JEROME, IDAHO

Monthly Total Growing Degree Days

(104670)

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
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 291.00 m 406.50 64.00 11.00 481.50
1916 0.00 0.00 142.00 287.00 373.00 614.50 926.00 873.50 592.50 244.00 33.50 0.00 a 4086.00
1917 0.00 1.50 4.00 128.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 112.50 78.57 b 324.57
1918 11.50 6.50 148.50 230.00 c 405.50 935.00 1046.77 a 808.14 b 523.00 f 328.00 36.50 20.84 b 3977.25
1919 6.72 a 0.00 a 73.00 302.59 a 574.61 c 781.55 a 604.50 m 1020.33 b 673.50 174.24 b 27.50 0.00 b 3634.03
1920 9.30 a 7.00 39.50 168.75 b 450.05 c 717.32 b 1082.23 c 944.50 647.59 a 269.18 a 41.11 c 1.50 4378.04
1921 8.86 c 14.00 a 35.00 u 153.89 c 479.00 769.50 991.50 957.50 442.00 381.00 109.50 12.50 4319.25
1922 0.00 d 0.00 m 28.00 128.00 438.00 808.50 955.00 983.50 649.50 413.00 19.00 6.00 4428.50
1923 6.00 0.00 n 59.00 228.62 a 513.00 645.00 1062.00 930.00 704.00 224.50 61.50 1.00 4434.62
1924 0.50 24.50 15.00 237.50 669.00 773.00 1049.00 962.00 705.00 326.50 71.50 0.00 4833.50
1925 0.00 16.00 134.50 301.00 644.00 728.50 1141.00 921.00 610.50 244.50 18.00 9.00 4768.00
1926 0.00 19.00 141.00 453.50 599.00 915.50 1117.50 1040.50 491.00 368.50 97.00 24.50 5267.00
1927 11.50 7.00 71.50 237.50 429.50 791.00 1059.00 948.00 568.50 404.00 131.00 6.00 4664.50
1928 1.50 1.00 135.50 201.50 289.00 o 462.86 b 1069.00 929.50 656.90 a 353.83 b 0.00 z 0.00 3811.58
1929 0.00 0.00 19.50 193.50 543.05 c 729.81 d 0.00 z 1096.50 519.50 400.50 26.50 51.15 a 3580.01
1930 0.00 58.00 127.00 448.00 477.50 755.50 1124.50 1073.00 653.00 272.00 89.00 0.00 5077.50
1931 0.00 0.54 b 84.50 314.00 630.50 877.76 a 1152.74 d 1038.50 671.50 385.90 b 115.00 0.00 5270.93
1932 0.00 0.50 56.00 283.50 474.00 686.50 1016.50 879.50 687.00 298.00 128.00 4.00 4513.50
1933 0.00 0.00 37.50 239.50 405.50 920.50 1145.50 975.00 640.00 493.50 85.00 42.00 4984.00
1934 16.00 100.50 69.00 t 494.50 789.00 731.50 1127.00 1076.00 628.50 470.00 192.00 1.50 5626.50
1935 0.00 6.00 69.00 236.00 443.00 761.00 1054.00 1002.50 750.50 363.50 0.00 0.00 4685.50
1936 0.00 1.00 22.50 424.50 692.50 877.00 1170.25 c 1011.50 621.21 a 370.50 0.00 z 4.50 5195.46
1937 0.00 0.00 41.50 162.00 i 615.00 709.66 a 1099.00 970.00 777.50 187.50 r 10.50 s 13.50 4226.16
1938 5.00 16.50 34.50 214.00 f 546.52 d 803.00 1040.50 1000.00 850.50 395.50 8.50 3.00 4703.52
1939 1.50 0.00 143.00 358.50 657.50 691.00 1045.00 1033.00 705.00 331.00 101.50 80.00 5147.00
1940 4.50 30.00 149.50 278.00 690.50 923.50 1094.50 1045.00 659.50 381.50 41.00 16.00 5313.50
1941 0.00 24.00 149.50 214.50 j 630.50 753.50 1125.50 990.00 529.50 310.00 136.50 19.00 4668.00
1942 0.00 0.00 37.50 338.00 391.00 659.50 1116.00 1006.00 708.50 404.50 69.50 0.00 b 4730.50
1943 9.50 0.00 81.00 420.00 441.50 608.00 1002.50 929.00 719.50 390.00 69.00 10.00 4680.00
1944 0.00 3.00 38.50 209.50 560.00 591.50 981.50 913.50 674.50 530.50 33.00 0.00 4535.50
1945 4.00 0.50 56.50 192.00 479.50 598.00 1053.00 1007.00 557.00 384.50 31.00 3.50 4366.50
1946 0.00 0.00 78.50 346.50 479.50 741.00 577.00 n 1010.50 646.50 136.50 10.50 29.50 3479.00
1947 1.00 19.00 162.50 277.50 670.50 630.50 1099.00 960.00 653.50 375.00 23.00 0.00 4871.50
1948 4.00 6.00 27.50 212.00 506.00 775.50 944.50 921.00 611.50 346.50 31.00 0.00 4385.50
1949 0.00 0.00 26.50 345.00 570.00 716.50 678.00 j 992.52 a 718.50 202.03 b 146.50 0.00 3717.55
1950 5.50 16.00 47.50 178.50 374.50 642.00 923.00 439.50 p 123.00 v 457.00 92.59 a 7.00 2743.59
1951 2.00 11.00 20.50 291.00 488.00 658.50 1089.00 919.67 a 653.00 254.50 44.50 0.50 4432.17
1952 0.00 0.00 17.50 335.00 558.50 718.50 978.00 954.50 716.50 481.50 19.00 2.00 4781.00
1953 52.00 29.00 96.50 192.50 321.88 a 605.00 1045.50 946.00 718.00 411.00 167.50 0.00 c 4584.88
1954 13.00 33.50 41.33 a 277.50 598.50 630.50 1044.00 865.00 648.00 278.45 c 125.17 a 1.50 4556.45
1955 0.00 0.00 14.98 a 149.50 429.87 a 766.07 b 956.50 1054.50 611.00 383.88 a 51.50 24.00 4441.80
1956 9.00 11.50 124.00 296.90 a 581.50 768.33 c 1052.00 885.00 690.52 a 295.00 40.00 6.50 4760.25
1957 0.00 26.00 91.50 229.00 551.50 768.00 1028.00 959.50 712.00 314.50 9.50 19.08 e 4708.58
1958 0.00 72.00 53.00 191.00 745.00 774.50 991.00 1064.50 654.00 426.00 94.00 22.00 5087.00
1959 9.50 3.50 60.50 331.50 395.00 866.50 1069.50 892.50 557.50 328.50 58.50 1.00 4574.00
1960 0.00 1.00 146.50 304.50 486.50 834.50 1149.50 872.00 732.50 311.50 42.00 9.50 4890.00
1961 8.00 40.00 106.00 238.00 575.50 941.00 1093.00 1112.50 495.50 286.00 32.00 3.50 4931.00
1962 3.10 a 16.00 32.50 348.00 424.50 734.50 946.00 881.50 681.50 365.00 112.50 7.00 4552.10
1963 0.00 77.50 88.00 166.50 572.00 628.00 971.50 1010.00 828.00 500.50 84.00 0.00 4926.00
1964 0.00 0.00 16.00 180.50 508.50 650.50 1061.00 904.00 547.00 421.00 64.00 39.00 4391.50
1965 22.50 30.50 52.00 308.50 416.00 727.00 975.50 905.00 463.00 468.00 158.00 10.50 4536.50
1966 2.00 3.50 138.00 270.00 668.00 758.50 1053.00 1005.00 784.50 322.00 116.50 1.00 5122.00
1967 12.50 26.00 107.00 137.00 537.00 709.00 1121.00 1155.00 822.50 371.00 109.00 3.00 5110.00
1968 0.00 54.50 156.50 199.50 536.50 785.50 1117.00 810.00 631.50 339.00 35.50 5.00 4670.50
1969 12.00 0.00 55.50 345.50 659.00 754.00 1056.50 1069.50 775.00 193.50 69.50 7.50 4997.50
1970 22.73 a 57.50 56.00 111.00 510.00 803.50 1063.00 1080.00 531.00 258.50 58.39 b 4.00 4555.63
1971 18.50 21.00 71.00 235.50 555.50 728.50 1039.50 1130.50 546.00 305.50 41.50 0.50 4693.50
1972 2.00 31.50 208.00 214.50 595.50 830.50 1024.00 1046.50 552.50 362.50 45.50 16.00 4929.00
1973 5.50 13.50 45.50 211.00 614.00 810.00 1068.50 1023.50 671.50 398.50 103.50 10.00 4975.00
1974 16.00 7.00 129.00 251.50 502.50 954.50 1065.50 968.00 743.00 412.00 63.50 9.50 5122.00
1975 0.50 2.00 29.50 72.00 378.50 655.50 1127.50 850.00 696.00 310.50 61.00 16.50 4199.50
1976 0.00 4.50 20.50 173.79 a 563.50 663.50 1022.00 831.00 694.82 b 319.50 125.50 2.00 4420.61
1977 0.00 27.50 46.00 366.00 360.00 909.00 982.00 990.00 614.48 a 363.00 38.50 14.50 4710.98
1978 0.00 13.50 212.00 185.50 404.50 718.50 1011.00 872.00 561.50 347.00 49.00 0.00 4374.50
1979 0.00 4.15 a 74.50 209.50 529.00 775.50 1035.00 950.50 757.50 409.00 22.50 1.50 4768.65
1980 1.00 43.00 32.00 338.00 477.50 688.00 1003.50 872.65 a 631.00 338.50 119.00 29.50 4573.65
1981 5.50 34.50 113.00 278.00 459.50 717.41 a 983.50 1085.00 705.50 203.57 a 133.00 20.00 4738.48
1982 0.00 10.50 55.00 160.50 424.50 730.00 909.00 997.00 585.50 221.50 8.50 2.50 4104.50
1983 2.50 25.50 96.50 152.50 464.00 680.00 881.50 1045.00 636.00 343.00 100.00 0.00 4426.50
1984 0.00 0.00 35.50 168.50 437.00 598.50 1019.00 1020.00 569.00 222.00 20.00 0.00 4089.50
1985 0.00 0.00 1.50 337.00 598.50 802.50 1176.00 893.50 447.50 256.50 29.00 0.00 4542.00
1986 7.50 84.50 216.00 205.50 487.00 897.00 924.00 1076.00 506.50 341.50 34.50 0.00 a 4780.00
1987 0.00 21.00 89.00 0.00 z 652.50 856.00 931.00 942.00 731.00 453.50 91.50 21.00 4788.50
1988 0.00 41.00 86.00 330.00 489.50 879.50 1071.00 964.50 576.00 546.50 64.50 0.00 5048.50
1989 0.00 0.50 71.00 327.00 447.50 756.50 1108.00 897.50 667.50 292.00 50.50 1.00 4619.00
1990 7.00 6.50 117.00 402.00 420.00 725.00 1075.00 996.50 856.50 307.00 76.50 3.50 4992.50
1991 0.00 49.50 53.50 172.50 358.50 657.00 1071.57 a 1080.50 715.50 382.00 26.50 2.50 4569.57
1992 3.50 57.00 243.00 389.00 684.00 821.00 910.50 987.00 606.00 432.00 18.00 0.00 5151.00
1993 0.00 1.50 86.50 167.00 631.00 604.50 726.00 816.00 614.00 344.50 8.00 8.00 4007.00
1994 2.50 12.50 144.00 294.00 587.50 769.00 1078.00 1061.00 735.50 261.50 6.50 0.00 4952.00
1995 5.50 68.50 68.00 190.50 410.00 615.00 961.00 954.50 719.50 273.50 134.00 36.50 4436.50
1996 0.00 25.00 118.50 250.00 455.50 800.50 1087.50 991.00 578.00 347.50 76.00 11.50 4741.00
1997 18.50 5.00 141.50 218.50 628.00 757.00 943.50 1030.50 755.50 305.00 54.00 0.00 4857.00
1998 9.00 12.50 107.00 233.00 445.00 601.50 1146.50 1063.50 802.50 285.50 38.00 21.00 4765.00
1999 1.00 2.59 a 96.00 157.50 406.00 713.00 961.52 a 1028.00 607.00 377.00 172.50 10.50 4532.61
2000 2.00 21.00 54.50 339.50 592.50 823.50 1098.00 1095.00 670.00 356.50 3.50 0.00 a 5056.00
2001 0.00 0.00 138.00 233.50 643.50 804.00 1075.50 1135.50 779.50 368.50 173.00 0.00 5351.00
2002 0.00 1.00 71.00 297.50 521.00 846.50 1177.50 909.00 728.50 265.50 58.00 22.00 4897.50
2003 38.50 20.00 142.50 246.00 534.50 828.50 1200.50 1093.50 674.00 588.43 d 34.50 19.50 5420.43
2004 1.00 0.00 221.00 315.00 510.00 760.00 1069.00 974.00 645.50 376.50 48.00 11.50 4931.50
2005 0.00 3.50 130.00 235.50 537.50 675.00 1110.50 1026.50 627.00 377.00 40.50 4.00 4767.00
2006 0.00 7.00 0.00 z 286.00 597.50 894.00 1226.50 990.50 633.00 314.00 107.00 6.50 5062.00
2007 0.00 44.00 205.00 292.00 614.50 844.00 1230.50 1065.50 681.00 271.00 103.50 3.00 5354.00
2008 0.00 0.00 24.00 136.50 503.50 750.50 1124.50 1027.00 662.50 363.00 140.00 8.50 4740.00
2009 2.00 5.00 72.50 232.50 573.00 749.00 1107.50 989.50 833.00 199.00 80.00 0.00 4843.00
2010 0.00 0.50 66.00 198.50 330.50 702.50 723.00 h 958.00 684.00 425.00 110.00 0.00 3475.00
2011 1.03 a 12.00 42.00 102.50 346.50 637.50 1041.50 1069.50 793.00 369.50 23.00 1.50 4439.53
2012 0.00 a 2.50 169.00 378.00 490.00 760.50 1175.00 1094.50 757.00 346.00 159.50 26.00 5358.00
2013 0.00 1.00 135.50 24.00 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 136.50
Period of Record Statistics
MEAN 4.34 16.82 86.66 255.19 520.69 747.88 1051.13 984.06 659.86 346.11 69.83 9.82 4749.30
S.D. 8.07 21.59 55.77 85.83 100.32 95.19 83.16 78.66 90.15 82.67 46.51 14.63 321.78
SKEW 3.32 1.71 0.70 0.41 0.20 -0.01 -0.61 -0.17 -0.16 0.15 0.60 2.71 -0.01
MAX 52.00 100.50 243.00 494.50 789.00 954.50 1230.50 1155.00 856.50 588.43 192.00 80.00 5420.43
MIN 0.00 0.00 1.50 72.00 321.88 462.86 726.00 808.14 442.00 136.50 0.00 0.00 4007.00
NO YRS 98 96 95 93 95 96 91 95 94 96 95 98 78