TUCSON WFO, ARIZONA

Monthly Total Growing Degree Days

(028815)

Base Temperature = 40 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 200801
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
1894 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1185.00 969.27 a 720.50 463.00 3337.77
1895 371.50 389.00 589.50 768.46 d 1077.50 1232.50 1431.68 a 1326.50 1224.00 894.00 452.00 281.00 9999.00
1896 32.50 z 136.00 r 665.50 715.50 1039.50 1086.00 f 1395.50 1364.50 1219.50 892.50 543.00 423.84 b 8259.34
1897 296.00 299.00 435.00 756.00 1105.00 1202.50 1420.12 b 1361.23 c 1198.27 d 854.00 613.00 290.50 9830.62
1898 209.50 482.50 488.77 a 822.00 363.00 r 951.50 h 1435.00 1388.00 1179.00 882.00 435.00 232.00 7553.77
1899 208.00 276.50 512.00 771.50 866.00 1227.00 1443.00 1350.50 1272.50 839.00 540.00 355.00 9661.00
1900 399.50 340.00 703.00 572.50 1074.50 1278.00 1497.00 1324.00 1099.50 882.50 604.00 359.00 9999.00
1901 345.50 334.00 483.50 652.00 996.00 1182.00 1465.00 1389.50 1188.50 909.00 642.50 343.00 9930.50
1902 325.50 351.50 436.50 789.50 977.00 1294.00 1382.08 a 1368.00 1194.50 960.50 451.50 319.00 9849.58
1903 276.00 167.50 468.50 665.50 930.50 1212.00 1418.50 1420.00 1150.50 849.00 602.50 369.79 c 9530.29
1904 181.50 471.00 627.00 716.50 1016.00 1256.50 1392.00 1316.00 1112.00 879.50 561.00 248.50 9777.50
1905 269.50 311.63 a 437.50 550.00 762.50 1131.50 1370.50 1428.50 1211.50 921.50 527.50 230.50 9152.63
1906 348.00 427.00 571.50 659.50 920.50 1201.00 1431.00 1298.00 1173.00 893.50 532.50 418.50 9874.00
1907 351.00 446.50 568.50 755.50 955.00 1140.00 1421.50 1332.50 1199.00 919.00 543.00 355.00 9986.50
1908 345.00 336.50 585.00 725.00 873.50 1176.00 1359.50 1314.00 1145.00 738.50 541.00 351.00 9490.00
1909 426.50 293.00 404.00 701.50 888.00 1241.50 1394.00 1327.50 1134.50 859.00 520.00 245.00 9434.50
1910 336.50 293.50 716.50 806.00 1094.00 1286.00 1422.50 1405.50 1262.00 944.00 538.50 388.50 9999.00
1911 470.50 330.50 703.50 745.50 1013.00 1241.50 1351.00 1397.00 1235.50 839.00 330.00 a 179.50 9836.50
1912 333.00 338.50 492.00 560.50 951.00 1289.50 1290.12 a 1323.00 1104.50 795.50 515.00 190.00 9182.62
1913 199.00 286.00 431.00 722.00 964.00 1146.00 1349.00 1349.00 1141.50 833.00 585.00 274.00 9279.50
1914 430.00 345.00 641.00 775.50 1043.50 1267.00 1336.50 1371.50 1201.00 830.50 613.00 226.82 a 9999.00
1915 218.00 308.50 432.50 636.00 836.00 892.50 h 1465.50 1451.12 b 1154.00 0.00 z 0.00 z 10.00 z 6501.62
1916 340.50 519.41 a 667.50 719.50 944.50 1204.50 1376.00 1328.00 1177.24 a 813.50 462.00 227.50 9780.15
1917 265.00 283.50 422.50 655.00 823.00 1266.50 1408.43 a 1337.00 1206.72 a 955.50 606.00 404.00 9633.16
1918 247.48 a 410.00 647.00 724.50 919.50 1363.00 1433.50 1295.50 1241.90 a 927.50 487.50 280.00 9977.38
1919 255.50 226.00 462.00 764.00 993.50 1273.00 1336.00 1336.50 1106.00 745.50 516.00 396.00 9410.00
1920 366.50 439.00 459.00 559.00 983.50 1194.50 1469.50 1320.50 1108.97 a 716.44 d 506.50 233.00 9356.41
1921 333.50 393.00 641.50 647.00 900.50 1185.00 1366.00 1294.50 1160.50 947.50 549.50 446.50 9865.00
1922 255.50 358.50 449.00 634.00 1037.00 1291.50 1415.50 1370.50 1218.00 913.00 391.50 422.00 9756.00
1923 436.50 385.50 495.00 724.50 1063.00 1152.50 1381.00 1265.00 1102.00 788.50 478.50 310.00 9582.00
1924 271.00 417.50 390.08 a 646.50 1049.00 1333.00 1445.50 1429.00 1253.00 847.50 585.00 323.00 9990.08
1925 246.50 457.50 634.50 764.50 1082.50 1209.83 a 1497.19 d 1354.00 1148.50 871.00 490.34 a 320.00 9999.00
1926 195.00 428.00 608.50 740.00 992.00 1274.00 1410.50 a 1424.00 1226.50 966.50 571.00 332.00 9999.00
1927 460.50 460.50 527.00 742.50 1030.50 1209.00 1457.00 1361.50 1172.14 b 902.00 652.00 255.23 a 9999.00
1928 336.00 350.50 629.00 688.00 1096.50 1251.11 c 1473.53 a 1348.50 1233.00 947.50 537.00 308.50 9999.00
1929 251.00 273.50 487.00 668.00 1030.00 1247.00 1434.50 1370.00 1191.00 920.00 420.50 396.00 9688.50
1930 303.50 443.50 513.50 838.00 927.50 1276.55 a 1423.50 1405.00 1147.00 847.00 535.50 322.92 a 9983.47
1931 302.00 379.50 552.50 815.00 1036.00 1245.00 1505.00 1310.50 1215.00 895.00 425.00 265.00 9945.50
1932 124.50 423.50 540.00 705.52 a 983.50 1188.50 1410.00 1399.13 a 1219.50 863.50 598.00 230.50 9686.15
1933 235.00 219.00 551.00 617.00 829.25 a 1267.76 a 1470.50 1419.50 1247.50 990.50 579.50 381.50 9808.01
1934 293.50 458.00 740.50 869.50 1189.00 1192.00 1482.00 1353.50 1183.97 a 950.15 a 505.50 365.91 c 9999.00
1935 390.50 418.50 470.50 741.50 855.50 1260.50 1417.50 1312.00 1149.50 895.00 436.00 356.50 9703.50
1936 272.50 380.00 593.00 807.50 1094.50 1316.50 1449.50 1358.00 1129.00 877.76 d 595.86 a 334.00 9999.00
1937 98.00 357.50 494.00 712.50 1049.00 1236.50 1435.50 1425.00 1256.00 961.50 591.11 c 442.00 9999.00
1938 384.50 396.50 544.50 781.03 a 971.00 1256.00 1377.50 1342.50 1237.00 929.50 0.00 z 405.00 9625.03
1939 322.00 163.50 596.50 816.00 1051.93 a 1279.00 1463.00 1380.50 1185.52 a 853.00 666.00 504.50 9999.00
1940 389.50 371.50 617.00 763.50 802.00 h 1279.00 1441.00 1361.00 1191.21 a 969.35 e 479.50 501.50 9364.05
1941 381.50 479.50 543.50 617.50 1013.50 1197.50 1420.00 1337.50 1162.00 835.50 577.00 354.50 9919.50
1942 378.50 306.00 466.00 711.00 1006.00 1237.50 1508.50 1374.50 1187.50 840.00 586.50 350.00 9952.00
1943 344.50 445.00 595.50 829.50 1038.50 b 1234.50 1434.50 1326.50 1191.50 916.00 560.00 279.00 f 9916.00
1944 264.50 319.00 512.50 715.00 1030.00 1214.00 1475.00 1474.00 1192.50 977.00 440.50 322.50 9936.50
1945 234.50 f 360.00 474.00 740.00 1052.50 1157.00 1455.50 1391.50 1183.50 891.50 463.50 257.00 9426.00
1946 226.50 305.00 616.00 920.50 1008.00 1312.50 1411.00 1349.00 1217.00 722.00 377.50 382.50 9847.50
1947 223.00 430.00 562.50 728.50 1118.00 1247.00 1493.00 1378.50 1277.50 925.50 337.00 f 247.50 9631.00
1948 355.00 333.00 434.50 837.50 1084.50 1296.50 1505.50 1462.50 1328.00 1037.00 414.00 383.00 9999.00
1949 174.50 305.50 579.50 843.50 1059.50 1313.00 1439.50 1413.00 1314.50 825.50 712.50 358.50 9999.00
1950 345.00 479.00 636.50 882.50 1002.00 1244.50 1360.00 1408.50 1138.50 1132.50 698.50 545.00 9999.00
1951 362.00 431.00 590.50 787.50 1064.00 1216.50 1543.50 1411.00 1289.00 994.00 589.50 372.00 9999.00
1952 421.50 369.00 417.00 782.50 1145.50 1314.50 1457.00 1455.50 1317.00 1103.50 504.00 338.50 9999.00
1953 449.50 380.00 657.00 767.00 908.50 1320.00 1488.50 1481.00 1276.50 955.50 650.50 290.00 9999.00
1954 423.00 568.50 604.00 925.50 1126.85 a 1259.00 1438.00 1339.50 1251.00 987.00 610.50 395.50 9999.00
1955 205.00 268.00 586.00 700.00 965.50 1234.50 1357.50 1302.50 1225.00 1037.50 551.50 469.00 9902.00
1956 507.50 286.50 645.50 753.50 1122.50 1389.50 1419.50 1380.00 1326.00 957.50 563.50 416.00 9999.00
1957 465.00 594.00 649.00 779.00 971.50 1374.50 1499.00 1409.50 1250.00 904.00 457.00 483.50 9999.00
1958 384.00 451.00 460.50 750.50 1230.00 1353.00 1486.00 1425.50 1208.00 1012.00 584.50 527.50 9999.00
1959 485.50 383.50 628.00 931.00 1057.00 1406.50 1485.50 1320.00 1215.52 a 961.50 606.50 423.50 9999.00
1960 296.50 301.50 731.50 863.00 1088.00 1397.50 1507.00 1461.00 1292.31 d 910.50 646.50 356.50 9999.00
1961 474.00 427.00 660.00 856.50 1069.50 1357.00 1447.00 1386.50 1171.50 916.50 499.00 366.50 9999.00
1962 362.50 473.00 484.00 913.97 a 1022.00 1237.00 1441.50 1466.00 1278.50 950.50 643.45 a 457.50 9999.00
1963 295.50 494.50 566.78 a 723.00 1134.00 1180.50 1501.95 a 1338.50 1288.45 a 1002.52 c 579.50 405.00 9999.00
1964 257.50 258.50 468.88 c 708.00 1016.00 1252.76 a 1472.50 a 1350.50 1155.00 1006.50 470.50 396.80 a 9813.43
1965 420.57 a 354.67 a 516.15 a 778.50 943.43 a 1133.00 1479.00 1430.50 1155.00 b 1000.27 a 0.00 z 0.00 z 9211.08
1966 279.00 260.00 638.00 827.50 1132.50 1309.50 1475.00 1406.50 1193.00 887.50 610.50 356.50 9999.00
1967 298.50 412.22 a 690.27 a 665.17 a 997.50 1235.00 1433.75 a 1396.50 1244.00 997.00 701.50 352.50 9999.00
1968 448.00 612.00 665.50 762.00 1079.00 1356.67 c 1472.50 b 1344.00 1218.50 998.00 560.00 354.00 9999.00
1969 507.50 407.50 515.50 874.50 1136.31 b 1273.50 1522.00 1540.50 1331.50 925.50 637.50 b 474.50 9999.00
1970 380.50 550.50 526.50 676.00 1157.50 1346.50 1498.50 1457.50 1166.50 823.00 676.00 435.50 9999.00
1971 428.00 428.50 693.50 760.00 987.50 1305.50 1529.50 1313.50 1210.50 816.50 593.50 313.00 9999.00
1972 415.00 548.00 853.00 864.50 1108.00 1313.50 1540.00 1404.00 1230.00 945.00 491.50 390.00 9999.00
1973 371.50 462.50 460.00 719.50 1149.50 1308.50 1478.50 1498.50 1323.50 1070.50 664.00 481.00 9999.00
1974 433.00 447.00 716.50 834.00 1146.50 1457.00 1431.50 1403.50 1223.50 1006.00 438.50 h 303.59 b 9999.00
1975 393.50 394.50 587.81 e 690.00 d 1044.00 1304.50 1426.00 1511.50 1272.50 977.50 628.00 442.00 9999.00
1976 450.50 577.50 628.00 800.50 1131.50 1365.00 1430.50 1504.00 1205.50 917.00 636.00 444.00 9999.00
1977 368.00 465.50 514.50 861.00 1022.00 1403.50 1549.50 1523.50 1327.50 1072.50 689.00 592.50 9999.00
1978 455.00 426.50 749.00 819.00 1084.50 1422.00 1556.50 1469.50 1306.50 1107.00 599.00 327.00 9999.00
1979 267.50 417.00 580.50 838.00 1068.00 1359.50 1519.50 1410.00 1379.50 1062.00 560.00 545.50 9999.00
1980 501.50 562.00 618.00 833.50 1040.50 1414.50 1572.50 1458.00 1320.00 1035.00 712.50 671.50 9999.00
1981 568.00 567.50 638.00 989.50 1111.00 1399.50 1440.50 1509.00 1314.50 953.00 718.50 537.50 9999.00
1982 391.00 509.50 643.50 911.50 1131.00 1335.00 1427.50 1429.50 1266.00 922.00 620.00 402.00 9999.00
1983 466.50 449.50 604.00 670.00 1089.00 1295.00 1509.00 1432.50 1318.50 986.00 584.50 483.50 9999.00
1984 428.50 461.50 730.50 788.00 1274.00 1327.00 1395.50 1384.50 1303.50 873.00 549.50 386.00 9999.00
1985 380.00 434.00 658.50 922.00 1169.00 1420.00 1509.00 1471.50 1184.50 1010.00 542.00 465.50 9999.00
1986 651.50 539.50 780.50 908.50 1195.00 1435.00 1408.00 1410.50 1199.50 953.00 654.00 431.00 9999.00
1987 402.50 479.50 614.50 945.00 1107.50 1402.00 1543.50 1439.00 1230.50 1119.50 645.50 389.50 9999.00
1988 411.00 565.00 701.00 852.00 1156.50 1425.50 1519.00 1464.50 1268.00 1145.00 622.50 430.50 9999.00
1989 364.50 571.50 840.00 1074.50 1222.50 1406.50 1566.00 1465.00 1354.50 987.50 680.50 437.50 9999.00
1990 376.50 379.50 678.00 910.50 1125.00 1486.50 1396.50 1328.00 1276.00 1041.50 685.50 381.00 9999.00
1991 413.00 581.00 534.00 830.00 1101.50 1303.50 1506.50 1474.00 1282.00 1087.00 586.50 469.50 9999.00
1992 400.00 566.50 646.00 1020.00 1202.00 1413.50 1507.50 1458.00 1372.00 1120.50 546.00 418.50 9999.00
1993 556.00 482.00 760.50 954.50 1282.50 1437.00 1563.00 1479.50 1321.00 1079.50 710.50 470.50 9999.00
1994 466.50 482.00 753.50 918.50 1171.00 1574.00 1654.00 1635.50 1418.00 1071.00 594.50 514.00 9999.00
1995 477.50 654.50 756.50 795.50 1102.00 1349.00 1582.50 1525.50 1357.50 1087.50 764.00 500.00 9999.00
1996 495.50 608.50 747.00 957.00 1309.00 1498.50 1565.50 1469.00 1170.50 979.50 666.00 460.00 9999.00
1997 417.00 447.50 862.00 0.00 z 1363.50 1448.50 1634.50 1584.00 0.00 z 985.50 0.00 z 0.00 z 8742.50
1998 408.00 299.92 b 562.00 674.00 1050.50 1271.50 1454.50 1444.00 1285.50 971.50 613.50 380.50 9999.00
1999 440.00 482.50 682.00 a 644.44 c 1103.50 1330.00 1363.00 1403.50 1272.50 1057.00 788.33 c 350.41 c 9999.00
2000 481.61 c 542.00 626.00 960.50 1274.32 c 1357.50 1511.00 1403.50 1344.50 887.00 399.00 449.00 9999.00
2001 322.00 383.00 678.50 836.50 1251.50 1397.50 1448.00 1446.00 1366.00 1046.50 713.50 318.50 9999.00
2002 400.50 502.00 634.00 983.00 1152.00 1450.00 1471.00 1441.00 1301.00 940.00 658.00 365.00 9999.00
2003 578.00 438.00 644.00 811.50 1201.00 1396.00 1547.00 1460.50 1311.00 1127.00 598.00 445.50 9999.00
2004 438.50 358.00 862.50 836.00 1213.00 1380.50 1472.00 1423.00 1252.00 948.00 521.50 429.00 9999.00
2005 479.50 477.50 639.50 866.50 1189.00 0.00 z 1567.50 1385.50 1325.00 1040.50 0.00 z 469.50 9440.00
2006 474.50 540.50 623.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 705.50 363.50 2707.00
2007 0.00 z 475.50 765.50 893.00 1222.00 1403.50 1477.50 1475.50 1311.00 1043.00 788.50 312.50 9999.00
2008 397.50 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 z 397.50
Period of Record Statistics
MEAN 363.07 413.33 595.68 780.48 1060.41 1298.64 1457.60 1400.56 1231.61 942.70 575.49 379.53 10492.09
S.D. 100.30 100.38 107.80 104.68 110.58 89.86 64.55 66.76 70.53 92.53 92.19 89.18 736.37
SKEW -0.09 -0.01 0.24 0.20 -0.01 0.39 0.28 0.58 0.25 0.00 -0.12 0.20 0.33
MAX 651.50 654.50 862.50 1074.50 1363.50 1574.00 1654.00 1635.50 1418.00 1145.00 788.50 671.50 12252.50
MIN 98.00 163.50 390.08 550.00 762.50 1131.50 1290.12 1265.00 1099.50 716.44 330.00 179.50 9152.63
NO YRS 111 112 113 111 110 108 112 112 112 112 107 110 99