ZION NATIONAL PARK, UTAH

Monthly Total Growing Degree Days

(429717)

Base Temperature = 40 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 145.18 a 135.00 407.00 458.00 902.50 1063.50 1359.50 1289.50 1067.00 729.50 333.50 58.00 7948.18
1929 35.50 52.50 302.50 430.00 860.50 1082.00 1341.00 1268.00 943.50 735.00 191.00 180.00 7421.50
1930 29.50 230.50 278.00 682.50 635.50 1130.50 1315.50 1213.00 998.50 597.50 256.50 25.50 7393.00
1931 82.50 179.00 315.00 617.00 852.00 1124.50 1472.00 1324.50 1018.00 712.50 247.50 18.50 7963.00
1932 4.00 126.00 300.50 527.50 746.00 1059.00 1264.00 1316.50 1077.00 623.00 384.50 54.50 7482.50
1933 7.50 30.00 330.00 432.50 620.53 b 1158.50 1407.50 1309.00 1127.00 878.00 448.00 202.50 7951.03
1934 138.00 291.00 622.50 757.50 1045.00 1031.00 1379.50 1332.50 1062.50 817.50 426.50 146.00 9049.50
1935 163.00 220.50 259.50 549.50 709.50 1166.00 1303.00 1280.00 1081.00 715.00 267.00 140.50 7854.50
1936 112.50 106.00 366.50 619.00 980.50 1253.00 1342.00 1303.00 1000.50 662.50 347.50 83.50 8176.50
1937 0.00 88.00 292.00 486.00 991.00 1119.50 1385.50 1407.50 1136.00 780.50 407.00 146.50 8239.50
1938 117.00 113.00 233.00 561.50 802.50 1173.50 1355.50 1341.00 1156.50 729.00 151.50 113.00 7847.00
1939 49.50 16.50 385.50 643.50 915.02 a 1182.50 1463.00 1442.00 1015.50 668.50 465.00 274.50 8521.02
1940 124.00 120.50 445.00 579.50 1042.50 1287.00 1408.50 1392.00 1013.00 788.50 222.00 172.50 8595.00
1941 107.00 228.00 299.50 327.50 846.50 1106.50 1404.50 0.00 z 739.00 i 542.50 351.50 153.00 5366.50
1942 129.50 70.00 a 276.50 557.00 764.50 1123.93 b 1261.50 1249.50 1071.50 718.50 346.50 148.50 7717.43
1943 71.50 222.44 a 339.50 655.50 873.50 1017.00 1343.50 1238.50 1088.00 766.22 a 392.50 86.50 8094.66
1944 54.25 c 42.00 h 282.00 450.00 a 847.00 995.00 1348.00 1333.50 1146.00 854.50 266.50 135.37 a 7712.12
1945 146.50 161.00 210.00 481.50 863.00 1009.00 1375.50 1274.62 a 1062.50 757.50 297.00 60.50 7698.62
1946 64.50 175.00 408.00 725.50 878.00 1224.83 a 1411.00 1340.00 1123.00 520.00 178.00 173.00 8220.83
1947 47.00 308.50 455.50 574.00 1006.50 1070.00 1356.50 1229.50 1156.00 747.00 158.50 37.50 8146.50
1948 126.50 110.50 127.50 533.50 866.00 1054.50 1293.00 1267.00 1130.00 779.65 a 162.50 36.50 7487.15
1949 0.00 64.00 245.00 646.50 820.00 1051.00 1396.00 1315.50 1128.50 641.50 550.50 123.00 7981.50
1950 75.50 243.00 393.50 681.00 850.00 1124.00 1371.00 1309.50 1030.50 920.00 466.03 a 306.00 8770.03
1951 103.00 213.00 325.00 583.00 828.00 1106.00 1397.50 1228.50 1102.50 666.50 249.50 37.50 7840.00
1952 46.00 126.50 140.00 577.00 891.50 1035.50 1319.80 d 1320.08 a 1076.50 929.00 236.50 63.50 7761.88
1953 204.00 196.50 423.50 544.50 680.00 1113.00 1419.00 1291.50 1179.50 746.00 434.00 53.50 8285.00
1954 138.50 328.50 257.00 732.50 985.50 1103.50 1406.50 1258.50 1058.50 794.50 448.00 123.50 8635.00
1955 20.50 76.00 306.50 516.00 830.00 1079.00 1316.00 1342.00 1099.00 839.50 308.50 232.50 7965.50
1956 203.00 98.50 426.50 551.00 908.50 1223.00 1331.50 1266.00 1181.00 772.00 292.00 136.00 8389.00
1957 65.50 315.50 372.50 489.50 693.00 1169.50 1354.00 1264.50 1069.50 624.00 135.00 128.00 7680.50
1958 84.50 242.00 165.50 448.50 966.00 1168.00 1316.50 1406.50 1033.00 816.50 355.00 256.50 8258.50
1959 130.00 94.00 347.00 674.00 841.50 1242.00 1465.50 1281.33 a 991.00 778.00 337.00 146.50 8327.83
1960 53.50 48.50 429.50 591.00 872.50 1238.00 1481.00 1366.50 1164.50 700.00 356.50 64.50 8366.00
1961 151.50 167.00 291.50 560.00 879.00 1274.50 1421.00 1270.00 890.00 670.00 181.00 52.50 7808.00
1962 66.50 183.50 202.00 705.50 771.00 1078.50 1311.50 1348.00 1087.50 765.00 472.50 182.50 8174.00
1963 39.50 302.50 268.50 427.50 968.00 1004.00 1378.00 1225.00 1092.00 825.00 334.00 67.50 7931.50
1964 56.50 43.50 175.50 431.50 735.00 1035.00 1386.50 1256.00 998.00 871.50 240.00 99.00 7328.00
1965 151.00 182.50 226.50 416.50 691.00 936.00 1284.00 1262.50 849.00 831.00 384.50 140.00 7354.50
1966 60.00 60.00 443.50 600.00 937.50 1127.00 1329.50 1354.00 1067.00 709.50 372.50 114.00 8174.50
1967 81.50 155.00 367.00 328.50 790.00 975.50 1372.50 1380.50 1059.00 806.00 422.00 23.50 7761.00
1968 70.00 287.50 379.00 432.50 818.50 1135.00 1304.00 1145.00 983.50 753.50 261.00 74.00 7643.50
1969 137.00 80.00 253.50 570.00 952.00 1039.00 1365.50 1440.50 1127.00 555.00 344.00 221.00 8084.50
1970 126.50 297.50 241.50 392.00 914.00 1139.00 1369.50 1363.00 977.50 618.50 351.50 103.50 7894.00
1971 185.50 158.50 375.50 539.50 708.00 1123.50 1429.50 1308.00 1000.00 593.00 251.00 42.00 7714.00
1972 59.50 273.00 568.00 589.50 906.00 1125.50 1443.50 1279.00 969.50 613.00 129.50 74.50 8030.50
1973 5.50 118.50 127.00 435.50 899.50 1079.50 1368.50 1304.50 1017.00 731.60 a 301.00 152.00 7540.10
1974 44.00 140.50 425.50 503.50 967.50 1277.00 1334.00 1312.00 1118.50 770.00 284.00 41.33 a 8217.83
1975 53.00 96.00 210.00 292.24 a 731.08 a 1080.50 1328.00 1266.50 1073.50 704.00 15.50 q 154.50 6989.32
1976 151.00 255.50 252.50 497.07 a 935.00 1092.50 1349.00 1231.00 1024.00 650.50 433.00 122.00 7993.07
1977 71.50 252.00 220.50 661.00 680.00 1192.50 1342.00 1321.00 1035.00 833.50 349.50 202.00 8160.50
1978 89.00 159.50 417.50 480.00 770.00 1138.00 1386.00 1298.00 975.50 837.00 d 252.00 24.00 7826.50
1979 2.00 90.00 262.50 530.00 827.00 1133.00 1373.00 1226.00 1192.00 853.00 203.00 176.00 7867.50
1980 80.00 229.00 199.43 a 545.50 705.77 a 1087.50 1344.37 a 1259.00 1062.41 a 728.50 367.00 299.00 7907.48
1981 212.50 250.00 283.50 656.50 815.50 1219.50 1391.00 1323.00 1070.00 605.53 a 455.00 215.50 8497.53
1982 48.00 206.50 280.50 489.50 851.50 1071.00 1285.00 1277.50 978.50 555.00 214.00 97.00 7354.00
1983 110.00 170.00 251.50 355.50 759.00 1063.00 1286.50 1234.00 1061.00 735.00 312.00 87.00 7424.50
1984 100.00 127.50 323.50 472.00 1017.00 1094.00 1324.00 1219.00 1036.50 444.50 262.00 76.50 7496.50
1985 56.50 149.50 284.00 646.00 871.50 1193.00 1411.50 1322.50 901.50 717.00 208.50 134.00 7895.50
1986 299.50 241.50 497.00 558.00 913.50 1237.00 1295.00 1350.00 863.50 643.00 292.00 143.50 8333.50
1987 92.50 153.50 274.00 674.00 879.50 1217.50 1281.00 1261.00 1078.50 859.50 281.00 70.50 8122.50
1988 89.00 245.00 340.00 533.00 821.00 1183.50 1443.50 1274.00 988.50 950.00 313.50 152.50 8333.50
1989 59.50 189.50 533.50 766.50 890.50 1156.00 1467.00 1235.50 1057.50 723.00 392.00 113.50 8584.00
1990 109.50 145.00 446.00 645.50 840.00 1228.00 1386.50 1280.50 1120.50 794.00 355.50 66.00 8417.00
1991 34.50 349.50 190.50 474.00 735.50 1047.50 1394.50 1345.00 1097.50 841.50 292.00 107.00 7909.00
1992 76.50 280.50 387.50 742.76 a 932.50 1108.50 1275.00 1318.00 1091.00 823.50 168.50 27.00 8231.26
1993 58.50 84.50 412.00 549.50 887.50 1017.00 1264.00 1255.50 1042.00 671.50 182.50 82.00 7506.50
1994 128.00 89.50 427.00 508.50 843.00 1249.00 1383.50 1373.00 1097.00 644.50 164.00 141.00 8048.00
1995 77.50 388.50 341.00 445.00 713.50 965.50 1329.00 1333.00 1087.50 752.50 453.00 153.50 8039.50
1996 127.50 293.50 359.00 598.00 882.50 1196.50 1400.50 1366.00 952.00 630.50 304.50 100.00 8210.50
1997 90.50 140.50 544.00 509.50 1021.50 1121.50 1332.00 1322.00 1035.50 688.00 365.00 56.50 8226.50
1998 154.50 82.00 355.47 a 415.50 763.50 986.50 1379.00 1390.00 1027.50 660.50 283.50 135.50 7633.47
1999 155.50 225.50 497.00 390.50 806.00 1098.50 1315.00 1303.50 1074.31 a 877.50 540.50 111.50 8395.31
2000 221.00 230.00 376.00 747.00 1014.73 a 1232.00 1381.50 1384.00 1080.00 698.50 161.50 152.00 8678.23
2001 93.52 a 139.00 433.47 b 538.45 a 1017.00 1197.50 1333.00 1385.50 1160.50 834.00 430.50 39.86 c 8602.29
2002 82.50 175.00 324.50 730.50 904.00 1238.00 1478.00 1357.50 1025.50 662.00 289.00 110.00 8376.50
2003 304.50 127.50 335.00 465.50 942.50 1237.50 1489.00 1409.50 1157.00 979.50 248.00 160.50 8856.00
2004 128.00 79.50 609.00 604.50 967.00 1241.00 1417.00 1318.50 1069.50 651.50 286.50 143.00 8515.00
2005 195.50 180.50 308.00 524.00 890.00 1058.50 1448.00 1242.00 1058.00 759.00 375.50 140.50 8179.50
2006 137.00 196.00 264.50 589.50 1028.68 a 1255.86 a 925.50 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3471.55
Period of Record Statistics
MEAN 98.76 173.09 333.56 547.47 858.34 1127.47 1366.34 1305.60 1057.09 734.24 312.10 119.21 8044.60
S.D. 62.18 83.83 106.71 108.24 102.17 84.12 56.45 58.09 71.38 103.99 99.05 64.82 389.45
SKEW 0.93 0.32 0.45 0.02 -0.22 -0.02 0.20 0.13 -0.59 -0.12 0.16 0.69 0.13
MAX 304.50 388.50 622.50 766.50 1045.00 1287.00 1489.00 1442.00 1192.00 979.50 550.50 306.00 9049.50
MIN 0.00 16.50 127.00 292.24 620.53 936.00 1261.50 1145.00 849.00 444.50 129.50 18.50 7328.00
NO YRS 79 78 79 79 79 79 78 77 77 78 77 78 75