POLEBRIDGE, MONTANA

Monthly Total Growing Degree Days

(246615)

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
1933 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 194.50 n 322.50 27.00 j 1.50 n 0.00 k 0.00 i 322.50
1934 0.00 j 0.00 l 0.00 k 14.50 f 115.50 l 119.44 c 353.50 318.50 85.38 d 18.94 d 0.00 j 0.00 e 895.77
1935 0.00 d 0.00 o 0.00 z 0.00 n 13.50 l 89.50 0.00 z 125.00 j 71.50 5.00 0.00 0.00 a 166.00
1936 0.00 h 0.00 g 0.00 e 15.50 f 147.00 257.50 472.00 343.50 93.50 12.00 0.00 h 0.00 b 1325.50
1937 0.00 b 0.00 e 0.00 r 1.50 49.50 185.50 433.48 a 283.00 184.00 3.00 0.00 a 0.00 e 1139.98
1938 0.00 0.00 d 0.00 c 0.00 e 44.43 a 209.40 e 396.00 221.00 139.00 j 0.00 z 0.00 t 0.00 j 870.83
1939 0.00 m 0.00 k 0.00 v 0.00 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 0.00 q 0.00 a 0.00
1946 0.00 0.00 0.00 k 0.00 p 22.00 n 159.50 364.00 297.00 76.00 1.00 o 0.00 0.00 l 896.50
1947 0.00 0.00 k 0.00 0.00 p 77.50 113.00 417.50 268.50 95.00 21.00 0.00 0.00 e 992.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 255.46 d 265.29 e 32.00 f 1.00 0.00 0.00 521.75
1949 0.00 0.00 0.00 a 0.00 94.11 c 126.92 d 287.30 c 292.00 84.00 1.00 0.00 a 0.00 885.33
1950 0.00 0.00 a 0.00 0.00 15.50 120.00 b 308.00 276.00 109.00 8.00 0.00 a 0.00 836.50
1951 0.00 0.00 a 0.00 0.00 31.00 72.93 a 323.50 226.00 36.72 a 1.00 0.00 0.00 691.16
1952 0.00 0.00 a 0.00 8.00 27.00 129.50 288.50 273.50 126.00 0.00 0.00 0.00 852.50
1953 0.00 0.00 0.00 1.00 23.00 104.48 a 320.50 305.50 113.00 7.00 0.00 b 0.00 874.48
1954 0.00 a 0.00 0.00 0.00 51.00 89.50 301.50 236.00 48.10 a 0.00 0.00 0.00 726.10
1955 0.00 0.00 0.00 b 0.00 5.00 154.50 312.21 c 246.93 b 82.22 c 19.50 0.00 0.00 820.37
1956 0.00 0.00 0.00 0.00 a 94.50 163.00 354.84 c 280.60 b 103.97 a 0.00 d 0.00 0.00 a 996.91
1957 0.00 0.00 0.00 6.50 69.50 183.50 296.64 b 208.00 99.50 14.50 0.00 a 0.00 a 878.14
1958 0.00 0.00 0.00 0.50 156.55 a 218.50 340.48 a 420.00 120.00 a 1.00 0.00 0.00 a 1257.03
1959 0.00 0.00 0.00 a 0.00 5.00 174.00 327.64 b 212.19 b 91.03 a 0.00 a 0.00 0.00 b 809.86
1960 0.00 0.00 b 0.00 b 1.00 25.50 126.43 b 446.00 241.80 a 94.00 6.50 0.00 0.00 941.23
1961 0.00 0.00 0.00 0.00 85.77 a 282.41 a 391.12 a 442.00 39.00 4.50 0.00 0.00 1244.80
1962 0.00 c 0.00 0.00 a 6.43 b 24.00 144.64 b 283.13 a 226.00 52.24 a 2.50 0.00 a 0.00 738.95
1963 0.00 0.00 c 0.00 6.00 44.90 b 182.59 a 272.59 b 293.97 b 173.04 b 10.33 a 0.00 a 0.00 a 983.40
1964 0.00 a 0.00 0.00 a 0.00 a 21.00 105.54 b 338.33 b 181.87 a 18.10 a 0.53 b 0.00 a 0.00 665.37
1965 0.00 a 0.00 0.00 b 0.00 z 19.12 a 153.00 330.84 b 329.93 c 2.68 b 6.72 a 0.00 a 0.00 a 842.29
1966 0.00 0.00 0.00 0.00 113.15 a 93.10 a 344.74 b 236.24 b 169.66 a 2.00 0.00 c 0.00 b 958.89
1967 0.00 a 0.00 a 0.00 a 0.00 b 38.50 139.66 a 422.00 450.00 311.50 16.69 e 0.00 z 0.00 1378.35
1968 0.00 z 0.00 z 0.00 z 0.00 z 18.50 167.00 354.00 249.00 117.50 2.00 p 0.00 0.00 906.00
1969 0.00 0.00 0.00 0.00 m 46.50 d 194.00 272.00 320.50 151.00 0.00 i 0.00 t 0.00 d 984.00
1970 0.00 a 0.00 0.00 j 0.00 p 17.00 u 301.50 0.00 z 352.00 39.64 b 13.50 0.00 0.00 706.64
1971 0.00 0.00 0.00 0.00 60.00 95.00 266.08 a 410.48 b 33.89 c 5.96 e 0.00 0.00 871.42
1972 0.00 0.00 a 0.00 0.00 43.00 181.73 d 242.46 c 396.59 b 54.64 b 0.00 b 0.00 a 0.00 918.42
1973 0.00 c 0.00 0.00 f 0.00 a 57.50 175.71 b 356.50 b 270.50 i 68.40 e 0.00 h 0.00 0.00 e 658.11
1974 0.00 a 0.00 0.00 2.50 14.47 a 259.20 e 0.00 z 185.50 h 41.50 h 0.00 z 0.00 c 0.00 276.17
1975 0.00 a 0.00 a 0.00 e 0.00 11.00 102.50 214.00 o 186.53 b 63.50 1.00 0.00 0.00 364.53
1976 0.00 0.00 0.00 0.00 64.50 71.00 288.00 275.50 94.50 10.00 0.00 0.00 803.50
1977 0.00 0.00 0.00 15.50 18.00 208.50 264.02 a 229.00 35.00 0.00 0.00 0.00 770.02
1978 0.00 0.00 0.00 5.00 11.00 169.00 303.50 177.00 104.00 0.50 1.00 0.00 771.00
1979 0.00 0.00 0.00 0.00 39.78 a 162.00 e 300.00 319.00 0.00 z 7.50 0.00 0.00 828.28
1980 0.00 z 0.00 b 0.00 f 28.00 80.00 141.50 270.50 144.50 62.50 8.00 0.00 0.00 735.00
1981 0.00 0.00 0.00 7.50 78.50 64.50 263.00 348.00 93.00 1.00 0.00 0.00 b 855.50
1982 0.00 0.00 0.00 0.00 27.50 213.50 249.50 242.00 62.50 3.50 0.00 0.00 798.50
1983 0.00 0.00 0.00 4.00 63.00 128.00 206.50 355.50 38.50 0.00 0.00 0.00 795.50
1984 0.00 0.00 0.00 7.00 27.00 129.50 310.50 316.00 38.00 2.50 0.00 0.00 830.50
1985 0.00 0.00 0.00 1.50 86.50 117.50 412.00 203.00 23.50 0.00 0.00 0.00 844.00
1986 0.00 0.00 0.00 5.00 108.50 273.00 192.50 341.00 26.50 0.00 0.00 0.00 946.50
1987 0.00 0.00 0.00 23.79 a 74.50 223.00 305.50 159.00 91.50 3.50 0.00 0.00 880.79
1988 0.00 0.00 0.00 7.00 46.00 251.00 283.50 267.50 136.00 15.50 0.00 0.00 1006.50
1989 0.00 0.00 0.00 4.00 41.50 191.00 407.50 273.00 47.00 0.00 0.00 0.00 964.00
1990 0.00 0.00 0.00 2.50 34.50 154.50 307.00 352.00 146.00 5.50 0.00 0.00 1002.00
1991 0.00 0.00 0.00 2.50 39.50 123.00 0.00 z 0.00 z 79.50 7.50 0.00 0.00 252.00
1992 0.00 0.00 0.00 14.00 75.00 284.00 0.00 z 0.00 z 43.50 32.00 0.00 0.00 448.50
1993 0.00 0.00 0.00 1.00 141.50 130.50 126.00 199.50 70.00 5.00 0.00 0.00 673.50
1994 0.00 0.00 0.00 0.00 z 74.00 140.50 388.50 344.50 93.50 6.50 0.00 0.00 1047.50
1995 0.00 0.00 0.00 0.00 33.50 152.50 333.00 164.00 131.50 2.50 0.00 0.00 817.00
1996 0.00 0.00 0.00 2.50 12.50 167.00 371.50 311.00 63.00 6.50 0.00 0.00 934.00
1997 0.00 0.00 0.00 0.00 41.50 132.00 254.00 265.50 86.50 14.00 0.00 0.00 793.50
1998 0.00 0.00 0.00 9.50 64.50 104.50 427.00 356.00 189.50 0.50 0.00 0.00 1151.50
1999 0.00 0.00 0.00 0.00 24.00 90.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 114.00
2000 0.00 z 0.00 z 0.00 0.00 17.50 111.00 253.00 g 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 128.50
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 0.00 e 0.00 0.00 4.50 59.50 217.00 b 282.10 a 103.00 5.00 0.00 0.00 671.10
2012 0.00 a 0.00 0.00 a 12.22 c 13.50 109.62 d 341.57 d 267.24 b 62.50 5.34 b 0.00 g 0.00 l 812.00
2013 0.00 k 0.00 e 0.00 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 0.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 3.65 50.10 155.35 320.28 282.23 88.01 6.03 0.02 0.00 875.26
S.D. 0.00 0.00 0.00 6.00 36.21 58.02 68.36 70.75 52.34 6.75 0.14 0.00 138.67
SKEW 0.00 0.00 0.00 2.36 1.08 0.69 -0.08 0.29 1.57 1.59 7.14 0.00 0.96
MAX 0.00 0.00 0.00 28.00 156.55 301.50 472.00 450.00 311.50 32.00 1.00 0.00 1257.03
MIN 0.00 0.00 0.00 0.00 4.50 59.50 126.00 144.50 2.68 0.00 0.00 0.00 665.37
NO YRS 56 56 54 51 57 61 54 56 56 54 54 58 38