POLEBRIDGE, MONTANA

Monthly Total Growing Degree Days

(246615)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1933 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 364.50 n 632.50 174.00 j 45.00 n 3.50 k 3.00 i 632.50
1934 1.00 j 3.00 l 9.50 k 159.00 f 284.00 l 397.78 c 663.50 628.50 291.92 d 97.59 d 10.00 j 0.00 e 2079.29
1935 1.72 d 0.00 o 0.00 z 7.00 n 89.50 l 362.50 0.00 z 332.00 j 327.50 106.00 0.00 0.00 a 797.72
1936 0.00 h 0.00 g 11.92 e 97.50 f 425.00 546.50 782.00 653.50 306.50 135.00 0.50 h 0.00 b 2860.42
1937 0.00 b 0.00 e 0.00 r 58.50 309.50 472.50 743.48 a 591.50 423.50 146.00 2.07 a 0.00 e 2747.05
1938 0.00 0.00 d 2.77 c 36.60 e 219.07 a 495.60 e 706.00 528.50 332.50 j 0.00 z 0.00 t 0.00 j 1988.53
1939 0.00 m 0.00 k 8.00 v 16.00 y 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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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 11.00 q 0.00 a 0.00
1946 0.00 0.00 19.00 k 25.00 p 147.00 n 449.50 674.00 607.00 313.00 21.00 o 0.00 0.00 l 2043.50
1947 0.00 0.50 k 6.00 10.50 p 355.50 409.00 727.50 576.50 336.00 146.00 2.50 0.00 e 2559.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 556.28 d 575.29 e 215.00 f 77.50 0.00 0.00 1209.07
1949 0.00 0.00 1.03 a 102.00 329.38 c 401.54 d 597.30 c 602.00 332.50 37.00 8.79 a 0.00 2411.54
1950 0.00 0.00 a 0.00 28.00 191.50 393.75 b 618.00 586.00 322.00 101.00 10.34 a 0.00 2250.59
1951 0.00 4.15 a 2.00 48.50 262.00 316.03 a 633.50 527.50 253.45 a 102.50 0.00 0.00 2149.63
1952 0.00 0.00 a 1.00 123.50 269.00 421.50 597.50 573.00 407.50 116.00 5.00 0.00 2514.00
1953 1.00 0.00 1.50 57.00 223.00 382.24 a 630.50 615.00 375.00 143.00 8.04 b 0.00 2436.28
1954 1.03 a 0.00 0.00 17.50 273.00 350.50 611.50 546.00 296.38 a 51.00 25.00 0.00 2171.91
1955 0.00 0.00 1.07 b 8.50 146.00 447.50 613.36 c 555.86 b 270.56 c 146.00 0.00 0.00 2188.84
1956 0.00 0.00 6.50 51.21 a 308.50 442.00 664.84 c 590.60 b 336.21 a 82.09 d 3.50 0.52 a 2485.97
1957 0.00 1.50 3.00 45.50 355.50 476.00 606.64 b 515.50 360.00 66.50 4.66 a 0.00 a 2434.79
1958 0.00 3.00 3.00 32.50 457.77 a 518.00 650.48 a 730.00 343.45 a 114.50 4.00 1.55 a 2858.25
1959 0.00 0.00 1.55 a 48.00 147.00 470.00 633.36 b 518.45 b 330.00 a 66.65 a 6.50 0.00 b 2221.51
1960 1.50 0.00 b 21.38 b 49.00 189.50 419.46 b 756.00 550.77 a 346.50 93.50 1.50 0.00 2429.11
1961 0.50 0.00 1.00 45.50 300.70 a 582.41 a 701.12 a 752.00 207.00 93.50 0.00 0.00 2683.73
1962 0.00 c 8.00 0.00 a 94.82 b 220.50 412.50 b 592.10 a 533.00 299.48 a 108.50 7.76 a 0.00 2276.66
1963 0.00 11.76 c 12.00 88.50 242.12 b 482.59 a 582.59 b 603.97 b 461.79 b 194.27 a 4.14 a 0.00 a 2683.71
1964 0.00 a 0.00 2.07 a 27.41 a 181.00 398.04 b 648.33 b 485.15 a 226.55 a 83.91 b 8.79 a 0.00 2061.25
1965 0.00 a 0.00 0.00 b 0.00 z 204.08 a 446.00 640.84 b 639.38 c 105.54 b 138.98 a 7.76 a 3.10 a 2185.68
1966 0.00 0.00 14.50 63.00 335.32 a 369.83 a 654.74 b 544.64 b 460.86 a 94.00 0.00 c 0.00 b 2536.89
1967 0.00 a 0.00 a 1.03 a 6.43 b 232.00 433.97 a 732.00 760.00 611.50 124.00 e 0.00 z 0.00 2900.93
1968 0.00 z 0.00 z 0.00 z 0.00 z 237.50 451.50 664.00 557.50 377.50 20.50 p 0.00 0.00 2288.00
1969 0.00 0.00 11.50 50.50 m 292.20 d 484.50 582.00 629.50 427.50 21.00 i 3.00 t 0.00 d 2427.20
1970 0.00 a 0.00 0.00 j 1.50 p 85.00 u 600.00 0.00 z 662.00 220.71 b 75.50 0.00 0.00 1558.21
1971 0.00 1.50 0.00 46.50 297.50 372.50 569.37 a 720.48 b 211.67 c 75.71 e 0.00 0.00 2295.23
1972 0.00 0.00 a 22.00 28.50 228.00 478.27 d 550.25 c 706.59 b 260.89 b 53.98 b 0.00 a 0.00 2328.48
1973 0.00 c 0.50 4.50 f 52.76 a 256.50 448.39 b 666.50 b 490.50 i 301.80 e 47.00 h 0.00 0.00 e 1726.45
1974 0.00 a 0.00 3.00 81.50 165.85 a 544.20 e 0.00 z 415.50 h 214.50 h 0.00 z 0.00 c 0.00 794.55
1975 0.00 a 0.00 a 0.00 e 4.00 157.50 377.00 374.00 o 484.78 b 303.50 61.00 26.00 0.50 1414.28
1976 0.00 0.00 4.50 49.00 282.50 311.00 594.50 576.00 363.00 82.50 0.50 0.00 2263.50
1977 0.00 0.00 1.50 107.50 193.00 501.00 572.47 a 528.50 242.00 27.00 0.00 0.00 2172.97
1978 0.00 0.00 29.50 70.00 160.50 451.00 610.00 480.50 343.50 78.50 14.50 0.00 2238.00
1979 0.00 0.00 10.50 53.00 219.07 a 436.20 e 600.50 629.00 0.00 z 109.50 0.00 0.00 2057.77
1980 0.00 z 1.07 b 0.00 f 157.00 332.00 400.50 580.50 439.00 287.00 96.50 25.00 1.50 2320.07
1981 0.00 0.00 7.50 96.00 293.50 323.00 563.00 656.00 298.00 40.50 5.00 0.00 b 2282.50
1982 0.00 4.50 0.00 20.50 180.00 487.00 550.00 549.00 261.00 74.50 0.00 0.00 2126.50
1983 0.00 0.00 0.00 63.50 232.00 411.00 514.00 665.00 224.50 46.50 10.00 0.00 2166.50
1984 0.50 0.00 0.00 72.00 154.50 387.00 620.50 621.50 203.50 77.50 0.00 0.00 2137.00
1985 0.00 0.00 0.00 81.00 313.00 393.50 722.00 499.00 175.00 32.00 5.00 0.00 2220.50
1986 0.00 0.00 24.50 81.00 285.50 568.50 490.00 651.00 179.50 71.00 0.50 0.00 2351.50
1987 0.00 0.00 4.50 146.90 a 327.00 497.50 608.50 457.50 342.00 75.50 24.00 0.00 2483.40
1988 0.00 0.50 0.50 120.00 238.50 530.00 591.50 575.50 346.50 197.50 20.50 0.00 2621.00
1989 0.00 0.00 0.00 91.00 247.50 482.00 717.50 581.50 288.00 55.00 22.50 0.00 2485.00
1990 0.00 0.00 5.50 105.50 223.50 407.00 617.00 658.50 435.50 61.00 9.50 0.00 2523.00
1991 0.00 0.00 0.00 60.00 243.00 402.00 0.00 z 0.00 z 331.50 104.50 0.00 0.00 1141.00
1992 0.00 0.00 17.50 121.50 306.00 580.50 0.00 z 0.00 z 227.00 151.00 0.50 0.00 1404.00
1993 0.00 0.00 5.00 70.00 395.50 405.50 435.50 487.50 273.00 110.00 0.00 0.00 2182.00
1994 0.00 0.00 3.00 0.00 z 318.50 415.00 698.50 654.50 367.50 71.50 0.00 0.00 2528.50
1995 0.00 5.50 6.00 33.00 220.50 416.00 643.00 471.50 375.00 60.50 8.50 1.00 2240.50
1996 0.00 1.00 5.50 62.50 157.50 454.50 679.50 620.50 266.00 119.50 0.00 0.00 2366.50
1997 0.00 0.00 8.00 17.50 260.00 421.50 563.50 574.00 358.00 87.50 0.00 0.00 2290.00
1998 0.00 0.00 1.50 79.50 308.00 385.00 737.00 666.00 468.50 34.00 2.50 0.00 2682.00
1999 0.00 0.00 0.00 17.00 141.50 349.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 508.00
2000 0.00 z 0.00 z 4.00 38.00 181.00 381.00 491.50 g 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 604.00
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 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
2007 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
2008 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
2009 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
2010 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
2011 0.00 1.22 e 0.50 1.00 134.50 311.50 521.66 b 592.10 a 358.00 94.00 0.50 0.00 2014.97
2012 0.52 a 0.00 6.20 a 101.67 c 162.00 378.46 d 651.00 d 570.83 b 330.50 79.64 b 23.00 g 0.00 l 2280.81
2013 0.00 k 0.00 e 2.67 b 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 2.67
Period of Record Statistics
MEAN 0.12 0.79 5.15 61.98 251.26 435.09 628.36 589.06 317.72 92.01 5.28 0.14 2349.10
S.D. 0.36 2.14 6.89 37.00 73.99 67.60 69.95 73.70 85.64 37.74 7.58 0.51 195.22
SKEW 3.18 3.50 1.86 0.50 0.50 0.45 -0.09 0.21 0.49 0.68 1.61 4.33 0.61
MAX 1.72 11.76 29.50 157.00 457.77 600.00 782.00 760.00 611.50 197.50 26.00 3.10 2858.25
MIN 0.00 0.00 0.00 1.00 134.50 311.00 435.50 439.00 105.54 27.00 0.00 0.00 2014.97
NO YRS 56 56 54 51 57 61 54 56 56 54 54 58 38