PETRIFIED FOREST NP, ARIZONA

Monthly Total Growing Degree Days

(026468)

Base Temperature = 50 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1931 0.00 0.00 5.34 b 139.00 340.47 b 602.00 793.50 698.00 554.50 221.50 16.50 0.00 3370.81
1932 0.00 0.00 19.00 131.00 352.50 568.00 817.00 788.00 529.00 167.00 1.03 a 0.00 3372.53
1933 0.00 0.00 14.50 52.50 246.50 735.50 872.00 799.00 638.50 265.00 11.00 0.00 3634.50
1934 0.00 5.50 133.50 242.50 486.00 577.50 862.50 773.00 508.00 261.00 46.50 0.00 3896.00
1935 0.00 0.00 4.00 65.00 199.00 611.50 762.50 740.50 465.50 205.00 0.00 0.00 3053.00
1936 0.00 0.00 2.00 186.50 385.00 672.00 814.50 797.00 482.00 213.50 1.00 0.00 3553.50
1937 0.00 0.00 1.00 92.00 347.00 540.00 775.00 861.50 651.00 260.00 33.00 0.00 3560.50
1938 0.00 4.00 20.00 164.00 296.50 635.50 797.00 327.50 s 365.50 k 237.50 4.50 0.00 a 2159.00
1939 0.00 b 0.00 a 123.50 192.00 418.00 663.50 886.50 813.75 a 588.50 187.50 41.50 0.50 3915.25
1940 0.00 2.50 36.50 106.00 413.85 a 682.00 802.50 752.50 513.62 a 244.50 14.48 a 0.00 3568.45
1941 0.00 1.50 14.00 48.62 a 339.50 513.50 752.50 710.50 479.50 151.50 16.50 0.00 3027.62
1942 0.00 0.00 0.50 105.50 278.50 582.50 834.00 712.50 488.50 201.00 34.50 0.00 3237.50
1943 1.50 2.50 47.00 264.00 412.30 a 611.00 829.00 775.00 553.50 257.50 6.50 0.00 3759.80
1944 0.00 0.00 10.00 44.50 331.00 545.00 781.50 795.00 548.79 a 294.00 36.00 0.00 3385.79
1945 0.00 1.50 2.00 118.50 346.00 506.50 820.50 816.50 559.50 283.50 9.00 0.00 3463.50
1946 0.00 0.00 55.00 255.50 345.50 695.00 812.50 756.00 565.00 141.50 6.00 3.00 3635.00
1947 0.00 8.50 23.50 106.50 429.00 576.50 843.00 727.50 611.00 242.00 16.50 0.00 3584.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 809.00 777.50 620.00 228.50 8.00 0.00 2443.00
1949 0.00 0.00 14.50 193.00 346.50 610.50 790.00 725.00 613.45 a 157.21 c 9.83 a 2.50 3462.49
1950 1.50 5.19 a 16.50 187.00 316.00 615.00 762.94 d 736.00 485.00 443.00 34.50 2.00 3604.63
1951 0.00 4.00 14.50 122.00 456.39 d 555.52 a 881.50 758.50 599.48 a 217.00 2.50 0.50 3611.89
1952 0.00 0.50 6.50 118.50 398.00 637.00 799.00 809.50 585.00 312.58 a 20.00 0.00 3686.58
1953 0.00 0.00 46.50 a 119.50 235.50 669.00 852.00 749.00 526.50 f 213.68 c 41.00 0.00 2926.18
1954 0.00 f 1.50 20.00 232.50 435.50 624.31 a 845.00 720.00 582.00 308.50 22.00 9.00 3800.31
1955 0.00 0.50 12.50 101.50 328.60 a 559.50 775.50 767.50 599.00 300.38 b 13.50 4.50 3462.98
1956 0.00 0.50 42.00 99.50 429.00 723.10 a 779.50 694.00 630.50 281.00 0.50 0.00 3679.60
1957 0.00 23.50 17.50 93.00 240.25 a 649.00 796.00 591.50 f 541.55 a 195.50 8.50 0.00 a 2564.80
1958 0.00 11.00 4.65 a 124.50 484.00 718.50 820.50 821.00 530.00 267.50 21.72 a 3.10 a 3806.47
1959 0.00 a 0.00 7.00 l 196.50 352.88 a 723.50 876.50 713.50 550.50 211.50 5.36 b 0.00 3630.24
1960 0.00 0.00 71.50 170.17 a 330.50 697.00 865.93 a 789.00 557.50 152.00 34.66 a 2.14 b 3670.40
1961 0.00 3.50 11.88 a 111.72 a 342.60 b 710.00 842.68 a 721.78 a 415.34 a 190.00 6.00 0.00 3355.52
1962 0.00 7.50 9.50 175.34 a 262.98 a 538.00 784.09 b 774.00 522.00 214.50 41.38 a 0.00 3329.29
1963 3.50 9.00 38.50 100.00 438.50 550.50 878.00 711.50 613.50 327.50 17.59 a 0.00 3688.09
1964 0.00 0.00 10.50 75.52 a 341.52 a 571.50 846.00 689.00 472.00 277.00 8.00 0.00 3291.03
1965 0.00 0.00 a 12.00 124.00 250.00 491.00 770.50 748.00 445.00 222.50 45.50 0.00 a 3108.50
1966 0.00 a 0.00 32.00 138.10 a 447.50 611.00 851.50 782.50 551.50 177.00 29.00 4.00 3624.10
1967 0.00 0.00 47.02 a 83.00 293.95 c 565.86 a 836.00 743.00 542.00 260.50 26.50 0.00 3397.83
1968 0.00 0.00 19.50 53.50 300.50 617.50 759.50 614.00 470.00 186.00 6.00 0.00 3026.50
1969 0.00 0.00 16.00 117.50 388.00 547.00 839.00 837.00 558.50 128.50 0.00 0.00 3431.50
1970 0.00 1.00 0.00 23.00 360.00 562.50 845.50 788.50 464.00 96.00 8.00 0.00 3148.50
1971 3.50 0.50 51.00 71.50 220.21 b 593.00 862.32 a 743.50 476.90 a 143.00 10.00 1.00 3176.42
1972 0.00 10.50 80.17 b 140.00 294.00 563.00 831.00 735.00 526.00 241.00 0.00 0.00 3420.67
1973 0.00 0.00 0.00 50.50 336.00 583.00 794.00 746.50 481.50 211.00 56.00 0.00 3258.50
1974 0.00 0.00 42.00 101.50 439.34 b 749.00 766.50 717.00 501.50 245.00 2.50 0.00 3564.34
1975 0.00 0.00 9.50 42.50 232.50 c 539.50 781.50 745.00 495.00 222.50 16.00 0.00 3084.00
1976 0.00 0.50 18.50 96.50 354.00 618.00 791.50 715.87 d 491.00 118.50 0.00 0.00 3204.37
1977 0.00 0.00 2.50 156.50 255.00 639.50 789.98 a 781.00 394.00 i 255.75 a 17.00 g 0.00 a 2880.23
1978 0.00 0.00 52.50 111.00 316.20 a 619.50 796.00 704.00 510.50 270.00 15.00 0.00 3394.70
1979 0.00 0.00 2.50 144.00 293.47 a 584.50 815.50 689.50 627.50 286.00 5.50 0.00 3448.47
1980 0.00 0.00 0.00 128.50 228.50 639.50 835.00 742.00 527.00 190.00 32.50 0.00 3323.00
1981 0.00 4.00 11.00 214.50 347.50 722.50 811.50 748.50 530.50 183.33 b 34.00 0.00 3607.33
1982 0.00 a 6.00 14.00 121.00 281.00 562.00 762.50 761.00 566.00 111.00 1.50 0.00 3186.00
1983 0.00 0.00 24.00 64.00 283.50 542.50 786.00 755.00 607.50 253.50 47.50 1.00 3364.50
1984 0.00 0.00 12.00 82.00 494.00 617.00 782.00 724.00 549.50 109.00 20.50 0.00 3390.00
1985 0.00 0.00 26.00 178.00 399.00 693.50 853.50 772.50 412.50 205.50 21.50 0.00 3562.00
1986 0.00 16.50 72.50 169.50 358.50 653.00 740.00 800.00 462.50 129.00 10.00 0.00 3411.50
1987 0.00 0.00 3.00 191.50 329.00 644.50 745.50 684.50 497.50 286.00 22.00 0.00 3403.50
1988 0.00 9.50 28.00 130.50 369.00 658.00 844.50 728.50 467.00 313.50 72.50 0.00 3621.00
1989 0.00 15.00 100.50 279.50 449.00 646.00 853.00 702.50 533.00 215.50 1.50 0.00 3795.50
1990 0.00 0.00 57.50 190.00 359.00 742.00 823.50 712.50 586.00 198.00 22.00 0.00 3690.50
1991 0.00 6.00 19.50 82.00 305.00 523.00 796.50 776.00 530.50 294.50 13.50 0.00 3346.50
1992 0.00 0.00 12.50 236.00 373.50 572.00 748.00 714.50 539.00 259.50 0.00 0.00 3455.00
1993 0.00 0.00 20.00 150.00 394.50 591.00 786.50 760.00 496.00 190.50 9.00 0.00 3397.50
1994 1.00 6.50 24.00 160.00 354.50 733.00 824.00 842.00 550.50 180.50 13.50 0.00 3689.50
1995 0.00 0.00 41.50 99.00 255.00 549.00 806.00 861.00 560.00 195.50 26.00 0.00 p 3393.00
1996 0.00 22.50 17.50 175.50 484.00 688.00 869.00 800.50 434.00 241.50 16.50 1.50 3750.50
1997 0.50 0.00 44.00 109.00 455.00 604.00 761.00 752.00 602.00 192.00 14.00 0.00 3533.50
1998 0.00 0.00 22.50 62.50 307.00 561.00 839.50 789.00 620.00 203.50 5.50 0.50 3411.00
1999 6.50 3.50 54.50 38.50 o 327.57 a 615.00 b 755.37 a 720.48 b 522.50 0.00 z 40.50 2.50 3048.42
2000 14.00 8.50 20.50 271.50 533.00 763.50 906.00 826.50 663.00 238.00 0.00 0.00 4244.50
2001 0.00 15.00 72.50 220.00 560.50 696.21 a 847.00 765.50 643.50 328.00 79.50 0.00 a 4227.71
2002 0.00 a 2.00 37.50 279.00 402.00 737.00 901.00 813.50 472.50 144.50 6.50 0.00 3795.50
2003 0.00 3.00 11.50 61.00 372.00 547.50 810.50 723.50 517.50 360.00 26.50 2.58 a 3435.58
2004 0.00 1.00 135.00 139.00 430.50 640.50 806.00 718.50 505.00 189.00 14.50 1.00 3580.00
2005 0.00 0.00 12.00 131.50 422.50 632.50 919.00 739.00 592.50 271.50 57.00 5.50 3783.00
2006 0.50 7.50 16.02 a 206.00 494.50 768.50 894.00 744.00 440.50 209.00 21.43 b 0.00 3801.95
2007 0.00 5.00 89.50 173.00 431.00 716.00 884.50 826.00 595.50 248.00 66.00 4.65 a 4039.15
2008 0.00 0.00 37.50 108.50 306.50 685.00 838.00 830.00 572.00 224.00 33.50 0.00 3635.00
2009 0.50 22.00 58.50 124.50 492.00 570.50 898.50 0.00 z 545.50 192.50 61.50 0.00 2966.00
2010 0.00 0.00 15.00 155.00 306.00 679.50 864.00 786.00 607.00 261.00 19.50 2.00 3695.00
2011 0.00 a 2.43 e 42.00 161.00 301.00 637.50 815.00 841.00 562.50 197.50 6.00 0.00 b 3565.93
2012 0.00 0.00 a 55.50 206.50 423.50 728.00 822.00 799.50 547.00 259.50 25.50 0.00 3867.00
2013 0.00 0.00 56.50 4.50 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 56.50
Period of Record Statistics
MEAN 0.41 3.18 30.83 138.08 359.45 626.07 819.74 758.52 539.89 225.54 20.38 0.66 3521.72
S.D. 1.79 5.45 30.01 60.78 78.90 68.97 42.63 46.54 58.38 60.80 18.32 1.54 254.40
SKEW 6.16 2.18 1.65 0.46 0.24 0.24 0.21 0.02 -0.03 0.41 1.17 3.05 0.36
MAX 14.00 23.50 135.00 279.50 560.50 768.50 919.00 861.50 663.00 443.00 79.50 9.00 4244.50
MIN 0.00 0.00 0.00 23.00 199.00 491.00 740.00 614.00 412.50 96.00 0.00 0.00 3026.50
NO YRS 81 82 81 80 81 81 82 79 79 81 81 81 72