SKWENTNA, ALASKA

Monthly Total Growing Degree Days

(508536)

Base Temperature = 40 F

File last updated on Jun 7, 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
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 263.50 0.50 0.00 0.00 264.00
1950 0.00 0.00 0.00 5.50 195.00 414.00 566.50 571.00 219.50 11.50 0.00 0.00 1983.00
1951 0.00 0.00 0.00 6.00 200.50 377.00 645.50 469.00 230.50 2.00 0.00 0.00 1930.50
1952 0.00 0.00 0.00 0.00 61.50 393.50 536.00 416.00 126.50 37.00 0.00 0.00 1570.50
1953 0.00 0.00 0.00 21.50 188.50 586.50 626.50 444.00 207.50 12.50 0.00 0.00 2087.00
1954 0.00 0.00 0.00 0.00 233.50 452.00 495.50 432.00 189.50 22.00 0.00 0.00 1824.50
1955 0.00 0.00 0.00 0.00 43.50 337.50 569.00 381.50 141.50 1.00 0.00 0.00 1474.00
1956 0.00 0.00 0.00 19.00 105.00 394.50 538.50 459.00 173.00 0.00 0.00 0.00 1689.00
1957 0.00 0.00 0.00 2.00 245.00 649.50 604.50 561.00 234.50 2.00 0.00 0.00 2298.50
1958 0.00 0.00 0.00 23.00 206.50 457.50 503.00 440.50 149.00 4.50 0.00 0.00 1784.00
1959 0.00 0.00 l 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
1960 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
1961 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
1962 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
1963 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
1964 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
1965 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
1966 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
1967 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
1968 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
1969 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
1970 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 1.00 0.00 c 1.00
1971 0.00 n 0.00 0.00 9.00 75.71 e 371.11 c 518.50 547.00 169.80 e 1.00 0.00 a 0.00 b 1692.12
1972 0.00 d 0.00 0.00 0.00 113.00 259.50 h 682.52 a 192.00 v 176.50 1.00 0.00 0.00 973.02
1973 0.00 0.00 0.00 0.50 154.00 449.00 535.50 186.50 p 0.00 z 0.00 z 0.00 z 0.00 z 1139.00
1974 0.00 z 0.00 z 0.00 z 20.56 c 235.94 d 303.50 j 556.40 b 435.50 g 0.00 z 0.00 z 0.00 c 0.00 h 812.90
1975 0.00 i 0.00 d 0.00 g 0.00 z 68.50 l 359.42 d 569.07 c 293.50 k 170.00 f 2.00 q 0.00 z 0.00 z 928.49
1976 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
1977 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
1978 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 g 0.00
1979 0.00 a 0.00 0.00 9.50 190.43 c 379.00 584.23 e 353.50 j 283.97 a 54.54 d 0.00 d 0.00 j 1501.66
1980 0.00 i 0.00 c 0.53 b 13.89 c 166.22 b 395.50 535.02 b 300.00 h 187.00 14.43 b 0.00 b 0.00 b 1312.60
1981 0.00 c 0.00 e 0.00 c 1.00 f 291.18 c 423.89 c 66.00 y 163.50 u 208.50 4.00 0.00 0.00 927.57
1982 0.00 0.00 0.00 0.50 87.00 388.50 495.50 451.50 165.50 0.00 0.00 0.00 a 1588.50
1983 0.00 0.00 a 0.00 23.50 209.50 476.00 583.50 421.37 d 161.11 c 3.00 0.00 0.00 1877.98
1984 0.00 0.00 0.00 1.50 0.00 z 393.50 g 0.00 z 0.00 z 0.00 z 0.00 z 0.00 a 0.00 b 1.50
1985 0.00 a 0.00 0.00 0.00 b 110.16 c 330.00 559.60 b 392.15 a 125.17 a 2.21 c 0.00 e 0.00 b 1519.30
1986 0.00 b 0.00 a 0.00 d 3.89 c 178.25 c 402.12 d 515.93 c 334.28 a 218.00 34.10 a 0.00 e 0.00 a 1686.57
1987 0.00 e 0.00 0.53 b 8.04 b 140.50 f 368.33 c 538.62 c 478.84 c 165.00 a 17.16 c 0.00 0.00 c 1576.53
1988 0.00 f 0.00 b 0.00 b 3.89 c 233.05 c 533.08 d 629.19 d 490.66 b 217.76 a 4.81 b 0.00 b 0.00 a 2112.43
1989 0.00 e 0.00 0.00 a 16.55 a 184.97 a 455.36 b 620.50 528.50 244.04 d 20.67 a 0.00 a 0.00 a 2070.58
1990 0.00 c 0.00 d 0.00 z 18.89 c 217.00 h 552.69 d 613.44 e 419.50 f 135.00 f 3.00 i 0.00 h 0.00 p 1185.02
1991 0.00 j 0.00 h 0.00 v 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
1992 0.00 g 0.00 j 0.00 q 0.00 y 0.00 e 237.00 n 548.46 e 445.00 71.00 0.00 z 0.00 z 0.00 z 1064.46
1993 0.00 w 0.00 z 0.00 n 4.50 m 304.00 h 524.48 a 546.50 g 429.00 f 196.67 c 39.61 d 0.00 b 0.00 f 760.76
1994 0.00 f 0.00 b 0.00 f 33.75 b 181.50 g 525.00 d 393.50 l 433.00 g 228.46 d 14.98 a 0.00 d 0.00 e 802.19
1995 0.00 e 0.00 c 0.50 15.52 a 210.50 494.00 617.00 546.12 a 292.00 f 36.96 e 0.00 e 0.00 g 1920.60
1996 0.00 b 0.00 e 0.00 e 45.54 b 284.00 514.50 597.50 471.50 156.72 a 3.10 a 0.00 a 0.00 c 2072.86
1997 0.00 g 0.00 j 0.00 a 12.22 c 246.34 c 560.50 678.50 545.00 243.00 0.00 f 0.00 0.00 c 2285.56
1998 0.00 c 0.00 a 1.60 b 9.00 131.00 440.00 529.67 b 383.88 a 170.00 7.50 0.00 a 0.00 c 1672.66
1999 0.00 b 0.00 c 0.00 b 14.50 194.04 d 527.68 b 616.38 a 491.35 a 184.82 b 6.41 b 0.00 c 0.00 c 2035.18
2000 0.00 0.00 a 0.00 d 4.29 b 133.30 a 441.21 a 507.76 b 413.00 122.59 a 0.00 0.00 0.00 c 1622.14
2001 0.00 0.00 0.00 17.00 159.13 a 593.50 569.07 c 570.50 275.50 25.32 a 0.00 0.00 b 2210.02
2002 0.00 0.00 a 0.00 c 9.50 275.79 b 458.04 b 629.00 385.50 f 238.93 b 15.00 0.00 a 0.00 b 1626.26
2003 0.00 0.00 a 0.00 42.32 b 182.50 329.00 f 611.00 467.38 e 138.10 a 51.50 0.00 0.00 a 1492.81
2004 0.00 a 0.00 0.00 13.97 a 327.50 575.00 675.50 611.50 95.50 19.50 0.00 0.00 2318.47
2005 0.00 a 0.00 a 2.00 46.50 319.00 111.00 v 423.00 j 543.00 240.50 17.50 0.00 0.00 b 1168.50
2006 0.00 a 0.00 0.00 0.00 12.00 u 314.00 k 597.02 b 422.12 a 245.17 a 38.00 0.00 0.00 b 1302.31
2007 0.00 0.00 0.00 43.33 c 246.50 502.00 557.40 e 532.88 b 238.50 5.68 a 0.00 a 0.00 a 2126.30
2008 0.00 0.00 b 0.00 3.00 151.90 a 376.55 a 503.75 a 309.00 j 215.50 0.00 0.00 0.00 a 1250.70
2009 0.00 a 0.00 0.00 a 15.00 a 296.05 a 456.50 646.87 a 433.50 229.66 a 49.50 0.00 a 0.00 2127.07
2010 0.00 0.00 c 0.00 0.00 z 278.50 420.00 d 490.50 411.50 f 258.50 16.53 a 0.00 a 0.00 1464.03
2011 0.00 a 0.00 0.00 b 1.00 h 226.50 426.92 d 523.38 a 431.79 c 195.54 b 4.00 0.00 0.00 e 1808.13
2012 0.00 a 0.00 h 0.00 b 20.89 b 186.53 b 462.22 c 451.71 c 411.78 a 154.50 21.18 a 0.00 0.00 1708.83
2013 0.00 a 0.00 f 0.00 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
Period of Record Statistics
MEAN 0.00 0.00 0.12 13.50 188.94 456.10 570.79 470.87 194.20 14.81 0.02 0.00 1889.48
S.D. 0.00 0.00 0.41 13.23 76.34 77.24 56.50 66.24 49.48 15.78 0.15 0.00 260.13
SKEW 0.00 0.00 3.68 1.13 -0.36 0.50 0.16 0.23 -0.35 1.07 6.48 0.00 0.00
MAX 0.00 0.00 2.00 46.50 327.50 649.50 682.52 611.50 283.97 54.54 1.00 0.00 2318.47
MIN 0.00 0.00 0.00 0.00 0.00 330.00 451.71 334.28 71.00 0.00 0.00 0.00 1474.00
NO YRS 40 42 42 41 40 40 42 33 42 42 45 41 22