LOS ANGELES INTL AP, CALIFORNIA

Monthly Total Heating Degree Days

(045114)

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
1944 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6.72 a 16.03 a 96.74 b 229.50 268.00 616.99
1945 355.50 287.00 375.74 b 241.50 159.00 67.00 10.50 0.00 c 8.50 f 58.12 c 253.33 c 322.92 a 2130.62
1946 330.67 a 379.00 299.15 a 192.22 c 153.50 20.50 0.00 1.00 5.36 b 117.59 b 247.50 331.00 2077.48
1947 431.42 a 227.00 196.33 a 165.52 a 78.50 g 17.31 d 8.86 c 4.28 b 4.66 a 36.00 k 147.00 m 308.97 a 1364.33
1948 330.09 d 358.36 a 345.81 b 199.66 a 151.38 a 53.28 a 9.00 4.43 c 32.59 a 81.00 170.00 380.78 a 2116.37
1949 558.00 382.00 332.00 143.00 97.00 2.50 1.03 a 2.30 d 6.21 a 98.50 126.21 a 358.22 d 2106.97
1950 379.00 i 331.13 e 290.37 a 158.00 160.88 b 53.50 f 0.00 c 8.94 e 11.79 b 49.00 120.50 g 184.34 c 1194.44
1951 340.47 b 319.20 c 150.00 l 134.50 i 141.71 c 28.85 d 3.88 c 2.38 e 0.50 30.00 138.75 b 345.13 a 1350.87
1952 394.22 a 235.62 e 344.88 c 130.00 j 83.59 c 64.50 28.79 c 1.07 b 17.50 60.00 222.00 303.28 a 1755.44
1953 205.00 219.00 262.47 a 234.50 129.17 a 42.00 1.00 0.50 33.10 a 67.50 131.50 264.00 1589.74
1954 357.00 149.50 287.50 180.00 106.50 23.79 a 0.00 0.00 4.50 84.00 112.00 234.50 1539.29
1955 405.00 274.00 185.50 194.00 131.00 42.50 4.00 0.00 13.50 100.50 173.00 292.50 1815.50
1956 322.50 357.50 204.08 a 191.00 58.00 j 11.00 0.00 0.00 0.00 d 48.05 a 65.50 195.09 b 1394.72
1957 349.02 b 174.46 b 164.82 a 153.62 a 61.48 a 0.00 0.00 0.00 0.50 18.50 150.50 141.00 1213.90
1958 182.00 139.00 220.50 75.00 5.00 0.00 0.00 0.00 0.00 0.00 67.00 124.50 813.00
1959 157.50 216.00 61.00 20.00 16.50 0.00 0.00 0.00 0.00 3.50 44.50 179.00 698.00
1960 363.50 281.00 234.00 137.00 59.50 5.50 6.00 0.00 0.00 61.50 203.00 314.50 1665.50
1961 195.00 200.50 253.00 163.00 130.00 26.50 0.00 0.50 1.50 57.50 189.00 340.50 1557.00
1962 282.50 315.00 353.50 145.50 115.00 65.50 4.00 0.00 0.00 41.00 162.00 261.00 1745.00
1963 304.50 128.50 261.50 232.00 68.00 18.50 0.00 0.00 0.00 3.00 112.00 225.00 1353.00
1964 303.00 261.50 291.00 222.00 203.50 86.00 11.50 0.00 9.50 24.00 204.00 306.50 1922.50
1965 300.50 275.50 234.50 202.00 139.00 65.50 15.00 0.00 1.00 11.00 135.00 311.00 1690.00
1966 356.50 337.50 233.00 117.50 52.00 9.50 0.00 0.00 0.00 1.00 108.00 233.00 1448.00
1967 262.50 158.50 178.50 270.00 70.00 66.00 1.00 0.00 0.00 4.00 53.00 337.50 1401.00
1968 244.50 124.00 143.50 121.00 67.50 7.50 5.00 0.00 1.00 29.50 110.00 332.50 1186.00
1969 256.50 311.50 272.00 148.00 68.00 10.50 0.00 0.00 4.00 31.50 65.50 206.00 1373.50
1970 251.00 126.50 175.50 173.00 78.00 14.00 0.00 1.00 5.50 22.50 125.50 279.50 1252.00
1971 315.50 241.00 255.00 198.00 135.00 38.50 0.00 0.00 3.00 97.50 186.00 380.00 1849.50
1972 343.00 236.50 169.00 109.00 59.00 1.00 0.00 0.00 0.00 18.00 145.00 256.50 1337.00
1973 323.50 182.50 295.50 153.00 94.00 13.50 0.00 0.00 2.00 28.00 166.50 214.00 1472.50
1974 331.50 214.00 261.50 162.50 69.50 4.00 0.00 0.00 0.00 28.00 108.00 285.50 1464.50
1975 265.50 264.00 288.00 250.50 122.00 28.50 0.00 0.00 0.00 34.50 151.00 235.00 1639.00
1976 183.50 208.50 213.00 212.00 55.50 17.00 0.00 0.00 0.00 6.00 66.00 156.50 1118.00
1977 234.00 136.00 278.50 118.50 120.00 17.00 1.50 0.00 0.00 19.50 65.50 130.50 1121.00
1978 200.00 191.50 122.00 176.00 50.50 4.00 1.50 0.00 0.00 6.00 183.50 333.00 1268.00
1979 324.00 303.00 241.50 145.00 76.50 1.50 0.50 0.00 0.00 21.50 126.50 157.50 1397.50
1980 168.50 117.00 209.00 147.50 151.50 37.00 2.00 0.00 3.00 30.50 85.00 163.50 1114.50
1981 170.50 151.00 215.00 138.50 33.00 0.50 0.00 0.00 0.00 42.00 118.00 178.00 1046.50
1982 323.00 169.00 231.50 155.00 81.50 50.50 0.00 0.00 0.00 3.50 128.00 269.50 1411.50
1983 211.50 214.00 224.00 174.50 86.50 26.50 0.00 0.00 0.50 0.00 135.50 245.50 1318.50
1984 214.50 188.00 121.50 121.50 24.00 1.00 0.00 0.00 0.00 30.50 190.50 305.00 1196.50
1985 295.00 249.00 303.00 152.50 122.00 16.50 0.00 0.00 1.50 20.50 198.00 187.50 1545.50
1986 113.50 188.50 186.50 121.00 59.00 9.00 0.50 0.50 24.50 18.50 38.50 206.50 966.50
1987 314.50 196.50 196.50 89.50 48.50 25.00 2.00 1.00 0.00 7.50 116.00 345.50 1342.50
1988 265.00 143.00 132.50 125.50 78.50 65.50 0.00 0.00 6.50 19.00 148.50 271.00 1255.00
1989 302.00 296.00 196.00 86.50 81.00 28.50 0.00 2.50 3.00 18.50 48.50 156.00 1218.50
1990 246.00 281.00 232.00 80.00 87.50 7.00 0.00 0.00 0.00 1.00 67.50 267.00 1269.00
1991 243.00 149.00 311.50 135.00 153.00 45.50 0.00 0.00 2.50 32.00 84.50 197.50 1353.50
1992 209.00 135.00 181.00 28.50 0.50 5.00 0.00 0.00 0.00 2.50 70.50 285.00 917.00
1993 277.00 224.00 152.00 77.50 26.50 11.50 0.00 0.00 0.00 4.00 64.00 208.00 1044.50
1994 187.00 224.50 150.00 149.50 97.50 1.50 0.00 0.00 0.00 19.50 216.00 234.50 1280.00
1995 257.00 129.50 153.50 141.50 145.50 41.50 0.50 1.00 0.00 9.50 70.00 189.50 1139.00
1996 222.50 203.00 157.00 68.00 22.00 4.50 4.50 0.00 0.00 48.50 125.00 211.50 1066.50
1997 240.00 181.50 174.50 119.50 2.50 0.00 0.00 0.00 0.00 12.00 109.00 253.00 1092.00
1998 272.50 277.00 218.00 233.00 124.50 26.00 0.00 0.00 1.00 20.50 158.00 296.00 1626.50
1999 244.00 239.50 289.00 216.00 54.00 33.50 0.00 0.00 3.00 21.00 138.00 180.00 1418.00
2000 208.00 213.00 221.50 127.50 42.50 2.50 0.00 0.00 0.00 64.50 207.50 204.50 1291.50
2001 316.00 311.00 223.00 242.50 42.50 0.00 0.50 0.00 1.00 25.00 134.00 292.50 1588.00
2002 296.50 186.00 216.50 182.50 106.50 9.00 0.00 0.00 11.00 85.50 83.00 269.50 1446.00
2003 122.00 195.50 198.50 206.00 122.00 11.00 0.00 0.00 0.00 14.50 167.50 256.50 1293.50
2004 253.00 273.00 150.00 119.00 10.50 1.00 0.00 0.00 0.00 56.00 183.00 243.50 1289.00
2005 243.50 192.00 199.00 158.00 50.00 17.50 4.50 0.00 0.50 53.00 83.00 188.50 1189.50
2006 224.00 186.50 319.00 169.50 35.00 0.00 0.00 0.00 0.00 24.50 93.00 240.00 1291.50
2007 331.50 221.00 170.50 148.00 116.00 30.50 0.00 0.00 5.00 46.50 130.00 284.50 1483.50
2008 284.00 242.50 164.50 143.50 75.50 9.50 0.00 0.00 0.00 23.00 82.00 314.50 1339.00
2009 182.50 248.50 226.50 177.50 44.50 14.50 4.00 3.00 0.00 54.50 112.00 272.50 1340.00
2010 206.50 213.50 178.00 198.00 127.00 18.50 19.50 21.00 32.00 32.00 165.00 222.50 1433.50
2011 186.50 272.00 226.50 114.00 109.00 48.00 1.50 0.50 7.50 60.00 184.00 310.00 1519.50
2012 183.50 230.00 251.00 165.00 65.50 6.50 6.00 0.00 0.00 12.00 89.50 254.50 1263.50
2013 264.50 244.50 186.50 5.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.00 z 695.50
Period of Record Statistics
MEAN 271.13 227.98 224.84 156.29 85.68 22.06 2.33 0.91 4.06 34.86 131.62 254.09 1380.97
S.D. 76.87 66.44 63.38 51.18 46.01 21.54 5.02 2.92 7.81 28.95 53.23 63.06 287.97
SKEW 0.67 0.36 0.20 -0.21 0.15 1.05 3.23 5.29 2.57 0.98 0.27 -0.07 0.50
MAX 558.00 382.00 375.74 270.00 203.50 86.00 28.79 21.00 33.10 117.59 253.33 380.78 2116.37
MIN 113.50 117.00 61.00 20.00 0.50 0.00 0.00 0.00 0.00 0.00 38.50 124.50 698.00
NO YRS 68 69 68 66 66 67 68 69 68 68 67 69 62