ADAK, ALASKA

Monthly Total Growing Degree Days

(500026)

Base Temperature = 40 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 199603
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
1949 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 197.00 60.50 16.00 9.50 283.00
1950 10.00 0.00 0.00 1.00 16.50 130.86 a 318.50 388.50 199.00 68.00 15.00 a 17.50 1164.86
1951 1.00 1.00 1.00 9.83 a 30.50 153.50 294.50 361.50 242.00 118.00 14.00 9.50 1236.33
1952 5.50 0.50 1.50 2.50 80.00 132.41 a 220.00 347.00 217.50 92.50 3.21 b 0.50 1103.13
1953 0.00 0.00 0.00 3.50 16.50 188.00 309.00 421.00 265.86 a 67.00 10.50 0.00 1281.36
1954 0.00 0.00 1.50 2.00 21.00 93.50 244.00 308.50 282.00 48.50 9.00 7.00 1017.00
1955 0.00 3.00 0.00 3.50 8.00 104.00 248.50 370.50 223.00 42.50 14.00 10.00 1027.00
1956 8.00 18.00 0.00 5.50 25.50 125.00 332.50 431.50 286.00 152.50 5.00 1.00 1390.50
1957 18.50 10.00 3.00 10.00 63.00 148.00 255.50 352.00 219.50 105.50 3.00 4.50 1192.50
1958 0.00 0.00 0.00 17.00 35.00 123.00 233.50 317.50 249.00 116.00 0.50 0.50 1092.00
1959 3.00 0.00 0.00 10.50 46.50 99.50 238.00 375.00 297.50 136.00 1.00 1.50 1208.50
1960 1.00 0.00 0.00 0.00 15.50 109.50 293.50 333.00 252.50 95.50 13.00 0.00 1113.50
1961 0.00 0.00 0.00 16.50 72.50 195.00 289.00 309.00 266.00 97.00 30.50 1.50 1277.00
1962 9.50 8.00 6.00 26.00 108.00 230.00 398.50 448.50 218.50 90.00 2.00 0.00 1545.00
1963 4.00 0.00 5.00 9.50 73.00 118.50 331.00 0.00 z 259.00 80.50 33.00 0.00 913.50
1964 0.50 0.00 2.00 0.00 67.00 143.50 236.50 283.50 231.00 83.00 15.00 13.00 1075.00
1965 5.50 3.00 12.00 29.50 62.50 168.00 313.00 397.00 237.50 93.50 42.00 4.50 1368.00
1966 0.00 0.00 0.00 26.50 60.00 134.00 240.00 284.50 277.50 83.00 45.00 2.00 1152.50
1967 0.00 0.00 12.00 32.00 125.50 186.50 435.50 373.50 206.50 90.50 19.00 3.00 1484.00
1968 21.50 0.00 0.00 0.50 63.50 171.50 319.00 296.50 221.50 113.50 7.00 4.00 1218.50
1969 15.50 1.00 2.50 0.50 27.00 118.50 303.50 477.00 230.00 76.50 13.50 0.00 1265.50
1970 0.00 0.00 0.50 3.50 67.50 152.50 259.50 357.00 0.00 z 141.50 87.50 0.00 z 1069.50
1971 10.00 2.50 1.00 3.00 42.00 0.00 z 143.00 279.50 228.00 0.00 z 4.50 n 0.00 z 709.00
1972 0.00 0.00 1.00 17.00 31.00 147.00 285.50 322.00 0.00 z 48.00 4.00 0.00 z 855.50
1973 4.00 0.00 z 1.50 0.00 z 7.00 116.50 248.50 306.50 205.00 109.00 29.00 0.00 1027.00
1974 0.00 0.50 2.50 2.50 22.00 125.50 311.50 320.50 235.00 67.50 7.00 2.00 1096.50
1975 0.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3.00 1.00 4.00
1976 0.00 o 0.00 q 0.00 1.00 21.00 90.50 231.00 261.00 159.50 60.00 0.00 o 0.00 z 824.00
1977 0.00 0.00 0.00 0.00 28.50 196.50 320.50 368.00 0.00 z 100.50 5.50 0.00 1019.50
1978 0.00 z 0.00 0.00 7.00 58.00 128.50 252.50 325.50 0.00 z 107.50 0.00 z 0.00 879.00
1979 0.00 0.00 0.00 10.50 0.00 z 262.00 308.50 0.00 z 284.00 89.50 20.50 19.00 994.00
1980 0.00 z 0.00 z 0.50 0.00 27.50 184.50 329.00 313.50 238.00 60.00 11.00 1.50 1165.50
1981 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
1982 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 154.50 236.00 334.00 204.31 a 120.50 12.00 0.00 1061.31
1983 0.00 0.00 0.00 13.00 47.50 159.83 a 286.00 431.00 253.45 a 132.00 4.00 4.50 1331.28
1984 0.00 0.00 0.00 z 2.50 82.50 225.50 366.50 0.00 z 353.50 161.00 0.00 z 26.00 1217.50
1985 1.50 3.00 0.50 9.00 65.00 161.00 311.50 0.00 z 263.00 0.00 z 0.00 z 0.00 z 814.50
1986 0.00 1.00 5.50 18.00 62.50 142.00 354.00 0.00 z 292.00 0.00 z 31.00 0.00 z 906.00
1987 0.00 z 0.00 0.00 z 0.00 z 42.50 161.50 0.00 z 327.50 0.00 z 81.00 0.00 z 0.00 z 612.50
1988 0.00 z 0.00 0.00 0.00 30.00 0.00 z 305.50 0.00 z 0.00 z 120.00 21.00 0.00 z 476.50
1989 0.00 0.00 1.50 0.00 z 72.00 0.00 z 313.00 0.00 z 251.50 166.00 0.00 z 3.50 807.50
1990 0.00 0.00 a 0.00 2.00 47.50 164.00 340.00 366.50 159.00 87.50 30.50 0.00 z 1197.00
1991 4.00 0.00 5.50 1.50 40.00 130.00 286.50 357.50 207.00 93.00 0.00 z 0.00 1125.00
1992 0.00 z 0.50 0.00 8.00 56.50 131.00 0.00 z 272.00 216.50 64.50 6.00 7.00 762.00
1993 0.00 0.00 1.00 0.00 27.00 141.00 254.50 318.00 203.50 69.00 3.00 0.00 1017.00
1994 0.00 2.50 0.00 0.50 24.00 91.50 f 194.00 k 258.00 h 188.50 h 48.50 k 23.00 g 4.50 k 27.00
1995 0.00 m 0.00 i 1.00 i 3.62 a 21.50 i 80.00 g 189.00 h 385.84 c 203.00 h 67.96 e 9.00 f 10.00 i 457.42
1996 3.50 m 7.00 g 4.50 i 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
1997 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
1998 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
1999 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
2000 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
2001 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
2002 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
2003 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
2004 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
2005 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
2006 0.00 z 0.00 z 0.00 z 6.00 54.50 200.17 a 196.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 260.67
Period of Record Statistics
MEAN 3.32 1.36 1.65 7.68 46.98 151.17 289.91 347.81 238.69 94.05 16.28 4.40 1211.68
S.D. 5.56 3.42 2.91 8.74 26.27 38.26 53.27 51.79 38.87 30.63 16.94 6.25 146.76
SKEW 1.88 3.55 2.44 1.34 0.76 0.81 0.12 0.55 0.43 0.54 2.31 1.87 0.61
MAX 21.50 18.00 12.00 32.00 125.50 262.00 435.50 477.00 353.50 166.00 87.50 26.00 1545.00
MIN 0.00 0.00 0.00 0.00 7.00 90.50 143.00 261.00 159.00 42.50 0.50 0.00 1017.00
NO YRS 37 40 41 41 42 40 40 36 37 41 36 35 22