WEST GLACIER, MONTANA

Monthly Total Growing Degree Days

(248809)

Base Temperature = 40 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
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 0.00 z 53.39 d 12.00 0.50 65.89
1950 0.00 4.50 0.00 35.50 248.00 452.00 711.50 662.00 383.28 a 138.50 15.00 0.00 a 2650.28
1951 0.00 1.50 4.13 a 71.00 295.00 378.50 725.00 623.50 273.10 a 94.60 b 0.00 1.00 2467.34
1952 0.00 0.00 7.00 166.00 353.50 492.00 661.00 679.50 468.50 187.50 7.76 a 0.00 3022.76
1953 2.50 0.00 4.50 78.00 274.00 453.00 738.50 692.50 446.50 180.50 11.00 0.00 2881.00
1954 0.00 0.00 0.00 29.00 340.50 398.50 693.00 603.00 351.50 69.50 16.50 0.00 2501.50
1955 0.00 0.00 0.00 16.00 189.00 534.00 659.50 662.00 364.50 123.50 0.00 0.00 2548.50
1956 0.00 0.00 6.00 69.00 360.50 508.00 750.50 656.00 414.00 133.00 18.00 0.00 2915.00
1957 0.00 0.00 4.50 74.00 434.50 524.00 710.50 644.00 422.00 81.50 3.50 0.00 c 2898.50
1958 0.00 d 0.00 5.50 57.50 540.50 573.50 712.50 821.50 b 397.50 133.00 4.50 4.00 3250.00
1959 0.00 0.00 1.00 80.00 201.50 507.50 705.00 579.00 313.00 75.00 8.00 0.00 2470.00
1960 0.00 0.00 16.00 64.00 248.00 503.50 809.00 554.50 386.50 117.00 2.50 0.00 2701.00
1961 0.00 0.00 5.50 45.50 316.50 676.50 770.00 817.00 232.50 109.00 0.00 0.00 2972.50
1962 0.00 2.00 0.00 127.00 289.00 512.00 660.00 638.50 366.00 123.00 13.50 0.00 2731.00
1963 0.00 4.00 21.50 118.50 301.00 517.50 675.28 a 719.00 509.48 a 208.00 4.00 0.00 3078.27
1964 0.00 0.00 a 2.00 28.50 274.50 463.85 d 704.00 515.50 265.00 92.50 5.36 b 0.00 2351.20
1965 0.00 0.00 0.00 b 79.50 246.50 453.50 672.50 675.00 150.50 197.50 16.50 0.50 2492.00
1966 0.00 a 0.00 17.00 70.00 388.50 476.50 692.50 644.50 555.00 106.50 0.00 0.00 2950.50
1967 0.00 0.00 2.00 13.50 316.50 538.50 786.50 828.50 651.50 134.00 9.50 0.00 3280.50
1968 0.00 0.00 42.50 76.00 290.00 522.00 735.50 593.00 372.00 54.50 0.00 0.00 2685.50
1969 0.00 0.00 7.00 127.50 365.50 524.50 668.00 699.50 439.00 56.50 8.50 0.00 2896.00
1970 0.00 0.00 0.00 15.00 350.50 646.00 737.50 684.00 234.00 54.50 0.00 0.00 2721.50
1971 1.00 0.00 a 0.50 69.50 377.00 439.00 668.50 825.50 280.00 134.00 0.00 0.00 2795.00
1972 0.00 1.00 16.50 39.00 314.00 560.50 625.50 756.50 304.50 82.50 0.00 0.00 2700.00
1973 0.00 0.58 d 8.50 78.50 339.50 526.00 768.00 772.00 423.50 133.50 0.00 0.00 3050.08
1974 3.50 0.00 3.50 109.00 218.00 619.00 736.00 660.50 395.69 a 149.50 1.00 0.00 2895.69
1975 0.00 a 0.00 0.00 11.00 243.00 428.00 859.00 593.50 373.00 95.00 36.50 10.00 2649.00
1976 0.00 0.00 8.00 81.00 371.00 429.50 714.00 649.50 428.00 150.00 23.50 0.00 2854.50
1977 0.00 0.50 1.50 171.00 292.50 605.50 690.00 653.50 304.66 a 80.50 2.00 0.00 2801.66
1978 0.00 0.00 43.00 97.50 238.70 a 556.50 707.50 579.50 403.00 96.00 18.00 0.00 2739.70
1979 0.00 0.00 2.50 59.00 339.93 b 554.00 765.00 775.00 472.00 173.00 0.60 e 5.00 3146.03
1980 0.00 0.00 0.00 225.00 389.16 c 464.00 649.34 c 530.00 382.24 a 166.50 36.00 1.55 a 2843.79
1981 0.00 0.00 12.00 133.00 367.00 400.50 692.50 788.00 418.00 106.00 9.00 0.00 2926.00
1982 0.00 0.00 2.50 48.00 251.00 580.50 647.00 697.50 400.00 96.00 0.00 0.00 2722.50
1983 0.00 0.00 3.00 79.50 359.50 514.00 635.50 781.50 322.00 109.00 15.00 0.00 2819.00
1984 2.50 0.00 0.50 107.50 249.50 490.50 762.00 749.50 288.00 108.00 0.00 0.00 a 2758.00
1985 0.00 0.00 0.00 125.00 404.50 529.50 901.50 623.50 255.00 64.00 9.50 0.00 2912.50
1986 0.00 0.00 39.00 115.50 408.00 707.50 605.50 807.50 308.50 119.00 1.00 0.00 3111.50
1987 0.00 0.00 8.50 215.00 458.00 611.00 709.00 588.00 456.00 110.50 41.00 0.00 3197.00
1988 0.00 0.00 13.00 203.50 367.00 654.50 711.50 734.00 423.50 219.50 19.50 0.00 3346.00
1989 3.50 0.00 0.00 110.50 304.00 582.50 811.50 668.00 373.50 110.00 24.00 0.00 2987.50
1990 0.00 1.00 6.50 144.00 258.50 506.00 772.50 737.00 527.00 66.00 22.00 0.00 3040.50
1991 0.00 0.00 1.00 67.50 304.00 461.50 750.00 793.00 420.50 149.50 0.00 0.00 2947.00
1992 0.00 0.00 20.00 186.00 431.50 671.00 641.00 683.00 309.00 194.00 2.00 0.00 3137.50
1993 0.00 0.00 11.50 100.50 497.00 492.50 510.50 604.00 342.50 138.50 3.50 0.00 2700.50
1994 0.00 0.00 8.00 143.50 411.00 521.50 809.00 795.50 479.00 123.50 0.00 0.00 3291.00
1995 0.00 10.00 1.50 56.50 354.00 499.00 718.00 576.50 421.50 69.00 2.00 0.00 2708.00
1996 0.00 0.50 4.50 79.50 206.50 555.00 780.00 666.00 329.50 124.00 0.00 0.00 2745.50
1997 0.00 0.00 0.00 25.00 351.50 530.50 715.00 728.50 448.50 99.50 8.50 0.00 2907.00
1998 0.00 0.00 4.50 133.50 477.00 491.50 880.00 759.50 580.50 96.50 3.00 0.00 3426.00
1999 0.00 0.00 27.00 111.00 292.00 454.50 643.00 801.50 356.50 106.50 52.50 0.00 2844.50
2000 0.00 0.00 6.50 135.00 321.00 509.50 729.50 706.80 a 346.00 123.50 0.00 0.00 2877.80
2001 0.00 0.00 5.50 81.00 384.00 470.50 705.50 768.50 539.00 104.50 17.50 0.00 3076.00
2002 0.00 0.00 4.00 56.00 254.50 547.50 832.50 634.00 427.00 75.00 10.50 0.00 2841.00
2003 0.00 0.00 23.50 128.00 348.00 590.00 891.00 867.50 504.00 229.50 6.50 0.00 3588.00
2004 0.00 0.00 31.50 180.00 359.00 555.00 833.00 772.00 374.50 148.00 2.50 0.50 3256.00
2005 0.00 1.50 17.50 146.50 395.00 512.00 803.00 724.00 387.00 137.50 7.00 0.00 3131.00
2006 0.00 0.00 4.50 138.50 426.00 655.00 895.50 750.00 458.00 151.00 31.50 0.00 3510.00
2007 0.00 0.00 40.00 143.00 414.50 601.00 1001.00 737.50 427.00 132.00 31.00 0.00 3527.00
2008 0.00 0.00 1.50 37.00 350.00 500.00 787.50 748.50 385.50 137.50 32.00 0.00 2979.50
2009 0.00 0.00 7.00 78.50 367.00 545.50 810.50 721.00 537.00 57.00 4.00 0.00 3127.50
2010 0.00 0.00 28.00 113.00 239.50 495.50 702.50 628.00 402.50 176.00 11.00 0.00 2796.00
2011 0.00 4.00 1.50 12.50 273.00 424.00 683.50 771.00 509.00 157.50 11.50 0.00 2847.50
2012 4.00 0.00 a 17.00 188.50 285.00 502.00 840.00 730.50 485.50 125.03 a 40.50 2.00 3220.03
2013 0.00 0.00 8.00 g 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 0.27 0.49 9.22 95.29 331.97 523.78 736.04 697.28 396.87 121.04 10.81 0.39 2924.53
S.D. 0.89 1.54 11.37 53.12 74.99 70.62 83.16 82.09 91.57 42.14 12.42 1.49 269.13
SKEW 3.25 4.48 1.62 0.45 0.34 0.46 0.53 -0.13 0.06 0.48 1.39 5.03 0.37
MAX 4.00 10.00 43.00 225.00 540.50 707.50 1001.00 867.50 651.50 229.50 52.50 10.00 3588.00
MIN 0.00 0.00 0.00 11.00 189.00 378.50 510.50 515.50 150.50 53.39 0.00 0.00 2351.20
NO YRS 64 64 63 63 63 63 63 63 63 64 64 64 63