COUNCIL, IDAHO

Monthly Total Growing Degree Days

(102187)

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
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 995.00 879.50 533.50 0.00 z 9.00 g 0.00 2408.00
1912 0.00 0.00 45.00 186.00 502.50 773.00 874.64 c 834.93 a 480.00 219.50 63.50 0.00 g 3979.08
1913 0.00 0.00 1.50 217.00 516.00 705.54 b 867.50 962.07 b 608.65 d 180.50 59.48 a 0.00 b 4118.24
1914 0.00 g 0.00 a 70.00 158.00 o 561.32 c 605.00 966.68 a 963.58 a 507.00 335.50 66.43 b 0.00 f 4075.52
1915 0.00 b 9.33 a 0.00 z 434.00 393.00 590.50 851.00 1120.00 556.00 335.50 29.00 2.00 4320.33
1916 0.00 a 0.00 29.50 237.50 317.00 598.50 863.50 878.00 593.00 200.00 29.50 0.00 3746.50
1917 0.00 0.00 0.00 58.50 370.00 568.50 1045.00 990.50 681.50 351.00 98.50 93.50 4257.00
1918 12.00 0.00 95.00 227.00 406.00 882.50 956.00 767.00 681.00 328.50 20.50 2.00 4377.50
1919 2.50 0.00 50.50 287.00 490.50 742.00 1028.00 999.00 623.00 176.50 0.00 z 0.00 z 4399.00
1920 1.00 0.00 14.00 108.50 378.50 604.00 1032.50 948.50 596.00 178.00 11.00 0.00 3872.00
1921 0.00 0.00 24.50 120.50 470.50 742.00 964.50 928.50 413.00 386.50 79.50 4.00 4133.50
1922 0.00 0.00 10.50 102.50 411.00 855.00 1017.50 980.00 691.00 369.00 8.50 0.00 4445.00
1923 0.00 7.50 29.50 174.00 434.50 570.50 997.17 a 929.00 717.00 238.50 55.00 0.00 4152.67
1924 0.00 7.50 6.00 237.50 655.50 715.00 1015.00 944.00 664.00 291.50 47.50 0.00 4583.50
1925 0.00 0.52 a 67.54 c 289.50 604.50 734.00 1102.00 881.00 593.00 281.00 19.00 4.00 4576.05
1926 0.00 0.00 127.00 424.50 451.50 804.50 1086.00 965.00 448.00 333.25 a 64.50 13.95 a 4718.20
1927 0.00 0.00 29.50 192.00 363.00 723.50 989.50 879.00 498.50 277.00 74.50 1.50 4028.00
1928 0.00 a 0.00 60.00 164.50 692.50 650.50 1062.50 897.00 657.00 224.50 26.50 0.00 4435.00
1929 0.00 0.00 17.00 146.00 455.50 591.50 941.00 998.50 465.00 291.00 13.50 55.00 3974.00
1930 0.00 3.50 84.50 375.00 403.50 623.50 1036.50 970.00 604.50 224.00 37.50 0.00 a 4362.50
1931 0.00 0.00 25.50 237.00 572.00 751.50 1096.00 1019.00 584.50 323.50 72.00 0.00 4681.00
1932 0.00 a 0.00 14.50 212.50 476.00 769.50 955.00 880.50 689.50 264.00 23.50 0.50 4285.50
1933 9.50 0.00 2.50 180.50 351.00 789.00 1057.00 939.50 549.50 461.79 b 57.00 11.50 4408.79
1934 9.00 64.00 216.00 453.00 666.00 690.50 1020.50 1028.00 523.00 379.00 128.00 0.00 5177.00
1935 0.00 0.00 15.50 182.50 438.50 691.50 965.50 919.00 720.00 353.50 2.00 0.00 4288.00
1936 0.00 0.00 2.00 358.50 615.00 742.00 1099.50 986.50 581.00 409.00 17.00 1.00 4811.50
1937 0.00 0.00 18.00 148.00 537.50 657.00 1049.00 881.00 699.50 390.00 46.15 d 12.50 4438.65
1938 0.00 9.00 29.50 267.00 449.50 770.69 a 999.50 898.50 785.00 354.50 0.00 z 0.00 z 4563.19
1939 0.00 z 0.00 z 0.00 z 367.00 592.50 604.00 1020.50 1020.00 647.00 308.50 48.00 55.00 4662.50
1940 1.50 9.50 98.00 242.50 608.00 849.50 1026.50 0.00 z 645.50 350.00 14.00 1.03 a 3846.03
1941 0.00 0.52 a 122.50 257.50 467.58 a 611.38 a 1030.50 880.00 468.75 b 277.50 84.00 16.50 4216.73
1942 0.00 0.00 28.50 274.50 0.00 z 0.00 z 1110.50 1006.95 c 699.50 380.50 17.14 b 0.00 b 3517.59
1943 0.00 0.00 39.00 357.41 a 413.50 598.00 991.47 b 905.50 786.00 373.50 39.50 0.50 4504.38
1944 502.00 0.50 36.00 230.00 553.50 607.76 a 961.00 929.00 686.50 515.00 37.50 0.00 5058.76
1945 0.00 2.00 60.00 210.00 517.50 592.50 1003.50 957.00 506.00 415.00 27.50 0.00 4291.00
1946 0.00 0.00 65.50 336.50 535.00 714.50 1007.50 973.50 549.83 a 152.42 a 9.00 22.00 4365.74
1947 0.00 20.00 157.00 281.50 657.00 569.50 1017.50 885.50 610.00 370.00 17.68 b 1.03 a 4586.71
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 847.50 615.50 337.00 22.50 0.00 1822.50
1949 0.00 3.00 50.00 356.50 644.50 681.00 968.50 1023.50 738.50 167.83 b 102.50 0.00 4735.83
1950 1.66 c 0.00 14.50 183.50 401.00 643.00 950.50 958.50 652.00 359.00 61.00 0.00 4224.66
1951 0.00 3.50 14.50 310.00 483.00 604.00 1016.50 925.50 640.00 272.69 d 25.00 4.00 4298.69
1952 0.00 0.00 1.00 206.00 l 527.50 694.00 969.00 935.00 745.00 402.00 15.50 0.00 4289.00
1953 14.00 10.00 g 0.00 z 228.50 389.00 598.50 1064.00 994.00 765.00 369.00 86.00 0.00 4508.00
1954 0.00 14.50 43.50 229.50 590.00 609.50 1025.50 890.00 634.00 269.00 91.00 0.00 4396.50
1955 0.00 0.00 0.00 81.00 427.00 740.50 936.00 1101.00 652.50 318.00 14.00 16.00 4286.00
1956 0.00 6.50 88.00 300.00 599.00 688.00 1081.00 950.00 666.50 267.00 27.50 1.50 4675.00
1957 0.00 1.00 56.00 253.50 589.50 744.50 994.50 965.50 755.00 298.00 14.00 1.00 4672.50
1958 0.00 4.00 37.50 186.00 711.00 769.14 a 1006.00 1072.00 577.78 c 323.00 28.50 1.50 4716.42
1959 0.00 0.00 13.50 275.89 b 380.50 792.00 1044.00 872.50 527.00 274.50 7.00 0.00 4186.89
1960 0.00 0.00 58.00 264.00 392.00 747.00 1106.50 806.00 676.00 0.00 z 0.00 z 0.00 x 4049.50
1961 0.00 14.50 104.50 215.50 559.00 973.00 1127.50 1154.50 491.00 252.00 0.50 4.00 4896.00
1962 0.00 c 0.50 28.02 e 344.50 425.45 b 748.50 963.00 878.85 a 655.86 a 281.58 a 80.00 7.00 4413.26
1963 0.00 a 51.50 82.50 o 181.50 568.50 651.00 910.76 b 1026.50 761.50 418.00 50.00 0.00 4619.26
1964 0.00 0.00 0.00 a 151.00 415.40 a 626.50 995.00 832.50 555.52 a 326.00 28.50 14.00 3944.42
1965 0.00 0.00 d 27.50 p 294.00 437.00 723.00 972.00 882.00 469.50 368.50 97.50 1.50 4245.00
1966 3.00 0.00 103.00 g 247.50 600.00 663.00 1005.00 958.00 774.50 225.50 75.00 4.00 4555.50
1967 0.50 0.00 o 30.50 r 113.50 461.50 684.00 1110.50 1109.00 776.50 240.00 83.50 1.50 m 4579.00
1968 0.00 e 20.50 107.39 c 178.00 462.93 a 732.78 c 1125.00 867.50 626.00 265.50 25.50 9.00 4420.10
1969 0.00 0.00 19.50 291.50 613.50 726.00 981.00 1013.00 681.00 173.00 59.50 1.50 4559.50
1970 10.00 12.00 21.00 93.00 512.50 823.00 1058.50 1071.50 500.50 244.00 48.00 0.00 4394.00
1971 0.00 0.00 39.50 231.00 617.00 645.00 1056.50 1155.00 517.50 306.90 a 3.50 0.00 4571.90
1972 0.00 6.00 158.50 196.50 603.00 816.50 999.50 1076.50 502.50 399.00 48.50 0.52 a 4807.02
1973 0.00 b 4.48 c 66.50 273.50 580.00 771.00 1107.00 1014.50 657.00 297.50 49.00 0.00 a 4820.48
1974 5.17 a 0.00 79.00 269.44 c 436.14 b 915.50 1035.40 a 1002.00 735.00 b 377.00 60.00 2.00 4916.65
1975 0.00 0.00 11.50 113.00 437.50 670.50 1159.50 874.00 784.00 311.50 53.00 1.50 4416.00
1976 0.00 3.50 2.00 229.00 615.50 666.50 1052.00 828.50 750.50 282.50 90.50 0.00 4520.50
1977 0.00 15.50 38.00 437.50 361.50 931.00 1017.50 1028.50 624.31 a 331.00 32.50 14.50 4831.81
1978 0.00 7.50 223.00 252.00 415.00 710.00 1017.00 927.50 590.50 387.50 48.00 0.00 4578.00
1979 0.00 0.00 84.00 244.00 537.50 781.50 1079.00 1011.50 779.00 429.50 45.00 0.00 4991.00
1980 3.10 a 30.50 32.00 322.50 529.50 627.50 1008.00 871.50 652.76 a 312.00 84.50 9.00 4482.86
1981 1.00 4.50 117.28 a 265.38 d 472.50 646.50 971.00 1108.50 730.50 210.91 c 82.50 b 7.50 4618.08
1982 0.00 0.00 44.50 142.78 c 450.07 d 751.50 907.00 1052.00 613.00 248.00 1.00 n 0.00 a 4208.85
1983 0.00 7.00 123.00 74.50 p 226.50 p 710.00 900.50 1026.00 604.00 344.62 a 71.00 l 0.00 j 3715.12
1984 0.00 j 0.00 i 20.50 l 98.00 l 423.00 621.00 1029.50 1035.50 572.50 249.03 a 2.50 m 0.00 3930.53
1985 0.00 0.00 6.00 325.00 570.00 759.50 1201.50 872.00 471.00 185.50 26.50 0.00 4417.00
1986 0.00 23.50 195.50 255.00 467.21 c 904.00 875.50 1125.00 528.00 301.50 0.00 z 0.00 4675.21
1987 0.00 0.00 128.50 463.00 643.00 803.50 900.50 884.00 727.50 402.50 92.59 a 12.00 5057.09
1988 0.00 2.00 43.83 b 311.90 a 504.78 a 874.50 1066.50 986.50 659.50 576.00 66.00 0.00 5091.51
1989 0.00 q 0.00 44.36 b 374.50 140.00 v 0.00 z 0.00 z 0.00 z 397.50 k 244.50 5.50 0.50 l 668.86
1990 3.50 k 0.00 u 71.50 v 251.50 l 283.00 j 393.50 l 674.50 l 763.00 i 518.00 m 191.00 k 7.50 j 0.00 n 0.00
1991 0.50 l 47.50 i 87.50 k 317.50 385.00 i 389.50 k 654.00 j 708.00 j 467.00 j 151.50 m 38.00 o 1.00 l 317.50
1992 0.00 k 20.00 l 132.50 j 170.00 n 388.00 m 550.00 j 628.50 i 625.50 m 396.50 m 156.00 m 8.50 k 0.00 o 0.00
1993 0.00 n 0.00 j 20.84 b 156.72 a 407.50 l 382.50 i 459.50 k 595.00 i 433.50 i 242.50 l 11.00 p 0.00 j 177.57
1994 0.00 n 0.00 j 91.00 j 203.50 l 415.00 k 765.50 683.50 m 1121.17 a 484.00 k 181.50 m 8.50 j 0.00 o 1886.67
1995 0.00 k 25.00 m 41.50 j 147.00 l 333.50 k 665.69 a 576.00 m 870.50 461.50 k 131.50 j 37.00 m 26.50 n 1536.19
1996 0.00 n 5.50 l 77.50 m 228.10 a 274.50 i 460.00 k 664.50 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 l 228.10
1997 0.00 t 1.00 r 0.00 z 0.00 z 315.50 n 504.50 j 589.00 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1998 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 425.50 p 168.00 o 15.00 q 6.00 z 0.00
1999 0.00 s 7.50 q 0.00 z 53.00 u 186.00 s 245.00 s 412.00 s 795.50 h 220.50 s 167.50 s 45.50 v 0.00 x 0.00
2000 0.00 p 0.50 m 48.50 i 269.50 j 347.00 k 505.50 k 642.50 m 833.00 h 434.50 k 189.00 l 2.00 l 0.00 k 0.00
2001 0.00 k 0.00 j 69.00 i 136.00 j 326.50 k 375.50 n 596.50 m 843.50 h 300.50 q 176.50 m 32.00 o 0.00 n 0.00
2002 0.00 m 0.00 n 14.50 k 157.00 k 252.50 m 395.00 p 842.00 j 647.00 i 398.00 m 218.50 i 8.00 o 6.00 m 0.00
2003 5.00 o 1.00 k 81.00 m 164.00 i 296.50 l 428.00 n 785.50 k 691.50 l 299.00 p 301.50 l 10.00 m 4.00 n 0.00
2004 0.00 q 0.50 m 66.50 n 162.00 p 208.00 q 435.00 m 477.50 q 474.50 p 376.00 l 218.50 p 36.00 k 4.00 l 0.00
2005 0.00 o 0.00 t 64.50 m 147.50 m 261.50 m 369.50 m 544.50 o 575.50 n 219.50 r 64.00 w 8.00 o 0.00 n 0.00
2006 0.00 r 1.50 m 30.00 o 141.50 n 357.50 o 334.50 q 558.50 q 423.00 s 280.50 q 159.00 o 42.00 q 1.00 y 0.00
2007 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 997.50 664.50 261.00 40.50 6.50 g 1963.50
2008 0.00 f 0.00 4.00 111.50 498.00 691.00 1079.50 1001.00 617.00 287.00 68.00 1.50 4358.50
2009 0.00 0.00 43.50 222.50 521.50 692.50 841.50 f 981.50 241.50 u 158.50 g 31.50 0.00 2493.00
2010 0.00 0.00 49.00 204.50 322.00 656.00 962.50 914.00 651.00 427.00 82.00 0.00 4268.00
2011 0.00 0.00 24.50 91.00 386.00 594.00 953.00 1048.50 776.50 310.52 a 0.50 0.00 c 4184.52
2012 0.00 b 4.00 99.00 324.50 467.50 693.00 1146.50 1089.28 b 726.67 c 250.67 b 90.00 18.00 4909.11
2013 0.00 0.00 86.28 a 14.00 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 86.28
Period of Record Statistics
MEAN 7.38 4.73 54.11 243.43 498.42 708.70 1012.81 963.07 629.07 310.77 46.58 5.65 4486.58
S.D. 56.80 10.60 50.93 91.13 94.75 92.00 71.18 85.41 95.51 80.25 30.07 14.20 314.48
SKEW 8.63 3.68 1.42 0.29 0.22 0.63 -0.03 0.25 -0.19 0.40 0.38 4.32 0.09
MAX 502.00 64.00 223.00 463.00 711.00 973.00 1201.50 1155.00 786.00 576.00 128.00 93.50 5177.00
MIN 0.00 0.00 0.00 58.50 317.00 568.50 851.00 767.00 413.00 152.42 0.50 0.00 3746.50
NO YRS 78 79 76 81 79 82 81 85 83 82 77 76 60