CHICO EXPERIMENT STN, CALIFORNIA

Monthly Total Cooling Degree Days

(041715)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200602
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
1906 0.00 n 0.00 0.00 1.50 45.98 a 112.50 519.50 408.50 204.00 74.00 0.00 0.00 1365.98
1907 0.00 0.00 0.00 7.00 60.50 183.50 381.00 327.50 131.50 68.00 0.00 0.00 1159.00
1908 0.00 0.00 0.00 19.00 39.00 169.00 557.50 362.00 145.50 l 31.50 0.50 0.00 1178.50
1909 0.00 0.00 0.00 6.50 65.50 287.50 371.00 344.50 248.50 5.68 a 1.55 a 0.00 1330.74
1910 0.00 0.00 3.50 31.61 b 184.00 109.00 q 449.50 388.50 133.00 g 32.00 h 0.00 0.00 a 1057.11
1911 0.00 0.00 2.00 3.00 27.00 232.50 506.50 295.50 94.50 22.50 0.00 0.00 1183.50
1912 0.00 0.00 0.00 0.00 107.00 276.50 422.50 353.50 175.00 18.50 0.00 0.00 1353.00
1913 0.00 0.00 b 0.00 12.00 131.50 257.00 506.50 519.00 319.00 69.50 8.00 0.00 1822.50
1914 0.00 0.00 14.50 12.00 152.50 266.50 426.50 356.50 113.00 20.00 0.00 0.00 1361.50
1915 0.00 0.00 0.50 0.00 52.00 268.50 422.50 417.00 162.50 34.00 0.50 0.00 1357.50
1916 0.00 0.00 3.00 8.28 a 43.50 197.50 353.50 f 339.00 182.50 1.00 0.00 0.00 774.78
1917 0.00 0.00 0.00 2.50 18.00 274.50 528.00 438.50 234.00 140.00 0.00 0.00 1635.50
1918 0.00 0.00 0.00 7.50 35.50 427.00 358.00 354.00 155.50 47.00 0.00 0.00 1384.50
1919 0.00 0.00 0.00 3.00 145.50 223.50 440.50 362.00 195.00 8.50 0.00 0.00 1378.00
1920 0.00 0.00 0.00 3.50 90.50 232.50 329.00 406.00 172.00 10.50 0.00 0.00 d 1244.00
1921 0.00 0.00 0.00 18.50 57.50 309.00 418.50 277.00 164.00 62.50 0.00 0.00 1307.00
1922 0.00 0.00 0.00 0.00 87.00 264.50 458.00 295.50 284.50 2.50 0.00 0.00 1392.00
1923 0.00 0.00 0.00 0.00 59.00 103.00 332.50 318.50 261.00 13.50 0.00 0.00 1087.50
1924 0.00 0.00 0.00 4.00 130.00 238.00 336.00 311.50 183.00 12.00 0.00 0.00 1214.50
1925 0.00 0.00 7.00 12.93 a 117.00 341.00 463.00 327.50 80.50 0.00 0.00 0.00 1348.93
1926 0.00 0.00 13.00 73.00 148.50 399.00 462.00 326.00 89.50 22.50 0.00 0.00 1533.50
1927 0.00 0.00 0.00 33.50 95.50 272.50 401.00 301.00 146.00 50.00 0.00 0.00 1299.50
1928 0.00 0.00 0.00 11.50 203.50 307.00 482.50 411.00 242.50 59.00 0.00 0.00 1717.00
1929 0.00 0.00 0.00 3.00 79.00 232.50 393.50 402.00 209.50 83.00 3.00 0.00 1405.50
1930 0.00 0.00 10.00 15.50 48.00 288.00 418.00 354.00 144.50 44.50 0.00 0.00 1322.50
1931 0.00 0.00 0.00 39.50 232.00 249.00 588.50 460.00 160.50 17.50 1.00 0.00 1748.00
1932 0.00 0.00 0.00 1.00 113.50 271.50 408.50 391.50 351.50 57.50 0.50 0.00 1595.50
1933 0.00 0.00 0.00 21.50 67.50 244.50 534.00 446.50 123.50 104.50 0.00 0.00 a 1542.00
1934 0.00 0.00 0.00 30.50 140.50 249.50 427.00 428.50 299.00 52.50 1.00 0.00 1628.50
1935 0.00 0.00 0.00 3.00 97.50 376.50 408.00 448.50 266.00 60.00 0.00 0.00 1659.50
1936 0.00 0.00 0.00 11.00 120.50 244.50 450.00 412.50 253.00 78.00 3.00 0.00 1572.50
1937 0.00 a 0.00 0.00 0.00 129.00 248.50 473.78 a 398.00 226.50 19.50 0.00 0.00 1495.28
1938 0.00 0.00 0.00 8.50 131.00 324.00 461.00 338.50 265.50 4.00 0.00 0.00 1532.50
1939 0.00 0.00 1.00 35.00 131.50 273.50 434.50 394.00 247.50 27.00 0.00 0.00 1544.00
1940 0.00 0.00 0.00 5.50 161.50 397.00 369.50 379.00 134.00 60.00 0.00 0.00 1506.50
1941 0.00 0.00 0.00 3.50 67.50 182.00 435.00 285.00 119.00 25.00 0.00 a 0.00 1117.00
1942 0.00 d 0.00 0.00 0.00 35.00 225.50 434.00 358.00 166.50 70.00 0.00 0.00 1289.00
1943 0.00 0.00 0.00 4.00 92.50 115.00 389.50 262.00 288.00 48.00 0.00 0.00 1199.00
1944 0.00 0.00 0.00 1.00 74.00 174.00 377.00 363.50 311.00 35.00 0.00 0.00 1335.50
1945 0.00 0.00 0.00 37.00 43.50 250.50 492.00 345.50 264.00 82.00 0.00 0.00 1514.50
1946 0.00 0.00 0.00 26.00 57.50 169.00 405.50 352.00 222.00 18.00 0.00 0.00 1250.00
1947 0.00 0.00 0.00 29.50 180.00 207.00 320.50 275.50 302.00 38.50 0.00 0.00 1353.00
1948 0.00 0.00 0.00 0.00 14.00 202.00 335.50 272.50 194.00 20.00 0.00 0.00 1038.00
1949 0.00 0.00 0.00 8.40 e 71.50 281.00 346.00 248.00 223.50 47.00 0.50 0.00 1225.90
1950 0.00 0.00 0.00 26.00 140.00 208.50 436.00 384.50 193.00 41.50 3.00 0.00 1432.50
1951 0.00 0.00 0.00 21.50 129.50 264.00 350.00 327.50 268.50 18.00 0.00 0.00 1379.00
1952 0.00 0.00 0.00 1.00 119.50 106.00 484.00 361.50 308.00 97.50 0.00 0.00 1477.50
1953 0.00 0.00 0.00 9.00 9.50 122.00 432.00 257.00 280.50 38.00 0.00 0.00 1148.00
1954 0.00 0.00 0.00 36.50 91.50 186.00 411.50 214.00 119.50 13.50 0.00 0.00 1072.50
1955 0.00 0.00 0.00 0.00 104.00 200.50 322.50 371.00 200.50 36.00 2.00 0.00 1236.50
1956 0.00 0.00 0.00 11.00 77.00 250.00 411.00 299.50 192.00 44.50 0.00 0.00 1285.00
1957 0.00 0.00 0.50 9.50 60.00 344.50 405.00 263.00 211.50 0.00 0.00 0.00 1294.00
1958 0.00 0.00 0.00 2.00 131.50 226.50 436.50 523.50 297.00 103.00 0.50 0.00 1720.50
1959 0.00 0.00 0.00 12.50 61.50 348.50 499.00 361.00 186.50 87.50 0.00 0.00 1556.50
1960 0.00 0.00 0.00 8.50 73.50 399.50 500.50 372.50 253.50 29.50 0.00 0.00 1637.50
1961 0.00 0.00 0.00 9.50 22.50 370.00 447.50 426.00 171.50 84.50 0.00 0.00 1531.50
1962 0.00 0.00 0.00 25.50 47.00 267.50 415.50 344.00 223.00 33.50 0.00 0.00 1356.00
1963 0.00 0.00 0.00 0.00 91.50 235.50 331.00 353.50 279.50 59.00 0.00 0.00 1350.00
1964 0.00 0.00 0.00 17.00 76.00 215.50 408.50 387.50 159.50 108.00 0.00 0.00 1372.00
1965 0.00 0.00 0.00 27.50 96.00 173.50 381.00 371.50 106.00 62.00 0.00 0.00 1217.50
1966 0.00 0.00 2.50 26.00 130.50 299.00 315.00 435.00 259.00 68.50 1.00 0.00 1536.50
1967 0.00 0.00 0.00 0.00 145.00 241.00 484.50 534.00 330.00 28.50 4.00 0.00 1767.00
1968 0.00 0.00 1.50 15.00 88.50 334.50 419.50 286.00 261.50 13.50 0.00 0.00 1420.00
1969 0.00 0.00 0.00 5.00 173.00 218.50 445.50 413.50 272.50 15.00 0.00 0.00 1543.00
1970 0.00 0.00 0.00 0.00 159.00 297.50 446.00 351.50 196.00 39.00 0.00 0.00 1489.00
1971 0.00 0.00 0.00 0.00 48.00 223.50 485.50 438.00 234.50 88.00 0.00 0.00 1517.50
1972 0.00 0.00 4.13 a 4.50 143.00 323.00 430.50 411.50 149.50 34.00 0.00 0.00 1500.13
1973 0.00 0.00 0.00 19.00 0.00 z 352.76 a 467.67 b 333.52 b 186.00 0.00 z 0.00 z 0.00 h 1358.95
1974 0.00 k 0.00 z 0.00 l 0.50 98.50 249.50 350.50 386.50 274.44 c 57.00 0.00 b 0.00 1416.94
1975 0.00 0.00 0.00 0.00 a 91.45 a 215.50 296.00 254.00 254.50 31.50 0.00 0.00 b 1142.95
1976 0.00 0.00 0.00 0.00 d 89.00 193.50 364.00 184.93 b 174.50 45.95 c 0.54 b 0.00 1052.41
1977 0.00 0.00 a 0.00 6.00 16.50 323.00 345.50 363.50 160.00 31.00 0.00 0.00 1245.50
1978 0.00 0.00 0.53 b 0.00 b 76.47 a 185.00 381.30 a 393.24 d 96.50 f 99.50 g 0.00 b 0.00 g 1036.54
1979 0.00 d 0.00 0.00 b 0.00 f 109.61 c 0.00 z 380.02 b 285.41 b 298.97 a 80.27 c 0.00 z 0.00 i 1154.27
1980 0.00 z 0.00 a 0.00 b 7.50 g 59.13 d 0.00 z 248.00 j 0.00 z 88.00 m 76.00 i 0.00 l 0.00 z 59.13
1981 0.00 l 0.00 c 0.00 e 26.00 l 124.52 a 259.50 h 230.50 j 332.50 243.60 e 12.50 h 0.00 n 0.00 k 700.62
1982 0.00 j 0.00 0.00 1.00 128.98 c 139.50 i 216.50 j 303.80 a 214.50 12.50 0.00 0.00 660.78
1983 0.00 0.00 0.00 0.00 127.50 208.50 162.50 j 248.50 j 225.00 26.50 q 0.00 0.00 i 561.00
1984 0.00 0.00 0.00 6.00 151.90 a 255.00 463.00 369.50 289.50 20.84 b 0.00 0.00 j 1555.74
1985 0.00 b 0.00 0.00 8.28 a 54.25 a 345.50 426.50 225.00 121.00 50.50 0.00 0.00 b 1231.03
1986 0.00 0.00 3.50 16.50 114.50 243.00 347.50 384.00 128.50 33.50 0.00 0.00 1271.00
1987 0.00 0.00 0.00 47.50 193.50 299.00 257.50 348.50 201.50 105.50 0.00 0.00 1453.00
1988 0.00 0.00 0.00 22.00 64.00 259.50 507.00 348.50 252.50 17.50 z 2.50 0.00 1456.00
1989 0.00 0.00 0.00 48.50 97.00 245.00 379.00 296.00 174.00 14.00 0.00 0.00 1253.50
1990 0.00 0.00 0.00 38.00 64.50 227.50 464.00 384.00 242.50 55.50 i 0.00 0.00 k 1420.50
1991 0.00 0.00 0.00 0.00 50.00 160.50 434.00 259.00 295.50 149.00 n 3.50 0.00 1202.50
1992 0.00 0.00 0.00 27.50 241.00 258.00 318.50 413.50 247.00 74.50 0.00 0.00 1580.00
1993 0.00 0.00 0.00 z 0.00 z 67.50 191.50 392.50 328.00 225.50 46.50 j 0.00 0.00 1205.00
1994 0.00 0.00 0.00 15.00 86.00 217.00 391.50 288.00 216.50 17.00 0.00 0.00 1231.00
1995 0.00 0.00 0.00 0.00 57.50 189.00 366.50 330.50 247.50 47.50 0.00 0.00 1238.50
1996 0.00 0.00 0.00 18.00 77.00 261.00 484.50 424.00 171.50 73.00 0.00 0.00 1509.00
1997 0.00 0.00 2.00 22.50 210.00 273.00 389.00 328.50 246.50 29.50 0.00 0.00 1501.00
1998 0.00 0.00 0.00 29.00 7.00 138.50 414.00 391.00 286.50 1.50 0.00 0.00 1267.50
1999 0.00 0.00 0.00 21.00 86.50 209.00 285.50 298.63 a 255.54 b 63.50 0.00 j 0.00 1219.67
2000 0.00 0.00 b 0.00 b 22.50 b 145.00 327.86 b 258.33 d 317.48 b 199.50 44.50 j 0.00 f 0.00 g 1270.67
2001 0.00 a 0.00 b 10.16 b 23.08 d 230.78 d 231.50 f 271.00 j 250.50 k 162.50 l 80.50 l 0.00 e 0.00 o 264.01
2002 0.00 0.00 1.50 30.50 78.50 j 0.00 z 407.00 344.00 260.00 36.50 n 0.00 o 0.00 r 1043.00
2003 0.00 k 0.00 0.00 g 0.00 f 100.50 l 240.00 i 334.00 l 241.00 j 204.00 j 79.00 i 0.00 l 0.00 n 0.00
2004 0.00 k 0.00 j 14.00 j 30.50 h 59.00 l 197.50 j 205.50 n 192.50 n 170.00 i 44.00 m 0.00 k 0.00 r 0.00
2005 0.00 l 0.00 h 2.50 n 1.00 m 48.00 m 0.00 z 313.50 m 303.50 i 119.00 j 25.00 j 0.00 l 0.00 s 0.00
2006 0.00 k 0.00 j 0.00 z 13.00 j 127.50 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 0.00 0.00 0.85 13.38 98.11 250.33 414.75 353.80 215.81 44.00 0.41 0.00 1392.10
S.D. 0.00 0.00 2.60 14.04 52.00 68.59 65.25 64.72 61.61 30.28 1.17 0.00 180.84
SKEW 0.00 0.00 3.78 1.36 0.61 0.22 -0.03 0.15 -0.16 0.69 4.08 0.00 0.21
MAX 0.00 0.00 14.50 73.00 241.00 427.00 588.50 534.00 351.50 140.00 8.00 0.00 1822.50
MIN 0.00 0.00 0.00 0.00 7.00 103.00 257.50 184.93 80.50 0.00 0.00 0.00 1038.00
NO YRS 92 97 95 93 95 90 91 94 92 84 90 86 76