PETRIFIED FOREST NP, ARIZONA

Monthly Total Growing Degree Days

(026468)

Base Temperature = 40 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 4.50 34.00 151.79 b 431.00 650.47 b 902.00 1103.50 1008.00 854.50 505.50 141.50 1.50 5788.26
1932 0.50 69.00 169.00 394.50 662.50 868.00 1127.00 1098.00 829.00 432.00 113.79 a 17.00 5780.29
1933 0.00 18.00 203.00 275.50 531.00 1035.50 1182.00 1109.00 938.50 575.00 142.50 39.00 6049.00
1934 22.50 106.50 404.50 515.50 794.50 877.50 1172.50 1083.00 808.00 567.00 204.00 20.00 6575.50
1935 32.50 43.50 146.00 330.50 484.00 911.50 1072.50 1050.50 765.50 458.50 64.50 10.50 5370.00
1936 23.00 34.50 157.50 432.00 689.50 972.00 1124.50 1107.00 780.00 511.00 83.50 13.00 5927.50
1937 0.00 23.50 85.00 327.00 657.00 840.00 1085.00 1171.50 951.00 569.00 205.50 51.50 5966.00
1938 46.50 104.00 179.50 405.50 589.50 935.50 1107.00 447.50 s 555.50 k 538.00 71.50 31.00 a 4008.00
1939 8.02 b 2.59 a 361.00 481.50 728.00 963.50 1196.50 1123.75 a 888.50 477.00 184.00 70.00 6484.36
1940 14.00 62.50 246.00 381.50 723.85 a 982.00 1112.50 1062.50 813.62 a 527.50 111.72 a 21.00 6058.69
1941 11.00 102.00 168.00 259.66 a 645.00 813.50 1062.50 1020.50 779.50 425.50 172.00 37.50 5496.66
1942 15.00 31.50 87.50 367.50 580.50 882.50 1144.00 1022.50 788.50 488.00 243.50 55.00 5706.00
1943 41.50 101.00 228.00 521.50 722.30 a 911.00 1139.00 1085.00 853.50 545.50 152.50 22.00 6322.80
1944 9.00 45.00 113.50 291.00 641.00 845.00 1091.50 1105.00 848.79 a 602.00 134.00 18.50 5744.29
1945 19.00 95.50 107.00 334.50 656.00 806.50 1130.50 1126.50 859.50 581.00 118.50 8.00 5842.50
1946 13.00 67.50 247.50 542.50 655.50 995.00 1122.50 1066.00 865.00 428.50 97.50 74.00 6174.50
1947 21.50 78.50 209.00 377.50 735.50 876.50 1153.00 1037.50 911.00 540.50 77.00 8.00 6025.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1119.00 1087.50 920.00 532.00 94.00 47.50 3800.00
1949 18.00 50.50 172.50 444.50 656.50 910.50 1100.00 1035.00 913.45 a 404.66 c 211.03 a 57.50 5974.14
1950 65.00 126.00 a 204.00 476.00 618.00 915.00 1072.94 d 1046.00 785.00 753.00 236.50 74.00 6371.44
1951 28.50 79.50 174.00 385.00 752.61 d 855.52 a 1191.50 1068.50 899.48 a 511.00 125.00 51.00 6121.61
1952 45.00 41.50 104.50 394.00 708.00 937.00 1109.00 1119.50 885.00 622.58 a 127.50 2.00 6095.58
1953 73.50 48.50 236.63 a 377.50 516.50 969.00 1162.00 1059.00 766.50 f 493.79 c 211.50 9.00 5156.92
1954 40.50 f 114.50 161.00 527.00 736.00 924.31 a 1155.00 1030.00 882.00 588.00 206.50 67.00 6391.31
1955 16.50 32.00 175.50 328.00 632.40 a 859.50 1085.50 1077.50 899.00 602.90 b 156.50 121.50 5986.80
1956 103.50 29.00 230.50 351.50 739.00 1023.10 a 1089.50 1004.00 930.50 566.00 54.50 15.50 6136.60
1957 66.00 196.50 204.00 344.00 535.27 a 949.00 1106.00 841.50 f 841.55 a 490.00 91.00 38.75 a 4862.07
1958 16.50 132.00 118.32 a 357.50 794.00 1018.50 1130.50 1131.00 830.00 550.50 171.21 a 70.27 a 6320.29
1959 32.55 a 46.50 98.00 l 483.00 661.85 a 1023.50 1186.50 1023.50 850.50 490.50 121.07 b 25.50 5944.97
1960 4.50 16.00 303.50 441.21 a 638.00 997.00 1175.93 a 1099.00 857.50 433.50 181.55 a 20.31 b 6168.00
1961 5.50 68.50 167.40 a 368.28 a 647.26 b 1010.00 1152.68 a 1031.78 a 715.34 a 456.50 108.50 24.00 5755.75
1962 4.50 82.50 89.00 469.14 a 568.33 a 838.00 1094.09 b 1084.00 822.00 521.00 244.14 a 14.50 5831.20
1963 27.00 134.00 189.50 348.00 748.50 850.50 1188.00 1021.50 913.50 637.50 172.76 a 0.00 6230.76
1964 10.50 4.50 84.50 283.45 a 643.25 a 871.50 1156.00 999.00 772.00 585.00 111.00 48.00 5568.70
1965 29.00 49.26 a 118.50 349.00 548.50 791.00 1080.50 1058.00 744.50 521.50 257.50 38.23 a 5585.49
1966 2.07 a 11.00 247.00 413.28 a 757.50 911.00 1161.50 1092.50 851.50 477.50 247.50 60.50 6232.84
1967 46.50 37.50 280.55 a 331.50 589.55 c 865.86 a 1146.00 1053.00 842.00 554.00 224.50 4.00 5974.97
1968 7.50 102.50 178.00 285.00 609.00 917.50 1069.50 924.00 770.00 486.50 117.00 15.00 5481.50
1969 64.00 33.50 109.50 402.50 682.00 847.00 1149.00 1147.00 858.50 387.00 107.50 66.50 5854.00
1970 34.00 101.50 80.00 197.50 658.00 862.50 1155.50 1098.50 764.00 342.00 151.50 21.50 5466.50
1971 47.00 44.50 209.50 319.50 528.07 b 893.00 1172.32 a 1053.50 776.38 a 383.50 127.00 38.00 5592.27
1972 31.50 117.50 323.36 b 405.50 604.00 863.00 1141.00 1045.00 826.00 512.00 48.50 6.00 5923.36
1973 8.50 34.50 69.50 250.00 639.50 883.00 1104.00 1056.50 781.50 509.50 221.00 42.00 5599.50
1974 14.00 32.00 270.00 341.50 749.34 b 1049.00 1076.50 1027.00 801.50 524.00 104.00 10.00 5998.84
1975 24.50 35.00 143.00 235.00 524.23 c 839.50 1091.50 1055.00 795.00 501.00 149.00 10.50 5403.23
1976 4.50 109.50 120.00 352.50 663.00 918.00 1101.50 1025.87 d 791.00 372.50 122.50 2.50 5583.37
1977 1.00 38.50 110.50 402.50 557.00 939.50 1099.98 a 1091.00 604.00 i 565.75 a 132.00 g 90.93 a 4896.67
1978 45.00 51.00 253.00 386.00 613.28 a 919.50 1106.00 1014.00 810.50 571.00 152.00 7.00 5928.28
1979 3.50 39.00 105.00 378.50 580.73 a 884.50 1125.50 999.50 927.50 575.50 75.00 12.50 5706.73
1980 47.00 82.00 112.50 356.50 533.50 939.50 1145.00 1052.00 827.00 414.00 169.50 69.00 5747.50
1981 24.00 92.50 135.00 491.50 657.50 1022.50 1121.50 1058.50 830.50 470.88 b 229.50 67.00 6200.88
1982 19.63 a 89.00 189.00 401.00 590.50 862.00 1072.50 1071.00 866.00 380.50 109.50 34.50 5685.13
1983 18.00 44.50 172.00 252.50 581.00 842.50 1096.00 1065.00 907.50 563.50 201.50 68.50 5812.50
1984 3.50 29.00 182.00 332.50 804.00 917.00 1092.00 1034.00 849.50 343.50 183.00 17.50 5787.50
1985 9.50 60.00 203.00 461.00 709.00 993.50 1163.50 1082.50 712.50 515.00 154.50 18.00 6082.00
1986 65.50 149.50 287.50 434.00 663.50 953.00 1050.00 1110.00 762.50 405.50 149.00 24.00 6054.00
1987 26.00 67.50 122.50 461.50 639.00 944.50 1055.50 994.50 797.50 595.50 135.50 34.00 5873.50
1988 16.50 88.00 195.50 387.00 669.00 958.00 1154.50 1038.50 767.00 623.50 235.00 24.50 6157.00
1989 8.00 105.00 355.00 576.50 758.50 946.00 1163.00 1012.50 833.00 493.00 147.50 16.00 6414.00
1990 18.50 48.50 246.50 479.50 669.00 1042.00 1133.50 1022.50 886.00 496.50 170.00 19.00 6231.50
1991 1.50 91.00 129.00 336.00 612.50 822.50 1106.50 1086.00 830.50 569.00 127.50 4.50 5716.50
1992 0.00 62.00 219.50 527.00 683.50 872.00 1058.00 1024.50 839.00 569.50 76.50 23.50 5955.00
1993 48.00 56.00 216.50 420.00 703.50 891.00 1096.50 1070.00 796.00 468.50 102.00 19.00 5887.00
1994 25.50 68.50 243.00 420.00 664.50 1033.00 1134.00 1152.00 850.50 462.50 129.50 35.00 6218.00
1995 42.00 128.00 244.50 319.50 552.00 849.00 1116.00 1171.00 860.00 491.00 252.00 81.50 p 6025.00
1996 29.00 185.50 201.00 451.50 794.00 988.00 1179.00 1110.50 734.00 470.50 142.50 70.50 6356.00
1997 32.50 27.50 272.00 326.50 765.00 904.00 1071.00 1062.00 902.00 441.50 157.00 1.50 5962.50
1998 14.50 31.50 172.50 260.50 617.00 861.00 1149.50 1099.00 920.00 492.50 172.50 51.00 5841.50
1999 80.00 118.50 302.50 131.50 o 632.40 a 915.00 b 1065.37 a 1030.48 b 822.50 0.00 z 279.00 18.00 5263.75
2000 145.00 168.50 218.00 557.00 843.00 1063.50 1216.00 1136.50 963.00 534.00 49.50 32.50 6926.50
2001 17.00 129.00 304.00 496.00 869.00 996.21 a 1157.00 1075.50 943.50 637.50 283.50 20.67 a 6928.87
2002 38.23 a 83.50 217.00 577.00 711.50 1037.00 1211.00 1123.50 772.50 415.50 91.50 3.50 6281.73
2003 17.00 40.50 131.00 271.00 678.00 847.50 1120.50 1033.50 817.50 663.50 182.00 59.42 a 5861.42
2004 8.00 39.50 392.50 415.00 740.50 940.50 1116.00 1028.50 805.00 476.50 144.00 29.00 6135.00
2005 74.00 73.00 181.00 404.00 732.50 932.50 1229.00 1049.00 892.50 580.00 215.00 61.50 6424.00
2006 45.00 88.00 197.37 a 500.00 804.50 1068.50 1204.00 1054.00 740.50 491.00 229.29 b 38.00 6460.15
2007 18.50 108.50 314.50 464.00 735.50 1016.00 1194.50 1136.00 895.50 544.00 296.50 36.17 a 6759.67
2008 19.50 51.00 211.00 370.50 604.50 985.00 1148.00 1140.00 872.00 505.50 179.00 33.50 6119.50
2009 34.50 115.50 246.50 372.50 802.00 870.50 1208.50 0.00 z 845.50 453.00 213.00 5.50 5167.00
2010 2.00 17.00 153.00 411.50 604.50 979.50 1174.00 1096.00 907.00 560.00 125.50 104.50 6134.50
2011 16.53 a 73.04 e 279.00 421.00 590.50 937.50 1125.00 1151.00 862.50 478.50 121.00 20.84 b 6076.42
2012 33.00 50.23 a 258.50 486.50 733.50 1028.00 1132.00 1109.50 847.00 550.00 223.00 58.00 6509.23
2013 29.00 9.00 261.00 14.50 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 299.00
Period of Record Statistics
MEAN 27.01 69.86 198.29 394.21 664.12 926.07 1129.74 1068.52 839.86 511.71 157.06 33.67 6011.15
S.D. 25.16 41.89 75.18 83.72 83.08 68.98 42.63 46.54 58.42 75.20 59.01 25.87 335.21
SKEW 1.92 0.75 0.51 0.08 0.14 0.24 0.20 0.02 -0.03 0.11 0.30 0.97 0.48
MAX 145.00 196.50 404.50 577.00 869.00 1068.50 1229.00 1171.50 963.00 753.00 296.50 121.50 6928.87
MIN 0.00 2.59 69.50 197.50 484.00 791.00 1050.00 924.00 712.50 342.00 48.50 0.00 5370.00
NO YRS 81 82 81 80 81 81 82 79 79 81 81 81 72