IMPERIAL, CALIFORNIA

Monthly Total Growing Degree Days

(044223)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1901 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 757.50 506.00 1263.50
1902 479.00 558.50 664.50 1048.00 1301.50 1497.00 1492.50 1552.00 1370.50 1058.00 551.00 398.00 9999.00
1903 510.00 441.50 904.50 1028.00 1317.00 1610.00 1703.00 1681.50 1363.00 1067.50 0.00 z 414.50 9999.00
1904 386.50 624.50 896.50 919.50 1165.50 1406.00 1528.50 1585.50 1297.00 925.87 a 748.00 482.50 9999.00
1905 539.00 457.00 762.50 852.50 1042.00 1316.00 1575.83 a 1345.50 f 1343.00 1000.50 632.50 397.50 9918.33
1906 425.00 629.00 680.93 b 877.50 1057.00 1293.50 1595.00 1556.09 c 1299.00 1047.50 618.00 416.00 9999.00
1907 374.00 635.00 675.28 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 676.00 0.00 z 2360.28
1908 452.50 484.50 718.00 901.50 1054.00 b 1252.50 1649.09 c 1556.41 b 0.00 z 0.00 z 0.00 z 0.00 z 8068.50
1909 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 0.00 z 0.00
1910 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 591.00 591.00
1911 486.50 408.50 818.50 892.00 1109.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3714.50
1912 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 0.00 z 0.00
1913 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 0.00 z 0.00
1914 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 0.00 z 0.00
1915 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 0.00 z 0.00
1916 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 0.00 z 0.00
1917 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 0.00 z 0.00
1918 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 0.00 z 0.00
1919 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 0.00 z 0.00
1920 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 0.00 z 0.00
1921 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 0.00 z 0.00
1922 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 0.00 z 0.00
1923 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 0.00 z 0.00
1924 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 0.00 z 0.00
1925 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 944.47 a 613.00 498.50 2055.97
1926 430.50 599.50 834.00 988.50 549.50 q 1403.08 d 1557.48 b 1530.50 1283.89 c 1029.41 b 700.00 375.00 9999.00
1927 474.50 548.00 688.50 922.50 1199.00 1319.50 1603.50 1583.77 c 1282.50 1046.25 a 697.22 c 411.50 9999.00
1928 503.50 509.50 805.00 889.29 b 1175.00 1352.00 1557.00 1499.50 1367.00 1000.50 643.00 411.00 9999.00
1929 336.50 422.50 680.00 781.50 1173.50 1331.38 a 1507.00 1569.50 1218.50 0.00 z 576.50 557.50 9999.00
1930 399.00 588.00 692.50 956.00 983.50 1296.00 1552.00 1475.00 1190.50 937.00 630.00 355.50 9999.00
1931 459.50 519.00 758.00 975.50 1238.50 1339.50 1712.00 1548.50 1290.00 1024.50 541.50 343.50 9999.00
1932 0.00 z 499.50 739.00 878.00 1129.50 1325.00 1541.50 1546.50 1368.50 984.00 691.00 200.50 o 9999.00
1933 315.50 312.50 725.50 784.50 1034.00 1313.50 1640.00 1595.00 1345.50 1175.00 701.67 c 488.00 9999.00
1934 509.50 642.00 1009.50 1063.00 1310.50 1213.50 1665.00 1672.00 1394.00 1163.50 767.50 534.00 9999.00
1935 474.50 562.00 645.50 892.00 1086.00 1450.00 1551.00 1568.50 1420.50 1019.00 584.50 497.00 9999.00
1936 462.50 560.00 841.00 997.00 1257.00 1435.00 1624.50 1606.50 1308.50 1061.50 669.00 458.00 9999.00
1937 148.50 439.50 659.00 868.50 1151.00 1341.50 1691.00 1664.00 1448.50 1112.50 729.50 578.50 9999.00
1938 519.50 477.50 663.50 892.00 1174.50 1372.00 1602.50 1574.50 1415.50 1007.00 517.00 534.50 9999.00
1939 419.50 345.50 725.50 995.50 1214.50 1354.50 1617.00 1634.00 1266.00 1002.50 741.00 611.00 9999.00
1940 551.50 535.00 831.00 969.00 1324.00 1451.00 1572.00 1621.50 1327.00 1089.50 631.00 575.50 9999.00
1941 509.00 588.50 737.50 820.00 1226.50 1301.00 1598.50 1464.50 1174.50 908.00 723.50 501.50 9999.00
1942 507.50 462.00 700.00 872.00 1137.50 1367.00 1689.00 1607.00 1317.50 1051.50 698.50 547.50 9999.00
1943 485.50 576.50 838.00 963.50 1212.00 1264.50 1547.00 1514.00 1433.50 1079.00 668.50 453.50 9999.00
1944 431.50 419.50 659.00 884.00 1126.00 1198.00 1488.00 1595.50 1365.50 1112.00 628.00 495.50 9999.00
1945 456.50 518.50 630.50 855.00 1152.50 1306.50 1611.50 1555.50 1400.50 1122.50 653.50 437.00 9999.00
1946 460.50 457.00 692.00 994.00 1148.50 1427.50 1595.00 1611.50 1397.50 933.50 570.00 535.50 9999.00
1947 398.50 608.00 769.00 936.50 1230.50 1341.50 1622.00 1524.50 1426.00 1069.50 535.50 359.50 9999.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1538.50 1589.00 1410.00 1103.00 566.00 374.50 6581.00
1949 171.50 387.00 670.00 997.50 1141.00 1381.50 1573.00 1544.00 1491.50 978.00 834.50 398.00 9999.00
1950 356.50 587.00 770.50 1009.00 1100.00 1309.50 1544.50 1565.50 1283.00 1200.50 814.50 639.50 9999.00
1951 445.50 491.50 694.50 891.00 1160.00 1295.50 1593.00 1537.00 1404.00 1104.50 626.00 452.50 9999.00
1952 352.50 521.00 600.00 885.50 1289.50 1281.50 1571.50 1617.50 1442.00 1284.00 555.50 468.00 9999.00
1953 617.50 511.50 729.50 848.00 1007.00 1308.00 1650.00 1570.50 1391.50 1094.00 739.50 453.50 9999.00
1954 497.00 684.00 678.50 1036.50 1190.40 a 1303.00 1639.50 1510.50 1399.00 1131.00 808.00 488.50 9999.00
1955 367.50 425.50 731.50 841.50 1085.50 1321.00 1509.00 1578.50 1396.00 1167.00 702.50 552.50 9999.00
1956 561.50 416.00 770.50 865.50 1156.00 1411.50 1556.00 1496.00 1516.50 1040.00 661.50 516.50 9999.00
1957 454.00 665.00 773.00 893.50 1049.00 1462.00 1647.00 1559.00 1388.50 990.00 609.00 553.50 9999.00
1958 542.50 606.00 642.50 912.00 1321.50 1383.00 1588.50 1639.50 1431.50 1188.00 700.00 608.50 9999.00
1959 565.50 364.00 f 834.42 a 1029.00 1119.00 1466.00 1684.00 1569.50 1312.50 1083.50 738.00 499.00 9999.00
1960 375.50 496.50 862.50 993.00 1167.50 1487.00 1646.00 1598.00 1456.50 1090.50 680.00 462.50 9999.00
1961 559.00 585.50 753.50 968.50 1115.00 1442.50 1587.00 1585.50 1278.00 1039.00 616.00 471.50 9999.00
1962 478.00 535.00 611.50 1034.50 1037.00 1333.50 1562.50 1663.00 1414.00 1116.00 790.00 558.00 9999.00
1963 373.00 709.50 701.50 824.50 1221.00 1259.50 1584.00 1558.50 1420.00 1182.50 736.00 494.50 9999.00
1964 370.50 470.50 668.00 852.50 1123.00 1319.00 1616.00 1566.50 1312.00 1217.00 621.00 521.50 9999.00
1965 535.50 544.50 686.00 902.00 1143.00 1217.00 1568.50 1588.50 1259.00 1190.00 780.00 470.50 9999.00
1966 396.50 445.00 796.00 1007.00 1251.00 1389.00 1625.00 1631.50 1384.00 1071.50 754.50 540.50 9999.00
1967 478.00 567.00 804.50 699.00 1132.00 1282.50 1653.50 1658.00 1363.50 1168.00 834.00 409.50 9999.00
1968 487.00 738.00 804.50 884.50 1198.50 1398.50 1592.50 1505.50 1364.50 1115.00 777.00 383.00 9999.00
1969 605.50 490.50 722.50 940.50 1242.00 1286.50 1638.00 1736.50 1462.50 1007.00 742.50 547.50 9999.00
1970 473.00 605.00 745.00 808.00 1206.50 1405.00 1653.00 1660.00 1335.50 1020.50 714.00 470.00 9999.00
1971 482.50 541.00 768.00 855.00 1061.50 1325.00 1625.00 1589.50 1376.00 928.00 652.00 387.00 9999.00
1972 400.00 631.00 956.00 950.00 1188.50 1384.50 1674.50 1535.50 1328.00 993.00 614.00 441.00 9999.00
1973 411.50 545.00 646.00 855.50 1244.50 1438.00 1586.50 1581.50 1313.00 1098.50 716.00 543.50 9999.00
1974 496.00 511.50 794.00 921.00 1199.50 1481.00 1587.00 1570.50 1458.50 1110.00 725.50 425.50 9999.00
1975 466.50 493.50 669.50 711.00 1118.00 1352.50 1601.50 1605.00 1432.50 1033.50 700.50 527.50 9999.00
1976 534.50 605.00 713.00 830.50 1218.00 1405.00 1567.50 1522.50 1277.50 1078.50 774.50 512.00 9999.00
1977 516.50 651.50 644.50 966.00 1010.50 1450.50 1645.00 1595.00 1368.00 1186.00 788.50 608.00 9999.00
1978 538.50 576.50 856.00 878.00 1201.00 1525.50 1666.50 1598.50 1340.50 1232.50 689.50 403.00 9999.00
1979 390.50 529.00 748.00 956.50 1153.50 1427.50 1611.50 1510.50 1500.50 1176.50 668.50 588.50 9999.00
1980 622.50 671.50 721.00 922.50 1051.50 1421.50 1700.50 1585.50 1398.00 1135.50 745.50 664.00 9999.00
1981 648.50 610.00 753.50 986.50 1191.00 1516.00 1650.00 1671.50 1454.50 1023.00 796.00 614.00 9999.00
1982 489.50 609.00 728.50 927.50 1126.50 1283.50 1566.00 1623.50 1343.50 1047.50 656.00 476.00 9999.00
1983 588.00 577.50 780.00 799.50 1205.00 1328.00 1611.00 1543.50 1482.50 1162.50 746.00 583.50 9999.00
1984 580.00 589.00 828.00 905.50 1332.50 1372.50 1607.50 1608.00 1498.50 1017.50 700.50 453.50 9999.00
1985 463.00 493.00 732.50 1028.00 1215.00 1457.00 1653.50 1616.00 1226.50 1064.00 635.50 529.00 9999.00
1986 662.50 654.00 914.50 978.00 1231.50 1475.50 1586.00 1665.50 1260.00 1037.50 750.50 526.50 9999.00
1987 467.00 560.50 745.00 1081.00 1209.00 1443.00 1543.50 1588.00 1402.50 1220.50 708.50 415.00 9999.00
1988 480.50 636.50 818.50 920.50 1155.50 1359.00 1599.00 1572.00 1354.50 1243.50 742.50 494.00 9999.00
1989 437.50 558.00 893.00 1106.00 1221.50 1406.50 1633.00 1531.50 1378.00 1071.00 729.00 509.00 9999.00
1990 462.00 501.00 819.50 1007.50 1143.00 1419.00 1617.50 1526.50 1396.00 1098.00 706.50 356.50 9999.00
1991 462.50 680.50 625.00 903.50 1086.50 1260.00 1514.00 1579.00 1412.50 1232.50 713.50 495.00 9999.00
1992 491.00 650.00 742.00 1028.50 1233.50 1338.00 1535.00 1611.00 1439.50 1133.50 609.00 350.00 9999.00
1993 432.50 521.50 853.00 998.50 1213.00 1405.50 1532.50 1558.00 1371.50 1140.50 634.50 460.50 9999.00
1994 544.00 473.50 834.00 940.50 1113.00 1460.50 1621.50 1665.50 1431.00 1066.00 501.50 416.00 9999.00
1995 478.00 679.00 765.50 869.50 1027.00 1282.00 1598.00 1673.00 1508.00 1124.00 852.00 549.00 9999.00
1996 552.00 659.50 811.00 979.50 1260.50 1381.50 1583.50 1605.50 1327.00 1054.00 700.50 495.00 9999.00
1997 526.50 504.50 824.50 891.00 1317.50 1287.00 1501.50 1630.50 1434.00 1034.50 746.00 408.50 9999.00
1998 513.00 487.50 701.00 811.00 1018.50 1256.50 1603.50 1632.00 1343.50 996.50 649.00 447.00 9999.00
1999 517.00 525.50 675.50 750.50 1124.00 1308.50 1539.00 1546.00 1379.50 1149.00 793.50 524.00 9999.00
2000 592.00 627.50 762.50 1042.50 1298.00 1451.00 1600.50 1636.00 1394.50 1041.00 564.00 579.00 9999.00
2001 464.50 494.50 833.50 900.00 1361.00 1483.00 1600.00 1638.50 1486.00 1219.50 844.50 454.00 9999.00
2002 492.50 573.50 733.00 965.00 1187.00 1449.00 1643.00 1584.00 1446.50 1090.50 793.00 519.00 9999.00
2003 742.00 580.50 838.50 850.00 1224.00 1382.00 1676.50 1664.50 1520.00 1319.00 647.50 511.50 9999.00
2004 525.00 511.50 1014.00 993.50 1287.50 1391.50 1611.50 1609.50 1384.00 1038.50 608.00 498.50 9999.00
2005 557.50 534.50 806.50 904.00 1217.50 1336.50 1611.00 1579.00 1372.50 1114.00 787.00 571.50 9999.00
2006 563.00 621.00 713.50 912.50 1299.00 1548.50 1675.50 1588.50 1408.50 1096.50 800.50 480.50 9999.00
2007 408.00 598.00 883.50 968.00 1231.50 1420.50 1646.50 1663.00 1361.00 1094.50 793.00 374.50 9999.00
2008 414.00 547.50 787.50 882.00 1086.50 1401.50 1552.50 1523.50 1367.50 1091.00 795.50 456.00 9999.00
2009 576.50 530.00 774.00 898.00 0.00 z 0.00 z 1711.00 1605.00 1455.50 1024.50 740.50 452.00 9767.00
2010 524.00 547.00 727.00 814.50 1094.50 0.00 z 1623.00 1585.50 1397.00 1029.00 637.00 535.50 9999.00
2011 461.00 411.00 768.00 912.00 1010.50 1342.00 1589.00 1626.00 1370.50 1049.50 561.50 277.00 9999.00
2012 445.00 482.00 644.50 843.50 1179.50 1328.00 1468.50 1510.00 1349.50 1135.00 785.00 513.00 9999.00
2013 422.50 487.50 920.50 30.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 9.00 z 1830.50
Period of Record Statistics
MEAN 476.71 544.48 758.54 918.97 1170.69 1371.17 1600.84 1586.68 1375.85 1084.59 692.51 484.28 12085.45
S.D. 88.90 82.47 86.00 80.42 87.06 79.96 53.42 51.75 72.23 82.72 82.09 75.09 391.77
SKEW -0.55 -0.17 0.62 -0.17 -0.05 0.28 -0.11 0.11 -0.37 0.32 -0.22 -0.12 0.05
MAX 742.00 738.00 1014.00 1106.00 1361.00 1610.00 1712.00 1736.50 1520.00 1319.00 852.00 664.00 12956.00
MIN 148.50 312.50 600.00 699.00 983.50 1198.00 1468.50 1464.50 1174.50 908.00 501.50 277.00 9999.00
NO YRS 94 94 95 93 91 90 93 92 92 92 94 94 83