50 0.00 0.00 389.00
1997 0.00 0.00 0.00 0.00 41.50 21.00 119.00 167.00 54.00 0.00 0.00 0.00 402.50
1998 0.00 0.00 0.00 17.00 16.50 55.50 225.50 190.50 103.00 0.00 0.00 0.00 608.00
1999 0.00 0.00 0.00 2.00 17.10 b 37.00 39.50 q 0.00 z 0.00 z 0.00 s 0.00 0.00 56.10
2000 0.00 0.00 0.00 6.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6.50
2001 0.00 z 0.00 z 0.00 z 0.00 z 29.00 10.86 a 44.00 57.50 14.00 0.00 0.00 f 0.00 m 155.36
2002 0.00 0.00 0.00 0.00 1.50 66.67 c 118.00 k 70.00 p 10.00 o 0.00 0.00 0.00 68.17
2003 0.00 0.00 0.00 0.00 19.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 19.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.77 10.76 33.06 92.21 82.58 29.74 1.02 0.00 0.00 256.88
S.D. 0.00 0.00 0.00 2.42 12.95 27.23 51.71 51.66 23.64 2.58 0.00 0.00 115.23
SKEW 0.00 0.00 0.00 4.92 1.52 1.17 0.67 1.03 0.72 2.94 0.00 0.00 1.24
MAX 0.00 0.00 0.00 17.00 55.50 117.50 249.00 236.50 103.00 11.88 0.00 0.00 665.50
MIN 0.00 0.00 0.00 0.00 0.00 0.00 5.00 9.09 0.00 0.00 0.00 0.00 58.12
NO YRS 70 71 72 72 72 71 70 69 70 69 69 71 61