ZION NATIONAL PARK, UTAH

Monthly Total Heating Degree Days

(429717)

Base Temperature = 65 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 674.25 a 615.00 368.00 313.00 52.00 6.00 0.00 0.00 2.00 111.00 420.00 826.00 3387.25
1929 871.50 757.00 478.50 326.50 49.50 6.50 0.00 0.00 2.50 155.50 578.00 611.00 3836.50
1930 931.50 479.50 499.00 119.50 209.50 0.00 0.00 0.00 9.50 199.00 533.00 877.00 3857.50
1931 760.50 523.00 476.00 139.50 46.50 0.00 0.00 0.00 5.00 123.00 614.50 893.50 3581.50
1932 1020.50 654.00 479.00 228.00 86.50 35.00 0.00 0.00 0.00 194.00 365.50 951.50 4014.00
1933 943.50 865.00 449.00 317.50 222.34 b 0.50 0.00 0.00 0.00 6.00 302.00 597.50 3703.34
1934 648.00 409.00 155.00 82.50 13.00 12.00 0.00 0.00 18.00 76.50 351.50 645.50 2411.00
1935 675.50 491.00 539.00 208.50 121.00 0.00 0.00 0.00 1.00 146.00 486.00 641.00 3309.00
1936 693.50 646.50 424.00 180.50 24.00 4.00 3.00 0.00 15.00 168.00 412.00 761.00 3331.50
1937 1248.00 655.50 486.00 271.00 14.00 0.00 0.00 0.00 0.00 69.50 343.00 638.00 3725.00
1938 691.50 605.50 545.50 223.50 124.00 0.00 0.00 0.00 0.00 100.00 630.00 693.00 3613.00
1939 777.50 859.50 410.50 135.50 28.42 a 0.00 0.00 0.00 0.00 121.50 285.00 547.50 3165.42
1940 687.00 622.00 334.00 197.50 1.00 0.00 0.00 0.00 0.50 98.50 547.50 671.00 3159.00
1941 693.00 472.00 476.00 422.50 56.00 18.00 0.00 0.00 z 4.50 i 253.00 419.50 686.00 3496.00
1942 747.00 711.41 a 503.00 201.00 111.50 0.00 b 86.00 0.00 2.50 139.00 405.00 652.50 3558.91
1943 752.50 499.85 a 438.00 142.50 56.00 8.00 0.00 0.00 4.00 117.28 a 357.50 700.50 3076.14
1944 838.11 c 508.00 h 496.00 300.00 a 48.00 17.50 0.00 33.00 0.00 23.00 496.00 657.72 a 2909.32
1945 644.00 545.00 589.50 305.00 36.00 6.50 0.00 0.00 a 9.50 78.50 453.50 839.50 3507.00
1946 769.50 547.50 367.00 115.50 32.50 0.00 a 0.00 0.00 0.00 255.00 577.50 635.00 3299.50
1947 838.50 391.50 319.50 193.00 23.50 3.00 0.00 0.00 0.00 120.50 630.50 869.50 3389.50
1948 721.50 715.50 678.50 233.50 55.50 0.00 0.00 0.00 0.00 96.62 a 611.00 849.00 3961.12
1949 1159.50 836.00 533.00 159.00 62.00 20.50 0.00 0.00 0.00 206.00 199.50 785.00 3960.50
1950 833.50 473.00 382.00 101.00 83.00 2.50 0.00 0.00 0.00 10.00 284.48 a 469.50 2638.98
1951 765.50 515.50 474.00 180.50 74.50 7.00 0.00 0.00 0.00 148.00 509.00 864.00 3538.00
1952 832.00 632.50 699.00 177.50 26.50 0.00 0.00 d 0.00 a 4.50 0.00 589.00 805.50 3766.50
1953 573.50 529.00 356.00 231.00 147.00 1.50 0.00 0.00 0.00 129.50 330.00 808.50 3106.00
1954 646.50 373.50 530.50 75.00 30.00 7.50 0.00 0.00 0.00 86.00 304.00 700.50 2753.50
1955 911.00 731.00 472.50 240.50 68.50 16.50 0.00 0.00 1.00 58.00 451.00 562.00 3512.00
1956 590.50 705.50 362.00 210.50 34.50 0.00 0.00 0.00 0.00 96.50 484.50 678.00 3162.00
1957 776.50 388.50 402.50 261.50 140.50 0.50 0.00 0.00 0.00 181.50 636.50 649.50 3437.50
1958 718.00 464.00 627.00 306.50 28.50 0.00 0.00 0.00 11.50 96.50 425.00 533.00 3210.00
1959 687.50 647.00 428.00 119.00 43.00 0.00 0.00 0.00 a 22.00 87.00 413.00 658.50 3105.00
1960 889.50 725.00 356.50 190.50 46.00 0.00 0.00 0.00 0.00 136.50 399.00 770.50 3513.50
1961 644.50 547.50 488.50 214.00 58.00 0.50 0.00 0.00 21.00 172.00 576.50 845.50 3568.00
1962 826.50 572.00 610.50 105.50 104.50 14.50 0.00 0.00 0.00 69.00 291.50 644.00 3238.00
1963 909.50 402.00 535.00 335.00 9.50 1.00 0.00 0.00 0.00 70.50 419.00 766.50 3448.00
1964 878.50 764.00 643.50 325.50 157.50 10.50 0.00 0.00 2.50 60.00 553.00 742.50 4137.50
1965 665.50 587.00 576.50 355.50 159.50 10.50 0.00 0.00 77.00 59.00 370.00 690.50 3551.00
1966 815.50 724.00 356.00 169.50 39.00 0.00 0.00 0.00 0.00 114.50 382.50 753.50 3354.50
1967 790.50 569.50 410.50 424.00 125.50 10.00 0.00 0.00 0.00 67.50 330.00 949.00 3676.50
1968 756.00 438.50 399.50 320.00 78.50 22.50 0.00 0.00 25.00 66.50 497.00 842.50 3446.00
1969 670.50 655.50 546.50 190.50 26.00 0.00 0.00 0.00 0.00 245.50 411.00 639.00 3384.50
1970 735.00 406.00 535.50 361.50 32.50 7.00 0.00 0.00 8.00 193.50 398.50 731.00 3408.50
1971 740.50 595.50 428.50 225.00 128.00 4.00 0.00 0.00 17.50 287.00 517.00 869.50 3812.50
1972 788.00 472.50 220.00 172.50 26.00 0.00 0.00 0.00 0.00 212.50 632.50 867.50 3391.50
1973 983.50 588.00 653.50 318.00 45.00 18.00 0.00 0.00 3.00 131.75 a 491.00 665.00 3896.75
1974 854.50 587.00 354.00 252.50 25.00 0.00 0.00 0.00 0.50 107.50 468.00 868.00 a 3517.00
1975 854.50 649.50 597.50 466.03 a 121.42 a 0.00 0.00 0.00 0.00 144.00 345.50 q 681.50 3514.45
1976 697.50 473.00 543.50 257.07 a 11.00 2.50 0.00 0.00 0.00 152.50 362.50 686.00 3185.57
1977 770.00 466.00 576.50 150.00 148.50 0.00 0.00 0.00 2.00 38.50 410.50 586.50 3148.50
1978 705.00 565.50 359.00 273.50 102.50 0.00 0.00 0.00 33.50 65.44 d 525.00 905.00 3534.44
1979 1000.00 707.00 514.00 232.00 80.50 3.50 0.00 0.00 0.00 84.50 579.00 632.50 3833.00
1980 714.50 497.50 579.70 a 238.00 128.13 a 0.50 0.00 a 0.00 0.00 a 185.50 406.00 491.50 3241.33
1981 581.00 460.00 491.50 136.50 64.00 5.00 0.00 0.00 0.00 190.13 a 298.50 598.50 2825.13
1982 866.50 558.00 500.50 272.00 58.50 0.00 0.00 0.00 40.00 224.50 536.00 781.00 3837.00
1983 688.50 548.50 526.50 396.50 150.50 0.00 0.00 0.00 6.50 60.00 483.50 720.50 3581.00
1984 761.50 625.50 456.50 294.00 29.50 2.50 0.00 0.00 6.00 350.50 517.00 739.00 3782.00
1985 788.50 656.50 505.50 139.00 30.50 0.00 0.00 0.00 12.50 108.50 583.00 688.00 3512.00
1986 475.50 503.50 286.50 208.00 62.00 1.00 0.00 0.00 79.50 145.00 460.00 658.00 2879.00
1987 817.50 579.50 507.00 122.50 34.00 0.00 0.00 0.00 0.00 60.50 473.00 841.00 3435.00
1988 764.00 484.50 446.50 227.00 111.50 0.00 0.00 0.00 13.00 0.00 461.00 727.00 3234.50
1989 820.00 603.50 254.50 78.00 48.00 0.00 0.00 0.00 2.50 113.50 365.50 697.50 2983.00
1990 713.00 616.00 342.50 127.00 47.00 0.00 0.00 0.00 0.00 63.50 411.00 936.00 3256.00
1991 785.50 350.50 594.00 280.50 103.50 13.00 0.00 0.00 0.00 142.50 467.50 701.00 3438.00
1992 746.00 444.50 387.50 73.97 a 8.00 3.00 0.00 0.00 0.00 60.50 632.50 883.50 3239.47
1993 776.50 624.00 363.00 210.00 53.00 25.50 0.00 0.00 4.50 163.50 601.50 756.00 3577.50
1994 695.50 672.00 348.00 284.00 45.00 0.00 0.00 0.00 0.00 152.50 654.00 669.00 3520.00
1995 721.50 311.50 436.00 305.00 101.50 34.00 0.00 0.00 3.50 82.50 300.50 656.00 2952.00
1996 721.00 458.00 416.50 179.00 40.00 0.00 0.00 0.00 23.00 237.00 455.50 778.50 3308.50
1997 784.50 595.00 245.00 263.50 22.00 11.00 0.00 0.00 0.00 148.00 385.00 840.00 3294.00
1998 642.50 644.50 428.32 a 351.50 67.50 5.50 0.00 0.00 1.00 146.00 474.00 706.00 3466.82
1999 632.50 485.50 278.00 374.50 94.00 27.00 0.00 0.00 4.14 a 48.50 226.50 691.00 2861.64
2000 585.50 499.50 399.00 71.00 23.25 a 0.00 0.00 0.00 3.00 193.00 619.50 645.00 3038.75
2001 736.77 a 596.00 341.53 b 246.21 a 41.00 4.50 0.00 0.00 0.00 56.00 359.50 842.54 c 3224.04
2002 788.50 537.00 477.50 79.00 47.00 0.00 0.00 0.00 4.50 144.50 463.00 735.00 3276.00
2003 473.50 619.50 448.00 285.00 78.00 0.00 0.00 0.00 0.00 18.50 513.00 661.50 3097.00
2004 694.00 705.00 199.50 165.00 7.50 0.00 0.00 0.00 12.00 179.50 478.00 681.00 3121.50
2005 604.50 520.50 467.00 229.00 68.00 0.00 0.00 0.00 0.00 80.00 390.50 689.50 3049.00
2006 662.00 523.50 527.50 167.00 10.85 a 0.00 a 0.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1890.85
Period of Record Statistics
MEAN 761.22 571.48 452.36 226.06 66.42 5.19 1.14 0.43 6.68 122.86 455.49 727.01 3388.69
S.D. 128.62 116.91 111.18 91.25 47.87 8.20 9.74 3.76 14.32 69.48 108.22 107.66 331.08
SKEW 0.95 0.26 -0.24 0.31 1.09 1.91 8.65 8.60 3.60 0.62 -0.05 0.11 -0.23
MAX 1248.00 865.00 699.00 466.03 222.34 35.00 86.00 33.00 79.50 350.50 654.00 951.50 4137.50
MIN 473.50 311.50 155.00 71.00 1.00 0.00 0.00 0.00 0.00 0.00 199.50 469.50 2411.00
NO YRS 79 78 79 79 79 79 78 77 77 78 77 78 75