PASADENA, CALIFORNIA

Monthly Total Cooling Degree Days

(046719)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1893 0.00 0.00 a 3.50 10.50 15.50 36.50 0.00 z 181.50 34.50 10.50 2.00 0.00 294.50
1894 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 185.50 220.50 187.00 70.50 39.50 0.00 703.00
1895 0.00 0.00 z 3.50 0.00 0.00 z 0.00 z 128.00 158.00 139.00 0.00 z 0.00 z 0.00 z 428.50
1896 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 z 0.00 z 0.00
1897 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 z 0.00 z 0.00
1898 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 z 0.00 z 0.00
1899 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 z 0.00 z 0.00
1900 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 z 0.00 z 0.00
1901 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 z 0.00 z 0.00
1902 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 z 0.00 z 0.00
1903 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 z 0.00 z 0.00
1904 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 z 0.00 z 0.00
1905 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 z 0.00 z 0.00
1906 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 z 0.00 z 0.00
1907 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 z 0.00 z 0.00
1908 0.00 z 0.00 z 0.00 z 0.00 z 8.35 e 58.50 263.50 252.00 192.00 45.50 6.00 0.00 825.85
1909 0.00 0.00 0.00 6.00 22.50 104.50 188.50 276.00 153.50 62.00 12.00 0.00 825.00
1910 0.50 0.00 14.98 a 58.50 68.50 62.50 271.50 205.00 211.50 128.00 0.00 0.50 1021.48
1911 0.00 0.00 1.00 0.00 19.50 50.50 192.00 153.50 48.00 17.50 3.00 0.00 485.00
1912 1.50 0.00 0.00 0.00 35.50 62.50 157.50 110.00 92.00 32.50 2.50 0.00 494.00
1913 0.00 0.00 0.50 20.00 9.00 58.50 156.50 206.50 188.50 37.00 10.50 0.00 687.00
1914 0.00 0.00 34.50 31.50 0.50 55.00 146.50 239.00 167.50 119.50 54.00 0.00 848.00
1915 0.00 0.00 19.50 9.00 21.50 86.00 180.50 257.50 86.50 23.50 1.50 0.00 685.50
1916 0.00 6.00 31.52 a 4.00 0.00 38.50 168.95 a 166.50 76.00 0.50 0.00 0.00 491.97
1917 0.00 0.00 0.00 0.00 1.00 167.50 298.00 190.50 212.50 109.00 11.50 6.50 996.50
1918 0.00 0.00 4.50 9.00 14.00 201.50 200.50 230.00 181.00 119.50 3.50 0.00 963.50
1919 0.00 0.00 0.00 1.50 11.00 137.00 269.50 249.00 152.59 a 12.50 4.50 0.00 837.59
1920 0.00 0.00 0.00 0.00 51.50 74.50 275.50 273.00 123.50 4.50 0.00 0.00 802.50
1921 0.00 8.50 1.00 21.50 2.50 91.00 271.00 212.00 133.00 67.50 22.00 0.00 830.00
1922 0.00 0.00 0.00 a 3.00 37.00 149.50 222.50 301.00 273.00 30.50 0.00 0.00 1016.50
1923 6.72 a 1.50 3.10 a 2.00 51.00 43.00 188.00 201.50 196.50 53.50 6.50 0.00 753.32
1924 0.00 3.00 0.00 6.50 54.00 139.66 a 222.00 206.00 245.00 23.00 55.34 a 3.00 957.50
1925 0.00 0.50 9.50 20.00 5.17 a 159.00 319.50 229.50 144.50 41.50 0.50 1.00 930.67
1926 0.00 12.50 24.00 36.00 68.00 98.50 l 230.12 e 267.50 110.89 b 117.05 b 72.41 a 0.00 c 938.47
1927 0.00 0.00 4.00 27.50 66.00 98.28 a 330.00 269.00 142.00 89.50 f 35.50 5.50 977.78
1928 2.00 0.00 5.00 19.00 68.50 76.50 231.00 246.00 278.50 57.00 1.50 0.00 985.00
1929 0.00 0.00 0.00 1.00 43.50 149.50 303.50 418.50 190.00 160.00 28.45 a 4.00 1298.45
1930 0.00 12.00 25.50 39.00 29.00 105.00 291.00 310.00 92.50 87.50 68.00 0.00 1059.50
1931 3.00 0.00 39.00 57.00 90.50 144.00 422.50 370.00 187.00 103.00 29.50 0.00 1445.50
1932 0.00 7.50 4.50 26.50 29.50 103.50 178.50 209.50 136.50 44.00 46.50 0.00 786.50
1933 0.00 0.00 0.00 d 3.00 19.50 92.00 243.00 251.00 52.50 118.12 b 62.00 0.00 841.12
1934 0.00 0.00 36.00 31.00 106.00 46.50 306.50 274.50 255.50 101.00 11.50 0.50 1169.00
1935 0.50 9.50 1.50 3.50 19.50 102.00 237.50 328.00 187.50 42.00 0.00 0.00 931.50
1936 0.00 2.50 15.00 17.00 41.50 176.50 336.50 310.00 187.50 89.00 45.00 0.00 1220.50
1937 0.00 0.00 0.00 8.50 56.00 114.00 278.50 280.50 264.00 105.00 2.00 0.00 1108.50
1938 0.00 0.00 0.00 24.83 a 49.00 79.00 225.00 333.00 309.50 61.50 0.00 22.00 1103.83
1939 0.00 0.00 0.00 29.00 29.00 91.50 239.00 295.50 318.50 122.50 6.72 a 9.50 1141.22
1940 0.00 0.00 h 0.00 37.00 75.50 79.50 232.00 227.00 134.50 115.00 4.00 10.00 914.50
1941 0.00 0.00 3.00 0.00 94.00 51.00 239.00 199.00 71.50 74.50 45.50 0.00 777.50
1942 0.00 0.00 0.00 a 0.00 31.50 61.00 276.00 225.00 110.00 83.00 27.00 1.50 815.00
1943 0.00 10.50 0.00 13.00 56.00 85.50 212.50 232.50 235.00 121.50 2.50 0.00 969.00
1944 1.00 0.00 0.00 0.00 18.50 j 29.50 104.00 260.50 176.00 33.50 1.00 0.00 605.50
1945 0.00 0.00 7.00 3.00 12.50 49.50 247.50 312.00 274.00 85.00 20.00 2.50 1013.00
1946 1.00 0.00 6.00 29.00 9.00 131.50 282.00 204.50 i 285.50 41.00 2.00 0.50 f 787.00
1947 0.00 2.50 8.61 d 46.00 54.50 76.00 278.00 225.50 263.00 49.50 0.00 1.50 1005.11
1948 1.50 4.50 0.00 22.50 27.50 47.00 169.00 181.50 228.00 76.00 1.00 0.00 758.50
1949 0.00 b 0.00 c 0.00 26.50 44.00 124.50 207.00 190.50 f 249.50 72.00 99.00 0.50 823.00
1950 0.00 0.00 7.50 17.50 7.50 66.50 262.50 213.00 108.00 142.50 59.50 8.50 893.00
1951 8.00 2.00 3.50 4.00 27.50 56.00 265.00 229.50 209.00 97.50 10.50 0.00 912.50
1952 0.00 0.00 2.50 10.00 50.50 28.50 255.00 292.00 310.50 84.50 14.50 1.50 1049.50
1953 5.50 6.50 5.00 0.00 33.00 79.50 335.50 209.50 201.50 123.00 38.00 0.50 1037.50
1954 3.00 33.00 0.00 14.50 15.00 75.50 381.00 220.50 217.00 63.00 26.50 0.00 1049.00
1955 0.00 0.00 8.50 7.00 32.00 68.00 191.50 367.50 302.50 45.50 24.50 0.00 1047.00
1956 0.00 0.00 5.00 15.50 51.50 143.50 246.50 228.00 355.00 51.50 55.50 0.00 1152.00
1957 0.00 22.50 9.00 13.00 22.50 250.00 350.00 342.00 218.00 40.50 0.00 1.00 1268.50
1958 0.00 a 0.00 0.00 70.00 89.00 143.50 253.50 339.34 c 342.50 236.50 17.00 29.50 1520.84
1959 5.34 b 0.00 a 18.50 f 71.00 16.00 204.50 414.50 334.50 235.00 134.50 36.00 4.00 1455.34
1960 0.00 g 0.00 17.00 66.50 116.50 141.00 f 382.50 288.50 358.00 108.50 0.00 1.00 1338.50
1961 10.50 1.50 3.00 53.00 11.50 168.50 308.00 341.50 196.50 139.50 20.77 d 0.00 1254.27
1962 13.00 0.00 0.00 74.50 37.00 107.50 203.00 343.00 228.00 81.50 22.50 0.00 1110.00
1963 0.00 35.00 0.00 3.00 19.00 66.00 241.50 307.50 380.50 109.50 17.00 6.50 1185.50
1964 2.00 0.00 11.50 34.00 30.50 78.50 295.00 310.50 181.50 209.00 19.50 0.00 1172.00
1965 8.50 2.00 2.50 77.00 45.00 22.00 222.50 371.50 126.50 235.50 13.00 5.50 1131.50
1966 0.00 0.00 17.00 53.50 38.00 163.00 285.00 356.00 257.00 134.50 30.00 0.00 1334.00
1967 0.00 6.00 6.00 0.00 113.00 74.00 345.00 471.00 305.00 197.50 43.00 0.00 1560.50
1968 0.00 16.50 19.50 30.50 72.50 141.00 318.50 265.50 264.50 81.50 20.00 0.00 1230.00
1969 11.00 0.00 15.50 17.00 64.50 41.50 295.50 410.50 270.00 68.00 36.00 2.50 1232.00
1970 0.00 3.50 6.00 7.00 96.50 155.00 338.00 361.00 249.00 73.50 6.00 0.00 1295.50
1971 37.50 21.50 7.50 27.50 22.00 139.50 328.00 434.50 323.00 180.00 10.50 0.00 1531.50
1972 0.00 2.00 23.00 19.50 103.50 172.00 377.00 362.50 227.00 71.00 1.00 7.50 1366.00
1973 2.00 0.00 0.00 5.50 81.00 248.00 262.50 296.00 155.00 141.50 0.00 z 2.58 a 1194.08
1974 0.00 0.00 2.67 b 27.00 54.00 201.50 317.50 250.50 285.00 98.00 25.34 a 0.00 1261.52
1975 12.00 0.00 a 0.00 0.00 34.00 64.50 263.50 244.50 306.50 76.98 a 13.50 3.00 1018.48
1976 14.50 2.00 11.00 8.00 66.00 212.00 257.50 230.50 196.00 155.50 94.50 0.00 1247.50
1977 0.00 30.00 0.00 17.50 14.50 139.00 309.00 333.50 201.00 148.00 63.50 3.00 1259.00
1978 0.00 0.00 34.00 0.00 z 137.00 233.00 308.00 267.50 285.00 194.50 21.50 0.00 1480.50
1979 0.00 0.00 0.00 z 11.50 74.00 219.00 275.50 263.50 385.50 79.50 5.50 18.50 1332.50
1980 0.00 19.00 1.00 60.00 30.00 163.00 391.50 321.50 187.00 146.50 31.00 17.00 1367.50
1981 0.50 31.00 0.00 43.50 53.00 344.00 364.00 405.00 280.50 72.00 30.50 0.00 1624.00
1982 0.00 5.50 2.00 23.50 41.50 35.00 328.50 404.00 291.00 151.00 3.00 0.00 1285.00
1983 6.00 0.00 4.00 2.50 83.00 106.00 278.00 406.00 364.50 165.00 15.00 0.00 1430.00
1984 24.50 1.50 12.00 52.50 226.00 178.00 424.50 391.50 475.00 67.50 0.00 0.00 1853.00
1985 0.00 9.00 0.50 83.50 43.00 239.00 427.00 340.50 201.50 132.50 18.50 2.50 1497.50
1986 13.00 28.00 47.50 46.50 106.00 188.00 271.00 383.00 118.00 94.00 27.50 0.00 1322.50
1987 2.50 7.00 6.50 119.00 130.50 179.50 198.00 275.00 304.00 188.50 15.50 2.00 1428.00
1988 2.00 16.00 60.50 71.50 121.50 143.50 339.50 278.50 252.00 177.50 22.00 4.00 1488.50
1989 0.50 16.50 21.00 104.00 55.00 154.00 326.00 240.50 295.00 99.50 37.00 1.00 1350.00
1990 4.00 4.50 24.50 37.50 53.50 243.00 380.00 280.50 310.00 224.50 52.00 0.00 1614.00
1991 0.50 27.50 0.00 51.50 60.50 102.50 247.00 322.00 350.50 305.00 81.00 0.00 1548.00
1992 3.00 35.00 0.00 108.00 98.00 171.50 342.00 454.50 339.50 156.50 18.50 0.00 1726.50
1993 0.00 0.00 27.50 61.00 122.00 241.00 237.50 311.50 302.00 166.00 16.00 1.00 1485.50
1994 3.50 0.00 29.00 54.50 39.00 257.50 238.00 466.00 296.00 87.00 2.50 0.00 1473.00
1995 2.00 55.50 8.00 26.50 29.50 147.50 338.50 419.00 389.00 183.00 35.00 0.00 1633.50
1996 2.50 14.00 16.50 119.00 122.00 241.00 358.00 389.00 231.50 110.00 26.00 0.00 1629.50
1997 1.00 5.00 60.50 70.50 200.50 181.50 299.50 429.50 451.00 168.00 54.50 1.00 1922.50
1998 0.00 0.00 10.00 57.50 7.50 100.50 391.50 513.50 250.50 97.50 0.00 4.00 1432.50
1999 0.00 2.00 0.00 54.00 43.50 151.00 341.50 347.72 a 261.21 a 290.00 21.50 0.00 b 1512.42
2000 4.50 7.25 a 12.92 a 94.50 177.50 280.00 321.37 a 437.00 323.00 66.13 a 0.00 a 11.62 c 1735.79
2001 0.00 8.30 a 29.00 34.14 a 168.43 a 279.60 e 300.18 a 360.00 305.00 154.47 b 21.96 b 0.00 b 1661.08
2002 0.00 25.00 2.50 21.50 66.00 202.00 316.50 297.00 368.00 66.50 58.50 0.00 b 1423.50
2003 60.50 8.00 35.50 20.00 104.50 120.50 418.00 460.50 325.00 282.50 4.00 0.00 1839.00
2004 1.00 0.50 96.50 87.50 175.50 168.00 333.50 315.50 356.50 104.50 1.50 5.00 1645.50
2005 12.50 0.00 4.17 e 28.50 141.50 j 127.50 368.50 370.00 198.50 g 126.50 55.50 9.50 1102.67
2006 4.50 24.00 1.00 15.00 102.00 323.00 540.00 337.50 312.50 101.50 91.00 0.00 f 1852.00
2007 2.50 22.50 55.28 a 37.80 e 64.00 182.00 378.50 427.50 276.50 164.00 45.50 0.50 1656.58
2008 0.00 9.00 33.50 119.50 119.00 292.50 338.50 404.50 359.00 309.00 102.50 4.00 2091.00
2009 37.50 10.00 27.50 82.00 162.50 123.50 422.50 407.50 446.00 164.50 47.50 0.50 1931.50
2010 2.00 12.50 42.00 17.50 61.00 174.00 287.50 369.50 350.50 147.00 82.00 13.00 1558.50
2011 31.00 a 2.50 28.50 73.50 75.50 122.50 347.00 398.50 326.00 196.00 16.55 a 1.00 1618.55
2012 31.50 7.50 17.00 68.00 133.00 194.00 325.50 527.00 495.00 232.00 54.00 0.00 2084.50
2013 3.00 4.50 42.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 50.00
Period of Record Statistics
MEAN 3.80 6.45 12.21 32.42 59.59 132.75 285.16 304.91 241.58 111.00 25.27 2.30 1231.24
S.D. 9.21 10.37 16.82 30.77 46.98 71.64 75.54 85.36 95.77 65.94 25.33 4.87 358.36
SKEW 3.76 2.11 2.11 1.07 1.21 0.66 0.24 0.31 0.11 0.86 1.14 3.21 0.19
MAX 60.50 55.50 96.50 119.50 226.00 344.00 540.00 527.00 495.00 309.00 102.50 29.50 2091.00
MIN 0.00 0.00 0.00 0.00 0.00 22.00 104.00 110.00 34.50 0.50 0.00 0.00 485.00
NO YRS 107 106 105 105 104 104 107 106 107 106 106 105 91