ZION NATIONAL PARK, UTAH

Monthly Total Growing Degree Days

(429717)

Base Temperature = 50 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1928 8.78 a 6.50 130.00 190.00 592.50 763.50 1049.50 979.50 767.00 427.00 97.50 0.50 5012.28
1929 0.00 0.50 83.50 172.00 550.50 782.00 1031.00 958.00 643.50 443.50 29.50 28.50 4722.50
1930 0.00 57.50 49.00 387.50 355.00 830.50 1005.50 903.00 698.50 289.50 88.50 0.00 4664.50
1931 2.50 5.00 83.50 320.50 542.00 824.50 1162.00 1014.50 718.00 402.50 127.50 0.00 5202.50
1932 0.00 27.00 66.50 252.00 439.50 759.00 954.00 1006.50 777.00 332.50 105.00 3.50 4722.50
1933 0.00 1.50 89.00 172.00 328.71 b 858.50 1097.50 999.00 827.00 568.00 182.50 11.00 5134.71
1934 1.50 60.00 312.50 465.00 735.00 731.00 1069.50 1022.50 762.50 507.50 225.50 7.50 5900.00
1935 22.00 61.00 72.50 259.50 404.00 866.00 993.00 970.00 781.00 417.00 42.00 3.50 4891.50
1936 3.50 0.50 111.50 356.00 670.50 953.00 1032.00 993.00 700.50 355.50 103.50 5.00 5284.50
1937 0.00 3.00 62.00 214.50 681.00 819.50 1075.50 1097.50 836.00 470.50 133.00 7.50 5400.00
1938 6.00 3.00 29.00 285.50 496.00 873.50 1045.50 1031.00 856.50 425.50 11.50 8.00 5071.00
1939 0.00 0.00 144.00 343.50 605.02 a 882.50 1153.00 1132.00 715.50 365.50 181.50 80.50 5603.02
1940 16.50 16.00 181.50 284.00 732.50 987.00 1098.50 1082.00 713.00 482.00 59.50 39.50 5692.00
1941 6.00 21.50 62.50 88.50 538.50 806.50 1094.50 0.00 z 529.00 i 248.50 117.00 20.50 3004.00
1942 8.50 3.63 a 65.50 261.50 458.50 823.93 b 981.50 939.50 771.50 419.50 114.50 10.50 4858.56
1943 1.50 43.04 a 98.50 383.00 563.50 717.00 1033.50 928.50 788.00 470.17 a 128.50 0.00 5155.20
1944 0.55 c 0.00 h 62.00 165.00 a 537.00 695.00 1038.00 1033.50 846.00 544.50 77.50 0.00 a 4999.05
1945 9.00 17.00 41.00 236.50 553.00 709.00 1065.50 964.62 a 762.50 447.50 70.50 0.00 4876.12
1946 0.00 38.50 137.50 426.50 568.00 924.83 a 1101.00 1030.00 823.00 223.50 11.50 16.00 5300.33
1947 0.00 41.50 168.50 275.50 696.50 770.00 1046.50 919.50 856.00 437.00 29.50 0.00 5240.50
1948 10.00 8.00 7.50 245.00 556.00 754.50 983.00 957.00 830.00 475.33 a 36.00 0.00 4862.33
1949 0.00 0.00 42.00 367.00 510.00 751.00 1086.00 1005.50 828.50 361.50 260.00 22.00 5233.50
1950 6.50 66.00 127.00 382.00 544.50 824.00 1061.00 999.50 730.50 610.00 199.14 a 56.50 5606.64
1951 16.00 49.00 92.50 299.50 521.00 806.00 1087.50 918.50 802.50 364.50 54.00 0.00 5011.00
1952 0.00 3.00 35.00 281.50 581.50 735.50 1009.80 d 1010.08 a 776.50 619.00 89.50 0.50 5141.88
1953 21.00 40.50 169.00 282.00 376.00 813.00 1109.00 981.50 879.50 448.50 188.00 0.00 5308.00
1954 20.00 93.50 57.50 432.50 677.50 803.50 1096.50 948.50 758.50 493.50 166.50 7.00 5555.00
1955 0.00 7.50 62.50 242.00 522.50 779.00 1006.00 1032.00 799.00 529.50 87.50 42.00 5109.50
1956 30.00 6.50 175.50 270.00 598.50 923.00 1021.50 956.00 881.00 464.50 87.50 7.00 5421.00
1957 1.50 104.00 101.00 207.50 387.00 869.50 1044.00 954.50 769.50 322.50 11.00 0.00 4772.00
1958 0.50 63.00 13.00 198.00 656.00 868.00 1006.50 1096.50 733.00 506.50 113.50 31.00 5285.50
1959 10.50 1.50 86.00 374.00 531.50 942.00 1155.50 971.33 a 691.00 472.00 74.50 14.00 5323.83
1960 0.00 0.50 181.00 303.50 562.50 938.00 1171.00 1056.50 864.50 390.50 100.50 3.00 5571.50
1961 3.50 22.50 83.00 264.50 569.00 974.50 1111.00 960.00 590.00 388.50 24.00 0.00 4990.50
1962 0.50 28.50 55.00 405.50 461.50 778.50 1001.50 1038.00 787.50 455.00 214.00 10.50 5236.00
1963 0.00 103.00 76.50 176.50 658.00 704.00 1068.00 915.00 792.00 515.00 102.50 0.00 5110.50
1964 0.00 0.00 45.00 187.00 448.00 735.00 1076.50 946.00 698.00 561.50 73.50 7.00 4777.50
1965 14.50 39.00 34.00 201.50 389.00 636.00 974.00 952.50 551.50 525.50 139.00 26.50 4483.00
1966 0.00 0.00 178.50 320.00 627.50 827.00 1019.50 1044.00 767.00 404.00 144.50 11.50 5343.50
1967 0.00 22.50 121.50 91.50 492.00 675.50 1062.50 1070.50 759.00 496.50 179.00 0.00 4970.50
1968 0.00 62.50 139.00 157.50 508.50 835.00 994.00 835.00 683.50 443.50 69.00 5.00 4732.50
1969 3.50 0.00 88.00 284.50 642.00 739.00 1055.50 1130.50 827.00 259.50 92.50 43.50 5165.50
1970 13.00 76.00 43.00 140.00 606.50 839.00 1059.50 1053.00 677.50 331.50 95.00 4.50 4938.50
1971 46.00 40.00 145.00 264.50 398.00 823.50 1119.50 998.00 700.00 334.00 73.50 0.00 4942.00
1972 0.00 80.50 293.50 300.00 596.00 825.50 1133.50 969.00 669.50 324.00 17.50 0.00 5209.00
1973 0.00 5.50 2.50 182.50 591.50 779.50 1058.50 994.50 717.00 424.70 a 113.50 8.50 4878.20
1974 0.00 12.00 161.00 228.50 657.50 977.00 1024.00 1002.00 818.50 481.50 53.00 0.00 a 5415.00
1975 2.00 12.00 51.50 81.72 a 442.27 a 780.50 1018.00 956.50 773.50 405.00 0.00 q 21.00 4543.99
1976 23.00 39.00 72.00 232.24 a 625.00 792.50 1039.00 921.00 724.00 340.50 189.00 0.00 4997.24
1977 1.00 62.50 44.50 391.50 374.00 892.50 1032.00 1011.00 735.00 523.50 111.00 25.50 5204.00
1978 1.50 14.50 163.50 203.50 467.50 838.00 1076.00 988.00 675.50 527.00 d 83.50 0.00 5038.50
1979 0.00 4.50 49.50 270.50 519.00 833.00 1063.00 916.00 892.00 548.50 32.00 29.00 5157.00
1980 0.00 26.00 19.12 a 273.50 398.35 a 787.50 1034.37 a 949.00 762.41 a 435.50 165.00 74.00 4924.75
1981 27.50 71.00 48.00 371.00 505.50 919.50 1081.00 1013.00 770.00 306.38 a 199.50 48.00 5360.38
1982 2.50 57.00 55.50 212.50 541.50 771.00 975.00 967.50 678.50 250.50 21.50 0.00 4533.00
1983 9.00 22.00 58.00 121.00 451.50 763.00 976.50 924.00 761.00 425.00 129.50 0.00 4640.50
1984 6.50 11.50 78.00 208.50 707.00 794.00 1014.00 909.00 736.50 203.50 63.50 1.00 4733.00
1985 0.00 22.50 56.50 352.00 561.50 893.00 1101.50 1012.50 601.50 407.00 53.50 2.50 5064.00
1986 67.00 86.50 241.50 265.00 604.50 937.00 985.00 1040.00 563.50 334.00 72.50 5.00 5201.50
1987 3.50 24.50 70.50 374.00 569.50 917.50 971.00 951.00 778.50 549.50 72.00 2.00 5283.50
1988 9.00 66.50 111.00 249.00 514.50 883.50 1133.50 964.00 688.50 640.00 132.00 25.00 5416.50
1989 0.00 56.00 247.00 466.50 580.50 856.00 1157.00 925.50 757.50 425.00 137.00 1.00 5609.00
1990 14.50 43.50 191.50 345.50 533.50 928.00 1076.50 970.50 820.50 484.00 139.50 1.50 5549.00
1991 0.00 87.50 20.50 208.00 425.50 747.50 1084.50 1035.00 797.50 571.00 100.00 0.00 5077.00
1992 3.50 48.50 104.00 442.76 a 622.50 808.50 965.00 1008.00 791.00 514.50 22.00 0.00 5330.26
1993 0.00 0.00 146.00 261.00 581.50 717.00 954.00 945.50 742.00 361.50 20.00 6.50 4735.00
1994 13.50 7.50 138.00 249.00 533.00 949.00 1073.50 1063.00 797.00 342.50 34.00 2.00 5202.00
1995 0.00 132.50 110.00 190.00 406.00 665.50 1019.00 1023.00 787.50 443.50 183.00 20.50 4980.50
1996 9.00 94.50 109.00 307.00 572.50 896.50 1090.50 1056.00 652.00 369.00 88.50 8.50 5253.00
1997 2.50 19.00 269.50 236.50 711.50 821.50 1022.00 1012.00 735.50 385.00 106.00 0.50 5321.50
1998 14.50 0.50 118.32 a 183.00 453.50 686.50 1069.00 1080.00 727.50 351.50 64.00 8.00 4756.32
1999 9.00 33.00 200.00 161.00 497.00 798.50 1005.00 993.50 774.31 a 567.50 286.00 7.00 5331.81
2000 55.00 35.50 123.00 447.00 704.73 a 932.00 1071.50 1074.00 780.00 399.50 15.00 10.00 5647.23
2001 3.62 a 13.00 174.24 b 275.17 a 709.50 897.50 1023.00 1075.50 860.50 524.00 199.00 2.21 c 5757.24
2002 10.00 24.00 117.50 430.50 594.00 938.00 1168.00 1047.50 725.50 352.00 46.50 1.50 5455.00
2003 42.00 13.50 112.00 201.50 633.50 937.50 1179.00 1099.50 857.00 669.50 27.50 15.50 5788.00
2004 1.00 6.00 327.50 304.50 657.00 941.00 1107.00 1008.50 769.50 356.00 67.00 16.00 5561.00
2005 42.50 0.00 72.50 231.50 580.50 758.50 1138.00 932.00 758.00 449.00 125.00 27.50 5115.00
2006 3.00 28.50 60.00 296.00 718.68 a 955.86 a 725.50 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2062.05
Period of Record Statistics
MEAN 8.35 32.11 106.64 271.76 550.80 827.47 1056.72 995.73 757.12 432.57 101.02 11.58 5161.98
S.D. 13.33 31.32 70.24 91.26 99.29 84.12 55.82 58.17 71.28 97.93 62.55 16.76 312.79
SKEW 2.41 1.00 1.15 0.24 -0.16 -0.02 0.25 0.13 -0.59 0.00 0.67 2.15 0.07
MAX 67.00 132.50 327.50 466.50 735.00 987.00 1179.00 1132.00 892.00 669.50 286.00 80.50 5900.00
MIN 0.00 0.00 2.50 81.72 328.71 636.00 954.00 835.00 551.50 203.50 11.00 0.00 4483.00
NO YRS 79 78 79 79 79 79 78 77 77 78 77 78 75