RIVERDALE, UTAH

Monthly Total Growing Degree Days

(427318)

Base Temperature = 50 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 199102
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 0.00 0.00 0.00 73.00 367.87 a 380.00 712.50 611.22 a 395.00 84.00 0.00 0.00 2623.58
1929 0.00 0.00 0.00 35.00 197.00 375.00 762.50 758.00 219.50 116.00 0.00 3.00 2466.00
1930 0.00 0.00 1.50 192.00 192.50 495.00 809.00 684.00 342.00 14.50 0.00 0.00 2730.50
1931 0.00 0.00 3.00 45.00 212.00 560.50 784.50 678.50 338.00 108.00 9.50 0.00 2739.00
1932 0.00 a 0.00 0.00 50.50 197.00 413.00 668.50 630.50 369.00 81.00 6.00 0.00 2415.50
1933 0.00 0.00 4.00 40.50 131.50 609.50 820.50 623.00 396.00 184.50 0.00 0.00 2809.50
1934 0.00 0.00 41.00 183.00 434.50 468.50 742.50 706.50 329.50 143.00 8.00 0.00 3056.50
1935 0.00 0.00 3.00 56.50 124.50 480.50 738.50 695.00 0.00 z 141.50 0.00 0.00 2239.50
1936 0.00 0.00 0.00 172.50 336.50 579.50 830.00 714.00 353.00 107.50 0.00 0.00 3093.00
1937 0.00 0.00 0.00 53.00 326.00 458.00 792.00 749.00 503.00 154.00 0.00 0.00 3035.00
1938 0.00 0.00 0.00 106.00 216.50 551.00 690.50 701.00 531.50 147.50 0.00 0.00 2944.00
1939 0.00 0.00 20.00 124.00 345.50 436.50 756.50 677.00 389.50 63.50 1.00 2.50 2816.00
1940 0.00 1.50 35.00 97.50 415.00 623.50 801.50 765.50 362.00 144.50 0.00 0.00 3246.00
1941 0.00 0.00 13.00 55.50 326.00 0.00 z 736.25 a 678.00 259.50 68.50 2.00 0.00 2138.75
1942 0.00 a 0.00 1.00 91.00 130.00 279.50 i 765.70 a 656.34 b 349.00 116.50 g 10.50 0.00 2003.54
1943 0.00 0.00 a 17.50 170.50 202.05 c 396.00 716.00 691.50 454.14 a 179.00 0.00 0.00 2826.69
1944 0.00 0.00 0.00 a 0.00 z 0.00 z 373.00 740.50 694.50 383.50 190.50 2.50 0.00 2384.50
1945 0.00 0.00 7.00 64.50 257.30 a 302.00 762.00 748.50 302.50 191.00 7.00 0.00 2641.80
1946 0.00 0.00 25.32 a 179.00 230.50 530.00 790.00 737.00 380.00 35.00 0.00 2.00 2908.82
1947 0.00 0.00 12.00 58.00 365.50 384.50 797.50 676.00 411.00 192.50 4.00 0.00 2901.00
1948 0.00 0.00 7.00 94.50 275.50 511.00 719.00 716.50 427.00 138.50 2.00 0.00 2891.00
1949 0.00 0.00 7.00 152.00 298.00 451.50 743.50 734.00 465.00 61.00 2.00 0.00 2914.00
1950 0.00 4.00 7.00 55.00 184.00 499.80 e 681.00 682.00 381.50 220.00 1.00 0.00 2715.30
1951 0.00 1.00 1.00 68.50 250.50 354.00 731.50 664.50 391.50 81.50 0.00 b 0.00 2544.00
1952 0.00 0.00 0.00 122.00 296.50 524.50 725.00 732.50 511.50 218.50 0.00 0.00 3130.50
1953 0.00 2.00 21.50 64.50 110.50 459.50 794.50 720.00 490.00 157.00 36.00 0.00 2855.50
1954 0.00 0.00 6.50 133.50 362.50 457.50 855.00 680.50 455.50 140.50 18.00 0.00 b 3109.50
1955 0.00 0.00 0.00 44.00 264.00 472.00 782.00 821.50 447.50 159.00 0.00 1.03 a 2991.03
1956 0.00 0.00 40.50 111.00 339.50 575.00 814.50 682.50 513.50 176.50 0.00 0.00 3253.00
1957 0.00 2.50 8.00 40.00 232.00 508.00 772.00 793.00 434.00 107.50 0.00 0.00 2897.00
1958 0.00 10.00 0.00 51.00 453.00 580.00 728.50 842.50 461.50 230.50 19.50 0.00 3376.50
1959 0.00 0.00 3.00 126.00 181.50 626.00 807.50 689.00 353.50 121.00 0.00 0.00 2907.50
1960 0.00 0.00 40.50 110.50 264.50 599.00 914.50 675.50 531.72 a 162.50 5.00 0.00 3303.72
1961 0.00 0.00 6.50 67.00 308.00 694.50 841.50 777.50 276.50 109.50 0.00 0.00 3081.00
1962 0.00 0.00 3.00 146.00 211.50 496.00 730.50 682.00 477.00 193.50 12.00 0.00 2951.50
1963 0.00 5.00 14.00 37.00 351.33 a 393.50 787.50 784.00 512.00 282.00 2.00 0.00 3168.33
1964 0.00 0.00 3.50 0.00 z 269.50 381.00 826.50 653.00 371.50 172.00 2.50 1.00 2680.50
1965 0.00 0.00 0.00 z 109.00 214.50 446.50 741.00 635.50 265.00 195.00 30.00 0.00 2636.50
1966 0.00 0.00 24.50 73.97 a 419.00 557.50 913.00 749.50 523.00 109.00 13.00 0.00 3382.47
1967 0.00 0.00 27.50 21.00 284.50 420.00 854.50 846.00 491.50 154.00 31.00 0.00 3130.00
1968 0.00 0.00 25.00 43.50 228.00 528.62 a 836.00 587.00 357.50 113.50 5.00 0.00 2724.12
1969 0.00 0.00 19.63 a 99.50 446.50 445.50 814.00 847.00 554.00 51.50 7.50 0.00 3285.13
1970 0.00 0.00 0.00 22.50 284.00 534.50 781.00 808.00 293.50 70.00 1.50 0.00 2795.00
1971 0.00 0.00 12.50 58.50 239.00 509.50 798.00 795.00 301.00 89.00 4.50 0.00 2807.00
1972 0.00 2.00 57.50 54.50 328.00 588.50 774.50 753.30 a 286.00 g 123.00 f 0.00 i 0.00 d 2558.30
1973 0.00 0.00 0.00 35.40 e 319.00 538.00 813.75 e 581.00 g 347.50 167.83 b 13.50 f 0.00 b 2221.48
1974 0.00 0.00 17.22 d 77.78 c 289.69 b 652.50 b 852.00 724.00 469.29 b 186.00 c 0.00 b 0.00 f 3268.48
1975 0.00 0.00 4.50 12.86 b 132.00 f 361.20 e 518.00 l 388.00 m 285.00 k 86.00 k 0.00 m 0.00 p 378.56
1976 0.00 n 0.00 m 1.00 j 12.50 p 171.00 q 394.62 d 796.50 585.00 431.11 c 63.07 b 2.14 b 0.00 2272.44
1977 0.00 b 0.00 b 1.00 167.00 122.50 639.31 a 736.50 675.50 376.03 a 136.40 a 8.00 0.00 2862.24
1978 0.00 0.00 41.33 a 27.50 159.98 c 447.00 e 740.26 b 625.00 335.56 c 132.94 e 8.04 b 0.00 e 2517.61
1979 0.00 b 0.00 e 0.00 b 58.50 241.69 d 459.00 e 753.41 c 540.00 f 527.59 a 153.50 f 0.00 c 0.00 g 2040.18
1980 0.00 c 1.12 c 4.77 e 130.18 b 166.00 406.67 c 763.93 c 609.87 e 357.32 b 137.00 17.59 a 0.00 d 2594.43
1981 0.00 b 0.00 c 0.00 b 120.54 b 192.72 a 490.71 b 787.92 a 784.19 d 488.33 c 50.63 a 8.33 c 0.00 h 2923.37
1982 0.00 z 2.00 0.50 49.50 198.50 451.50 688.50 789.50 374.00 49.00 0.00 0.00 2603.00
1983 0.00 0.00 6.72 a 21.00 196.50 438.50 709.00 749.00 422.00 110.50 0.00 s 0.00 f 2653.22
1984 0.00 0.00 0.00 42.50 270.50 403.00 729.50 700.50 387.00 92.00 0.00 0.00 2625.00
1985 0.00 0.00 3.00 154.00 331.00 523.00 804.50 609.50 264.50 76.50 7.00 0.00 2773.00
1986 0.00 9.00 65.50 52.50 248.50 633.50 655.00 773.50 280.00 70.00 0.00 0.00 2787.50
1987 0.00 0.00 19.50 187.50 346.00 525.50 648.00 642.00 399.00 157.00 13.50 0.00 2938.00
1988 0.00 0.00 5.50 94.00 258.00 606.50 804.00 713.50 365.00 279.50 20.50 0.00 3146.50
1989 0.00 0.00 38.00 151.00 252.00 490.50 869.00 695.50 448.50 155.50 5.00 0.00 3105.00
1990 0.00 0.00 20.50 148.00 186.50 529.50 788.00 728.50 594.50 111.00 7.50 0.00 3114.00
1991 0.00 0.00 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
Period of Record Statistics
MEAN 0.00 0.64 12.25 88.03 264.71 492.13 772.96 710.53 403.68 132.78 5.77 0.16 2915.19
S.D. 0.00 1.88 15.42 50.04 84.19 86.70 56.68 64.44 84.20 57.72 8.28 0.59 239.80
SKEW 0.00 3.74 1.54 0.54 0.31 0.17 0.12 0.19 0.06 0.32 1.94 3.71 0.00
MAX 0.00 10.00 65.50 192.00 453.00 694.50 914.50 847.00 594.50 282.00 36.00 3.00 3382.47
MIN 0.00 0.00 0.00 12.86 110.50 302.00 648.00 585.00 219.50 14.50 0.00 0.00 2415.50
NO YRS 62 63 61 60 60 61 62 60 60 59 59 58 48