HUNTLEY EXP STN, MONTANA

Monthly Total Growing Degree Days

(244345)

Base Temperature = 50 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
1911 0.00 0.00 4.00 30.50 187.00 500.00 546.50 459.00 241.50 50.00 0.00 0.00 2018.50
1912 0.00 0.00 0.00 39.00 176.50 468.00 538.50 511.00 136.00 42.00 0.00 0.00 1911.00
1913 0.00 a 0.00 0.00 71.00 172.00 476.50 563.00 580.00 281.38 a 41.00 0.00 0.00 2184.88
1914 0.00 0.00 0.00 31.00 212.00 401.00 729.00 542.00 287.00 55.50 9.00 0.00 2266.50
1915 0.00 0.00 0.00 167.00 172.57 a 244.00 418.50 591.50 179.00 53.50 0.00 0.00 1826.07
1916 0.00 0.00 19.50 41.00 115.00 355.00 723.50 556.00 225.00 16.50 0.00 0.00 2051.50
1917 0.00 0.00 0.00 8.50 114.00 312.50 768.50 559.50 291.00 75.50 16.50 0.00 2146.00
1918 0.50 0.00 16.50 24.00 155.50 576.00 598.00 536.50 192.50 103.50 0.00 0.00 2203.00
1919 0.00 0.00 a 0.00 46.50 293.00 602.00 718.50 643.50 308.00 17.50 0.00 1.00 2630.00
1920 0.00 0.00 0.00 4.00 138.00 373.50 700.50 624.50 294.00 89.50 0.00 0.00 2224.00
1921 0.00 1.50 5.50 40.00 145.00 508.50 650.50 635.50 208.50 96.50 15.00 0.00 2306.50
1922 0.00 0.00 0.00 26.50 161.50 463.00 597.00 729.50 336.00 82.00 0.50 0.00 2396.00
1923 0.00 0.00 1.00 40.50 184.00 372.50 747.50 539.50 290.50 26.50 0.00 0.00 2202.00
1924 0.00 1.00 0.00 21.00 131.50 323.50 590.50 503.00 262.00 40.50 1.00 0.00 1874.00
1925 0.00 0.00 9.00 73.00 223.50 393.00 637.05 a 555.50 294.00 11.00 0.00 0.00 2196.05
1926 0.00 0.00 a 6.00 149.00 260.00 447.50 714.50 555.00 119.00 110.00 2.00 0.00 2363.00
1927 0.00 0.00 1.50 73.50 82.00 349.00 564.50 486.50 211.00 86.50 2.00 0.00 1856.50
1928 0.00 0.00 21.50 38.50 350.50 305.50 618.00 489.50 231.50 53.00 0.00 0.00 2108.00
1929 0.00 0.00 3.50 26.50 157.00 371.00 691.50 705.00 169.00 91.00 0.00 0.00 2214.50
1930 0.00 3.50 0.00 122.00 194.50 412.50 730.50 684.50 288.50 18.50 0.00 0.00 2454.50
1931 0.50 0.00 5.50 72.00 246.50 581.00 704.00 646.00 314.00 56.00 21.00 0.00 2646.50
1932 0.00 16.00 5.50 60.00 241.50 424.50 657.50 628.00 229.50 45.50 0.00 0.00 2308.00
1933 0.00 0.00 4.00 27.00 158.50 600.50 735.50 553.00 249.00 84.00 2.00 0.00 2413.50
1934 0.00 0.50 5.50 93.00 415.50 442.50 702.00 562.00 219.50 109.50 9.50 0.00 2559.50
1935 0.00 0.00 0.00 30.50 110.00 354.00 695.00 507.37 a 302.00 71.50 0.00 0.00 2070.37
1936 0.00 0.00 0.00 73.97 a 379.50 574.00 899.50 660.00 310.50 113.00 0.50 0.00 3010.97
1937 0.00 0.00 0.00 38.00 286.50 394.50 729.00 631.00 347.50 85.00 0.00 0.00 2511.50
1938 0.00 0.00 2.00 76.00 142.50 458.50 605.50 510.50 388.50 92.50 0.00 0.00 2276.00
1939 0.00 0.00 20.00 99.00 271.00 296.00 691.50 541.00 274.50 69.00 2.00 7.00 2271.00
1940 0.00 0.00 6.00 21.50 284.00 480.52 a 729.00 647.50 448.50 111.00 0.00 0.00 2728.02
1941 0.00 1.00 9.50 41.00 241.00 418.50 670.00 609.00 154.00 27.00 0.50 0.00 2171.50
1942 0.00 0.00 0.00 69.50 139.50 308.28 a 653.00 540.50 297.00 105.00 2.50 0.00 2115.28
1943 0.00 0.00 12.00 91.00 157.50 362.00 657.50 604.50 241.50 121.50 0.00 0.00 2247.50
1944 0.00 0.00 0.00 a 37.76 a 303.00 293.00 551.50 494.97 a 243.00 67.00 0.00 0.00 1990.23
1945 0.00 0.00 1.50 27.50 119.00 246.50 652.00 580.50 213.00 116.50 9.00 0.00 1965.50
1946 0.00 0.00 11.00 117.93 a 133.50 388.00 701.00 541.00 252.50 19.00 0.00 0.00 a 2163.93
1947 0.00 0.00 1.00 56.00 180.50 275.00 716.00 619.00 255.50 109.50 0.00 0.00 a 2212.50
1948 0.00 0.00 a 0.00 78.50 263.00 414.00 614.50 653.00 373.00 80.50 0.00 0.00 2476.50
1949 5.00 0.00 0.00 108.50 302.00 398.50 590.50 614.50 251.50 10.85 a 9.00 0.00 2290.35
1950 0.00 0.00 a 0.00 43.50 126.00 328.45 a 496.50 503.00 242.00 90.50 5.00 0.00 1834.95
1951 0.00 0.00 0.00 35.00 210.00 241.50 645.50 524.00 173.00 53.50 0.00 0.00 1882.50
1952 0.00 z 0.00 0.00 130.50 215.50 445.50 539.00 587.50 350.00 69.00 0.00 0.00 2337.00
1953 0.00 0.00 10.00 40.34 a 124.50 372.50 641.00 579.50 326.50 143.50 10.18 b 0.00 a 2248.02
1954 0.00 1.50 0.00 34.00 186.50 302.00 710.00 522.50 283.00 55.50 5.00 0.00 2100.00
1955 0.00 0.00 0.00 17.00 169.00 348.00 611.00 649.50 279.50 102.50 0.00 0.00 2176.50
1956 0.00 0.00 7.00 9.50 242.50 547.24 a 622.00 534.23 a 294.00 94.50 4.00 0.00 2354.97
1957 0.00 0.00 0.00 a 18.50 235.50 354.00 698.00 590.03 a 267.00 70.78 a 0.00 0.50 2234.32
1958 0.00 0.00 0.00 29.50 372.55 c 279.50 469.00 676.00 300.00 93.50 0.00 0.50 2220.55
1959 0.00 0.00 5.00 30.50 96.50 474.00 607.50 594.00 256.50 43.50 1.00 0.00 2108.50
1960 0.00 0.00 19.50 36.00 190.50 411.50 735.00 543.00 289.50 89.50 0.00 0.00 2314.50
1961 0.00 7.50 1.50 30.00 242.00 572.00 695.50 728.00 144.50 76.00 0.00 0.00 2497.00
1962 0.00 3.50 0.00 110.50 168.50 424.50 553.00 551.50 266.00 110.50 1.00 0.00 2189.00
1963 0.00 0.00 17.00 47.50 210.50 424.00 682.00 663.00 482.00 211.50 2.00 0.00 2739.50
1964 0.00 0.00 5.50 39.00 239.00 366.00 738.00 533.50 199.00 93.00 0.00 0.00 2213.00
1965 0.00 0.00 0.00 39.50 168.50 362.50 637.00 559.00 80.00 106.00 1.03 a 0.00 1953.53
1966 0.00 0.00 16.00 28.00 274.00 394.00 742.00 504.00 394.50 57.50 0.00 0.00 2410.00
1967 0.00 0.00 5.00 3.50 211.50 335.89 b 676.50 629.50 386.00 80.00 1.50 0.00 2329.39
1968 0.00 a 0.00 2.50 45.50 147.00 346.00 619.50 515.50 282.00 66.00 0.00 0.00 2024.00
1969 0.00 0.00 0.50 105.00 225.50 324.00 599.50 654.50 343.50 18.00 6.00 0.00 a 2276.50
1970 0.00 a 0.00 c 0.00 15.50 213.50 501.43 b 655.50 634.50 218.89 c 55.50 0.00 0.00 2294.82
1971 0.00 0.00 4.50 15.50 208.00 431.50 549.00 751.00 233.50 86.00 4.00 0.00 2283.00
1972 0.00 c 0.00 37.00 23.50 223.50 500.00 501.50 631.50 211.50 49.50 0.00 0.00 2178.00
1973 0.00 0.00 0.00 3.50 188.77 c 462.00 600.00 650.00 265.00 87.00 0.00 a 0.00 2256.27
1974 0.00 0.00 11.00 80.00 109.00 467.50 715.00 462.00 204.00 112.00 0.00 0.00 2160.50
1975 0.00 0.00 0.00 8.50 115.50 329.50 721.50 516.50 256.61 b 65.00 15.60 e 0.00 2028.71
1976 0.00 0.00 2.50 44.50 200.00 299.00 642.00 530.10 a 250.71 b 58.00 0.00 b 0.00 2026.81
1977 0.00 d 0.50 4.50 93.62 a 223.20 a 505.50 598.50 458.00 205.00 38.00 0.00 0.00 a 2126.82
1978 0.00 0.00 29.50 32.00 147.00 358.39 b 510.98 a 472.50 304.00 40.00 1.50 0.00 1895.88
1979 0.00 0.00 0.00 18.10 a 144.67 a 406.07 b 581.00 504.00 308.50 81.50 0.00 1.00 2044.84
1980 0.00 0.00 0.00 115.00 244.00 390.50 625.50 411.00 243.62 a 96.50 7.00 6.00 2139.12
1981 0.00 3.50 7.20 c 73.97 a 164.50 313.50 593.81 b 594.17 a 272.31 d 7.20 c 1.50 0.00 a 2031.64
1982 0.00 a 1.00 0.00 33.50 121.50 304.00 519.00 607.50 235.00 20.00 0.00 0.00 1841.50
1983 0.00 0.00 5.50 46.50 145.50 336.50 585.50 746.00 263.00 24.50 11.00 0.00 2164.00
1984 0.00 0.00 0.00 29.50 168.95 a 344.50 653.00 692.50 214.50 72.00 0.00 0.00 2174.95
1985 0.00 0.00 0.00 97.00 294.00 329.00 649.50 454.67 a 166.50 21.50 2.00 0.00 2014.17
1986 0.00 1.00 41.50 47.59 a 180.50 567.50 531.50 529.00 119.50 43.00 0.00 a 0.00 2061.09
1987 0.00 0.00 11.88 a 131.50 300.00 470.00 550.25 c 424.50 258.50 54.50 9.00 0.00 b 2210.13
1988 0.00 0.00 15.50 55.00 267.00 686.50 676.50 540.00 208.50 81.00 0.50 0.00 2530.50
1989 0.00 0.00 0.00 55.50 150.50 355.50 674.00 499.50 238.00 52.00 9.50 0.00 2034.50
1990 0.00 0.00 0.00 72.00 129.00 398.50 574.00 588.50 392.00 51.50 21.00 0.00 2226.50
1991 0.00 0.00 1.50 41.00 209.00 407.00 614.50 671.00 286.00 117.00 0.00 0.00 2347.00
1992 0.00 2.00 8.50 85.00 231.50 411.00 418.50 0.00 z 252.00 88.00 0.00 0.00 a 1496.50
1993 0.00 z 0.00 z 0.00 z 0.00 z 232.50 353.50 360.50 410.00 165.50 67.50 0.00 0.00 1589.50
1994 0.00 0.00 14.00 91.00 257.00 399.00 593.00 641.50 331.00 29.50 0.00 0.00 2356.00
1995 0.00 11.50 6.00 14.00 103.50 388.50 549.50 573.00 288.50 51.00 0.00 z 0.00 z 1985.50
1996 0.00 z 0.00 t 0.00 p 54.50 n 76.00 p 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 565.75 a 576.50 348.50 71.50 0.00 0.00 1562.25
1998 0.00 0.00 3.00 56.00 215.00 269.50 757.50 701.00 490.50 44.50 0.00 0.00 2537.00
1999 0.00 0.00 9.50 37.50 176.00 385.00 603.50 646.50 204.00 57.50 29.00 0.00 2148.50
2000 0.00 0.00 4.50 71.00 0.00 z 387.50 735.50 650.00 307.00 39.50 0.00 0.00 2195.00
2001 0.00 0.00 1.50 135.00 273.00 402.50 718.50 708.00 368.50 45.00 5.00 0.00 2657.00
2002 0.00 0.00 0.00 30.50 170.00 441.50 759.00 475.00 301.50 23.50 0.00 0.00 2201.00
2003 0.00 z 0.00 12.00 96.50 215.00 365.50 768.50 731.50 248.50 147.50 0.00 0.00 2585.00
2004 0.00 0.00 14.00 66.00 152.50 305.00 624.50 497.00 237.00 45.00 6.50 0.00 1947.50
2005 0.00 1.00 11.50 0.00 z 150.00 369.50 659.00 533.00 266.00 0.00 z 3.00 0.00 1993.00
2006 0.00 0.00 2.00 60.00 233.50 486.50 763.00 584.50 237.50 44.50 10.00 0.00 2421.50
2007 0.00 0.00 32.50 52.50 226.00 424.50 813.00 608.00 327.00 48.50 9.00 0.00 2541.00
2008 0.00 0.00 1.50 41.00 178.50 365.50 681.00 639.00 197.00 64.00 8.50 0.00 2176.00
2009 0.00 0.00 0.50 56.50 206.00 329.50 565.50 530.00 396.00 16.00 4.50 0.00 2104.50
2010 0.00 0.00 14.00 58.00 131.50 404.50 627.50 631.50 284.00 157.50 13.00 0.00 2321.50
2011 0.00 c 0.00 h 0.55 c 16.50 96.21 b 411.50 761.50 737.28 a 372.69 d 135.00 0.00 0.00 2531.24
2012 0.00 0.00 29.00 113.57 b 192.20 a 504.50 823.00 645.50 340.50 49.00 4.50 0.00 2701.77
2013 0.00 0.00 3.10 a 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 3.10
Period of Record Statistics
MEAN 0.06 0.57 6.01 54.88 198.41 401.86 643.44 581.59 268.98 69.16 3.14 0.16 2229.91
S.D. 0.51 2.17 8.62 35.68 65.82 87.08 90.31 78.89 73.65 36.39 5.46 0.93 226.53
SKEW 9.48 5.37 2.01 0.93 0.78 0.70 -0.32 0.11 0.37 0.75 2.29 6.64 0.68
MAX 5.00 16.00 41.50 167.00 415.50 686.50 899.50 751.00 490.50 211.50 29.00 7.00 3010.97
MIN 0.00 0.00 0.00 3.50 82.00 241.50 360.50 410.00 80.00 7.20 0.00 0.00 1826.07
NO YRS 98 99 100 98 99 100 101 100 101 100 100 100 92