EL CENTRO 2 SSW, CALIFORNIA

Monthly Total Heating Degree Days

(042713)

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
1932 0.00 z 0.00 z 54.50 15.00 0.00 0.00 0.00 0.00 0.00 14.50 42.50 409.50 536.00
1933 425.00 349.00 46.50 34.00 11.00 0.00 z 0.00 0.00 0.00 0.00 60.00 271.00 1196.50
1934 252.50 56.00 0.00 4.50 0.00 0.00 0.00 0.00 0.00 0.00 93.00 256.00 662.00
1935 342.00 171.50 138.00 13.50 0.00 0.00 0.00 0.00 0.00 15.50 190.50 298.50 1169.50
1936 334.50 177.50 45.00 16.50 0.00 0.00 0.00 0.00 0.00 0.00 101.00 296.50 971.00
1937 602.50 206.50 98.00 12.00 0.00 0.00 0.00 0.00 0.00 0.00 46.03 a 196.50 1161.53
1938 240.00 223.50 122.50 16.00 0.00 0.00 0.00 0.00 0.00 2.00 213.00 247.00 1064.00
1939 343.00 354.50 110.50 6.50 0.00 0.00 0.00 0.00 0.00 1.50 24.50 161.00 1001.50
1940 221.50 174.50 55.00 3.50 0.00 0.00 0.00 0.00 0.00 1.50 119.50 216.00 791.50
1941 260.00 102.50 29.00 26.00 0.00 0.00 0.00 0.00 0.00 8.00 104.50 244.50 774.50
1942 275.00 274.50 137.50 17.50 0.00 0.00 0.00 0.00 0.00 14.00 69.50 240.50 1028.50
1943 298.00 145.50 26.50 23.28 a 0.00 0.00 0.00 0.00 0.00 a 7.50 88.00 322.50 911.28
1944 386.50 333.00 166.00 24.50 5.00 0.00 0.00 0.00 0.00 0.00 191.50 328.50 1435.00
1945 370.45 a 235.00 206.00 76.00 0.00 0.00 0.00 0.00 0.00 0.50 150.00 372.50 1410.45
1946 354.50 293.00 107.50 20.00 0.00 11.00 0.00 a 0.00 0.00 16.00 181.00 230.50 1213.50
1947 406.50 97.50 53.50 15.50 0.00 0.00 0.00 0.00 0.00 2.50 186.50 318.00 1080.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 6.00 144.50 437.00 587.50
1949 626.50 329.00 124.00 24.00 0.00 0.00 0.00 0.00 0.00 33.00 19.00 377.00 1532.50
1950 419.00 130.50 47.00 0.00 2.50 0.00 0.00 0.00 0.00 0.00 b 73.50 180.50 853.00
1951 366.00 251.00 156.50 62.50 4.00 0.00 a 0.00 0.00 0.00 2.50 125.00 370.97 a 1338.47
1952 392.00 209.50 185.50 2.00 0.00 0.00 0.00 0.00 0.00 0.00 212.50 324.00 1325.50
1953 169.00 215.50 78.00 20.50 0.00 0.00 0.00 0.00 0.00 1.50 87.50 345.98 c 917.98
1954 190.00 k 76.00 106.00 0.00 0.00 0.00 0.00 a 0.00 0.00 9.00 22.00 321.76 b 534.76
1955 451.50 306.50 90.50 22.50 1.00 0.00 0.00 0.00 0.00 0.00 137.00 302.00 1311.00
1956 278.50 349.50 100.00 46.50 0.00 0.00 0.00 0.00 0.00 13.00 k 179.46 b 335.50 1289.46
1957 374.50 96.50 54.50 13.00 0.00 0.00 0.00 0.00 0.00 1.50 182.50 277.50 1000.00
1958 285.00 107.50 166.50 52.00 0.00 0.00 0.00 0.00 a 0.00 3.00 129.50 208.50 952.00
1959 261.50 267.00 37.50 1.00 10.50 0.00 0.00 0.00 d 0.00 18.00 117.50 389.00 1102.00
1960 507.50 299.50 55.50 15.00 0.00 0.00 0.00 0.00 0.00 5.00 183.00 439.00 1504.50
1961 282.10 a 162.00 77.50 12.50 0.00 a 0.00 a 0.00 b 0.00 0.00 41.50 247.00 445.00 1267.60
1962 343.50 206.50 230.50 3.00 21.00 0.00 0.00 0.00 0.00 0.00 69.00 261.50 1135.00
1963 422.50 56.00 142.50 78.00 0.00 0.00 0.00 0.00 0.00 0.00 102.50 366.50 1168.00
1964 456.00 307.50 186.00 53.00 16.50 0.00 0.00 0.00 0.00 0.00 207.00 304.50 1530.50
1965 306.00 227.50 159.00 84.00 4.00 0.00 0.00 0.00 0.00 0.50 77.50 347.50 1206.00
1966 425.50 299.50 87.00 6.67 c 1.00 0.00 0.00 0.00 0.00 0.00 78.00 276.00 1173.67
1967 342.00 171.00 89.50 112.00 6.50 0.00 0.00 0.00 0.00 3.00 58.50 431.00 1213.50
1968 356.50 102.50 91.00 40.00 0.00 0.00 0.00 0.00 0.00 0.00 a 76.50 458.50 1125.00
1969 225.00 263.00 167.92 a 11.50 3.50 0.00 0.00 0.00 a 0.00 4.50 91.00 274.50 1040.92
1970 342.50 163.00 119.00 74.50 0.00 0.00 0.00 0.00 0.00 17.00 82.00 334.00 1132.00
1971 334.00 194.50 125.00 48.10 a 1.00 0.00 0.00 0.00 a 0.00 74.50 144.50 420.00 1341.60
1972 409.50 147.50 21.00 17.00 0.00 0.00 0.00 0.00 0.00 9.50 172.50 383.00 1160.00
1973 424.50 198.50 202.00 40.50 0.00 0.00 0.00 0.00 0.00 0.00 123.50 276.42 a 1265.42
1974 305.00 225.22 e 82.15 a 7.50 0.50 0.00 0.00 a 0.00 0.00 0.00 z 109.00 447.00 1176.37
1975 390.00 251.00 186.50 143.00 12.00 0.00 0.00 0.00 0.00 3.00 161.50 341.00 1488.00
1976 344.50 179.00 166.00 70.50 0.00 0.00 0.00 0.00 0.00 10.50 101.50 375.00 1247.00
1977 340.48 a 136.50 219.50 24.00 8.50 0.00 0.00 0.00 0.00 0.00 59.00 251.50 1039.48
1978 287.00 180.00 56.50 25.00 0.00 0.00 0.00 0.00 0.00 0.00 167.14 b 446.73 c 1162.38
1979 411.78 a 247.85 a 126.07 a 16.07 b 0.00 a 0.00 d 0.00 f 0.00 0.00 a 7.50 158.79 a 271.25 a 1239.32
1980 222.00 127.50 121.00 42.41 a 3.00 0.00 0.00 0.00 0.00 16.00 124.62 d 187.50 844.03
1981 195.50 149.00 110.00 18.00 0.00 0.00 0.00 0.00 0.00 17.50 76.00 223.50 789.50
1982 325.50 139.50 127.50 10.00 6.00 0.00 0.00 0.00 0.00 5.00 150.00 361.50 1125.00
1983 244.50 146.00 76.50 50.00 0.50 0.00 0.00 0.00 0.00 0.00 119.50 240.50 877.50
1984 244.00 192.50 45.00 38.00 0.00 0.00 0.00 0.00 0.00 8.50 134.50 351.00 1013.50
1985 372.00 247.00 110.50 6.00 0.00 0.00 0.00 0.00 0.00 0.00 153.00 230.00 1118.50
1986 111.00 126.50 42.00 2.50 0.00 0.00 0.00 0.00 0.00 0.00 47.50 254.00 583.50
1987 309.50 158.50 82.00 4.00 0.00 0.00 0.00 0.00 0.00 0.00 87.00 368.00 1009.00
1988 293.50 106.00 63.00 13.50 5.00 0.00 0.00 0.00 0.00 0.00 101.00 294.50 876.50
1989 346.00 182.50 37.00 6.50 2.50 0.00 0.00 0.00 0.00 6.50 58.00 264.00 903.00
1990 312.50 216.00 77.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.50 390.00 1096.00
1991 283.50 38.50 148.50 10.50 1.00 0.00 0.00 0.00 0.00 31.50 114.00 296.50 924.00
1992 305.00 109.00 77.50 2.00 0.00 0.00 0.00 0.00 0.00 0.00 144.00 408.50 1046.00
1993 305.00 172.50 27.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 126.50 293.00 924.50
1994 251.00 245.26 a 40.00 22.00 0.00 0.00 0.00 0.00 0.00 1.50 230.50 332.50 1122.76
1995 276.50 43.00 56.50 28.50 9.50 0.00 0.00 0.00 0.00 0.00 8.00 198.00 620.00
1996 194.50 99.00 53.00 0.00 0.00 0.00 0.00 0.00 0.00 29.00 48.50 227.50 651.50
1997 199.50 155.00 34.00 20.00 0.00 0.00 0.00 0.00 0.00 a 0.50 49.50 333.00 791.50
1998 231.00 180.00 97.50 66.50 0.00 0.00 0.00 0.00 0.00 0.00 59.50 275.00 909.50
1999 214.00 142.00 77.00 104.00 0.50 0.00 0.00 z 0.00 0.00 0.00 43.50 255.50 836.50
2000 193.50 113.00 86.00 1.00 0.00 0.00 0.00 0.00 0.00 4.50 177.00 215.00 790.00
2001 335.50 244.50 71.50 51.50 0.00 0.00 0.00 0.00 0.00 0.00 55.34 a 343.50 1101.84
2002 297.50 157.00 111.00 1.50 0.00 0.00 0.00 0.00 0.00 0.00 27.00 255.00 849.00
2003 85.00 164.50 51.00 22.00 1.50 0.00 0.00 0.00 0.00 0.00 106.00 261.50 691.50
2004 242.50 226.00 24.00 4.00 0.00 0.00 0.00 0.00 0.00 15.00 130.50 252.00 894.00
2005 203.00 145.50 33.00 0.00 0.00 z 0.00 0.00 0.00 0.00 0.00 36.00 204.00 621.50
2006 226.50 98.50 136.50 4.00 0.00 0.00 0.00 0.00 0.00 0.00 41.00 277.50 784.00
2007 39.50 z 128.50 39.00 0.00 z 0.00 0.00 0.00 0.00 1.00 1.50 48.00 363.00 581.00
2008 322.18 c 141.50 43.00 1.50 0.00 0.00 0.00 0.00 0.00 0.00 z 0.00 z 277.50 785.68
2009 165.00 161.00 61.00 24.50 0.00 f 0.00 0.00 0.00 0.00 11.50 57.50 303.00 783.50
2010 228.00 143.00 85.00 46.50 4.50 0.00 0.00 0.00 0.00 0.00 116.50 158.00 781.50
2011 249.50 234.00 58.90 a 23.00 7.00 0.00 0.00 c 0.00 0.00 0.00 79.66 a 352.00 1004.06
2012 193.75 a 147.59 a 78.00 17.50 0.00 0.00 a 0.00 0.00 a 0.00 h 34.50 36.00 236.00 743.34
2013 336.35 a 217.50 58.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 14.50 z 612.35
Period of Record Statistics
MEAN 311.61 185.60 93.48 26.48 1.92 0.14 0.00 0.00 0.01 6.63 108.08 305.07 1048.96
S.D. 95.99 75.01 52.43 28.55 4.00 1.24 0.00 0.00 0.11 12.03 56.05 74.39 227.17
SKEW 0.58 0.37 0.66 1.76 2.69 8.72 0.00 0.00 8.78 3.13 0.37 0.21 0.16
MAX 626.50 354.50 230.50 143.00 21.00 11.00 0.00 0.00 1.00 74.50 247.00 458.50 1532.50
MIN 85.00 38.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8.00 158.00 583.50
NO YRS 78 80 81 79 78 79 79 81 80 78 80 81 68