CHULA VISTA, CALIFORNIA

Monthly Total Heating Degree Days

(041758)

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
1918 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 8.08 d 44.00 236.50 390.00 678.58
1919 365.50 356.00 382.00 235.50 147.00 44.00 4.00 1.50 27.00 188.50 284.50 360.50 2396.00
1920 400.00 296.00 352.00 287.00 175.00 80.00 31.50 5.50 42.00 200.50 271.50 401.00 2542.00
1921 420.50 338.00 277.00 305.50 239.00 84.00 1.00 0.00 31.50 74.50 222.50 230.50 2224.00
1922 444.00 348.00 371.00 315.00 183.50 85.00 2.50 1.00 6.50 117.50 326.50 293.50 2494.00
1923 377.00 360.50 324.50 236.00 118.50 112.50 18.00 1.00 32.50 124.50 141.50 311.50 2158.00
1924 423.50 276.00 319.50 237.50 119.50 51.50 9.50 6.50 49.50 228.50 248.50 414.00 2384.00
1925 443.50 328.00 318.50 245.50 134.00 71.50 0.00 0.00 56.50 100.00 206.50 249.50 2153.50
1926 357.50 225.50 152.00 70.00 69.00 5.50 2.00 0.50 51.00 125.50 126.00 377.00 1561.50
1927 397.50 284.00 318.50 253.50 169.50 97.00 10.00 1.50 33.50 135.33 e 168.00 359.00 2227.33
1928 352.50 325.21 a 266.00 274.50 96.00 57.93 a 25.50 10.50 47.50 144.00 247.50 368.00 2215.15
1929 436.00 410.00 369.50 285.00 148.50 67.50 3.00 1.00 17.50 65.50 238.00 272.50 2314.00
1930 356.00 283.00 239.50 152.00 184.50 48.62 a 3.50 0.00 24.50 104.50 171.00 369.00 1936.12
1931 341.50 229.50 223.50 107.00 14.50 16.50 0.00 0.00 9.50 78.50 293.50 434.50 1748.50
1932 465.00 336.50 297.00 221.50 147.00 77.00 21.50 19.00 26.00 127.00 151.50 428.50 2317.50
1933 468.00 432.00 341.50 271.00 273.50 123.00 29.50 12.50 99.00 135.00 224.50 414.00 2823.50
1934 400.50 252.00 180.32 a 140.00 73.00 54.00 1.00 0.00 23.50 81.00 191.50 255.50 1652.32
1935 346.00 285.50 390.50 216.00 149.00 80.50 17.50 2.00 10.00 130.50 336.50 349.50 2313.50
1936 375.50 308.50 306.00 256.00 111.00 49.50 1.50 1.00 15.50 82.50 188.50 317.00 2012.50
1937 561.00 385.00 321.00 242.50 121.50 62.00 0.50 0.50 6.00 103.50 243.00 262.00 2308.50
1938 317.50 285.00 302.00 213.00 147.00 78.00 19.00 0.00 2.50 155.50 310.50 272.50 2102.50
1939 402.00 463.00 379.00 179.50 142.50 64.00 7.00 1.00 8.50 60.00 151.00 249.00 2106.50
1940 282.50 272.00 237.50 163.50 71.00 42.00 17.00 4.50 18.00 57.50 217.00 199.00 1581.50
1941 330.00 221.50 193.00 195.50 46.50 59.00 11.00 3.50 47.00 81.00 186.50 333.00 1707.50
1942 341.50 382.00 346.00 222.50 161.50 79.50 1.50 2.50 26.50 86.50 260.17 a 370.00 2280.17
1943 374.00 268.00 249.50 210.00 105.50 88.50 13.00 0.00 12.00 76.50 224.00 284.00 1905.00
1944 386.50 378.00 325.50 258.00 138.50 85.00 24.50 9.50 32.50 95.50 222.50 307.00 2263.00
1945 412.50 313.50 366.50 284.00 160.50 53.00 3.50 0.00 12.50 46.00 254.00 325.50 2231.50
1946 395.00 413.00 335.50 172.00 111.50 105.50 2.00 0.00 2.50 136.00 284.00 344.50 2301.50
1947 468.00 289.00 241.00 163.00 105.00 20.50 7.00 8.00 1.50 73.50 281.00 351.50 2009.00
1948 411.50 413.50 379.50 226.00 182.00 82.00 50.00 15.50 33.50 109.50 285.50 455.00 2643.50
1949 586.00 425.50 372.00 198.00 146.00 39.50 6.50 11.00 21.00 130.00 151.00 417.50 2504.00
1950 516.00 363.00 297.50 213.50 213.00 102.00 3.00 18.00 15.00 l 84.50 213.50 307.50 2331.50
1951 414.50 360.50 218.50 j 210.50 175.50 60.00 6.50 10.50 12.41 a 70.50 193.50 391.50 1905.91
1952 439.00 308.50 345.50 241.50 126.00 118.00 43.50 0.00 17.50 97.50 283.00 381.00 2401.00
1953 311.00 371.00 362.00 273.50 209.00 120.50 5.00 3.50 43.00 77.50 178.50 379.00 2333.50
1954 437.50 220.50 343.50 200.50 130.00 68.50 2.50 1.50 23.50 147.00 172.00 340.00 2087.00
1955 464.50 347.50 298.00 281.50 175.00 78.50 f 12.50 i 0.00 h 15.50 f 105.00 i 195.00 h 259.00 g 1566.50
1956 323.50 f 317.00 h 259.00 j 207.50 g 84.00 i 44.50 h 3.00 i 0.50 i 3.00 i 74.00 h 131.50 k 168.00 m 0.00
1957 366.63 e 175.50 g 272.44 e 169.50 g 116.50 f 20.50 h 0.50 i 2.00 h 2.50 j 56.50 h 162.50 j 172.00 h 639.08
1958 234.00 g 161.50 h 243.50 g 123.50 g 60.00 h 16.50 i 1.50 h 0.00 j 0.50 h 15.50 h 148.00 j 193.50 h 0.00
1959 215.50 h 313.60 c 136.50 h 67.00 h 76.50 i 17.50 h 0.00 i 0.50 i 0.00 j 33.00 h 86.50 k 204.50 g 313.60
1960 294.50 i 260.00 h 217.50 h 163.00 g 88.50 i 21.50 h 9.00 l 0.00 h 5.50 i 72.50 i 188.50 g 292.00 h 0.00
1961 198.50 h 176.00 i 206.00 g 149.00 i 111.00 j 62.50 h 1.00 j 0.00 i 11.50 l 88.00 i 143.00 j 287.00 f 0.00
1962 293.00 f 295.83 e 302.50 g 154.00 i 147.00 g 63.50 j 11.00 i 1.50 h 10.50 k 88.00 h 136.50 l 245.50 i 295.83
1963 287.50 h 139.50 f 251.50 f 278.65 d 83.50 g 61.50 f 14.00 h 0.00 j 0.00 g 27.50 i 146.50 f 209.00 i 278.65
1964 315.50 f 338.14 d 270.50 f 231.00 e 176.00 g 114.60 e 22.00 f 0.50 j 15.50 f 24.50 g 256.80 e 343.00 1283.54
1965 288.00 f 347.67 d 302.85 e 219.44 c 114.00 i 94.00 h 26.00 i 0.00 h 28.20 e 33.00 g 102.50 g 240.50 g 898.16
1966 292.00 i 261.50 g 242.50 g 126.00 h 68.50 i 29.00 g 0.50 i 0.00 b 13.50 46.00 185.00 310.53 b 555.03
1967 378.00 286.00 239.50 334.50 158.10 a 124.50 4.81 b 0.00 0.00 39.00 89.50 375.00 2028.91
1968 344.00 228.50 258.85 a 204.50 156.55 a 82.50 d 15.50 a 4.00 5.50 87.50 197.00 430.38 a 2014.78
1969 276.42 a 338.00 351.50 194.50 139.50 56.38 a 5.00 0.00 3.00 127.50 150.52 a 329.50 1971.81
1970 359.50 236.50 248.50 237.00 136.00 58.50 6.50 0.00 b 31.50 91.50 202.76 a 365.00 1973.26
1971 386.50 320.96 a 343.50 251.00 210.00 122.50 8.50 0.00 11.50 153.00 285.50 437.00 2529.96
1972 470.50 323.00 249.00 208.50 112.50 21.00 2.58 a 0.50 7.00 64.50 235.50 328.50 2023.08
1973 406.50 255.00 332.50 0.00 z 160.00 45.50 7.50 0.50 22.00 109.50 248.00 329.00 1916.00
1974 367.00 337.00 307.50 233.00 153.50 56.00 14.00 1.50 8.00 58.50 202.00 382.50 2120.50
1975 391.50 361.00 359.50 308.50 205.50 112.50 17.00 13.50 1.50 104.50 248.50 381.50 2505.00
1976 324.50 260.00 286.50 246.50 117.50 44.00 1.00 2.50 0.00 25.50 125.00 268.50 1701.50
1977 280.00 214.50 337.50 197.59 a 173.50 47.00 10.00 0.00 8.50 31.50 146.50 171.50 1618.09
1978 239.00 232.50 157.00 174.00 90.00 17.00 8.00 6.00 7.50 17.00 224.00 421.00 1593.00
1979 356.50 341.50 267.50 193.50 96.50 35.50 10.50 0.00 0.00 51.00 209.50 249.50 1811.50
1980 220.50 174.52 a 249.00 161.00 153.45 a 84.00 3.00 0.00 4.50 51.50 189.00 273.83 a 1564.30
1981 256.00 187.00 250.50 140.50 65.50 1.50 0.00 0.00 0.00 86.50 167.00 274.50 1429.00
1982 328.00 183.00 210.50 149.00 61.48 a 37.50 3.00 0.00 4.50 22.00 161.50 317.50 1477.98
1983 212.50 198.00 166.00 168.50 73.00 18.50 0.00 0.00 0.00 4.00 124.50 214.50 1179.50
1984 202.50 236.00 163.50 133.00 45.00 16.00 0.00 0.00 0.00 36.00 195.00 323.00 1350.00
1985 321.00 287.00 304.50 124.50 53.00 11.38 a 0.00 0.00 0.00 16.50 193.00 236.00 1546.88
1986 132.00 182.50 131.50 114.00 48.10 b 1.00 0.00 d 0.00 15.50 13.20 d 84.00 233.50 955.31
1987 311.50 214.00 209.50 88.00 31.00 6.00 1.50 0.00 0.00 1.00 109.00 368.00 1339.50
1988 269.50 156.00 146.50 104.50 58.50 34.00 0.00 0.00 3.50 7.00 153.50 266.00 1199.00
1989 312.50 247.50 182.00 55.50 55.00 22.00 0.00 0.00 0.00 18.50 0.00 z 182.50 1075.50
1990 262.50 276.50 123.50 k 65.50 50.50 4.50 0.00 0.00 0.00 5.50 106.00 279.50 1050.50
1991 252.50 163.50 258.50 123.00 119.00 34.00 0.50 0.00 1.00 30.00 0.00 z 244.00 1226.00
1992 211.00 132.50 162.50 20.00 0.00 2.00 1.00 0.00 0.00 3.00 104.50 0.00 z 636.50
1993 239.00 189.00 103.00 57.50 11.50 8.50 0.00 0.00 0.50 7.50 98.00 240.00 954.50
1994 203.50 257.00 137.00 126.00 101.50 5.50 0.00 0.00 0.50 23.50 244.50 300.50 1399.50
1995 244.50 98.50 119.00 110.00 102.00 20.50 0.00 0.00 0.00 12.00 79.50 235.50 1021.50
1996 214.00 152.00 164.00 67.00 10.50 0.00 0.00 0.00 0.00 d 51.50 118.50 216.50 994.00
1997 214.00 197.50 96.50 85.50 0.00 1.00 0.00 0.00 0.00 7.50 76.50 235.50 914.00
1998 0.00 z 217.50 173.00 184.00 0.00 z 0.00 z 0.00 0.00 0.00 31.00 a 154.00 303.50 1063.00
1999 270.00 257.00 302.00 216.67 c 125.50 58.89 c 1.00 0.52 a 61.50 t 2.50 j 95.00 h 204.00 f 1231.57
2000 229.73 c 120.00 i 218.79 e 88.97 a 27.68 c 5.00 c 0.00 c 0.00 b 0.00 a 36.54 c 165.00 h 235.37 d 842.07
2001 340.00 272.46 b 189.50 190.18 b 51.84 b 6.00 0.00 a 0.00 b 0.00 b 7.48 b 162.78 c 306.42 e 1526.67
2002 315.17 d 142.00 n 137.00 p 208.00 164.00 26.00 2.50 0.00 0.50 j 41.00 84.50 279.50 1120.67
2003 116.00 208.00 254.56 e 147.50 i 73.50 j 8.00 o 0.00 q 0.00 t 0.00 z 5.00 f 155.40 e 0.00 z 733.96
2004 203.50 j 190.00 i 83.50 p 3.50 y 17.88 e 4.00 f 0.00 k 0.00 m 0.00 o 25.50 m 215.50 129.50 p 233.38
2005 171.00 i 178.50 107.50 k 98.00 j 32.50 i 5.00 g 0.00 g 0.00 j 0.00 m 0.00 z 52.00 m 103.50 q 178.50
2006 180.00 m 211.22 e 0.00 z 100.50 i 26.50 n 0.50 n 0.00 k 0.00 o 0.00 q 17.50 k 50.50 k 145.50 n 211.22
2007 232.00 i 184.00 g 118.00 j 139.00 f 40.50 l 10.00 l 0.00 k 0.00 m 2.00 q 10.00 p 38.50 p 135.50 p 0.00
2008 216.00 j 171.50 h 107.50 l 88.50 i 65.00 k 7.50 m 0.00 z 0.00 z 0.00 m 5.00 l 26.00 m 138.50 n 0.00
2009 130.50 f 215.00 206.00 108.00 g 34.50 1.00 0.50 0.00 0.00 49.00 148.50 300.00 954.50
2010 248.00 214.50 181.00 183.00 126.00 53.00 16.00 5.50 14.50 44.00 193.00 238.50 1517.00
2011 214.00 272.00 226.00 109.50 85.77 a 44.50 0.00 0.50 1.00 39.50 180.54 b 349.50 1522.80
2012 253.00 229.50 212.00 127.00 27.00 19.00 0.00 0.00 0.00 12.50 116.50 250.50 1247.00
2013 298.50 283.50 190.00 2.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.50 z 772.00
Period of Record Statistics
MEAN 341.77 280.42 264.67 191.92 114.65 52.52 7.16 2.44 14.80 73.24 194.88 316.77 1894.83
S.D. 93.22 76.36 77.98 70.50 60.41 36.45 10.09 4.49 18.08 51.19 62.88 68.02 478.37
SKEW 0.01 0.09 -0.28 -0.32 0.00 0.29 2.13 2.14 1.87 0.64 0.06 0.02 -0.35
MAX 586.00 463.00 390.50 334.50 273.50 124.50 50.00 19.00 99.00 228.50 336.50 455.00 2823.50
MIN 116.00 98.50 96.50 20.00 0.00 0.00 0.00 0.00 0.00 1.00 76.50 171.50 914.00
NO YRS 78 83 78 78 77 76 76 77 76 77 77 77 64