IRON MTN, CALIFORNIA

Monthly Total Growing Degree Days

(044297)

Base Temperature = 50 F

File last updated on Apr 4, 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
1935 133.00 j 288.00 352.00 627.00 817.00 1243.00 1364.50 1314.50 1118.50 704.00 251.50 170.50 8250.50
1936 158.00 203.50 575.00 832.50 1049.00 1239.50 1439.50 1371.50 1087.50 778.00 409.00 116.00 9259.00
1937 2.00 167.00 372.00 643.50 984.50 1181.00 1413.00 1412.00 1226.50 856.50 427.00 301.50 8986.50
1938 244.00 182.50 308.00 655.00 925.00 1173.50 1379.00 1351.00 1182.50 726.00 255.50 203.00 8585.00
1939 108.00 69.50 441.50 716.00 975.00 1160.00 1390.50 1410.00 950.50 710.50 441.50 255.50 8628.50
1940 201.00 223.50 533.00 671.00 1072.00 1281.00 1365.50 1392.00 1011.00 789.00 306.00 232.00 9077.00
1941 107.00 285.00 385.50 484.50 945.50 1070.00 1357.00 1218.00 905.00 613.00 365.50 146.00 7882.00
1942 193.00 148.50 379.00 617.00 868.50 1152.50 1471.50 1318.50 1051.50 796.00 434.50 207.50 8638.00
1943 168.50 288.00 462.50 692.00 987.50 1014.50 1388.50 1290.00 1158.50 798.00 379.00 176.00 8803.00
1944 92.50 g 122.50 337.00 557.00 877.50 976.55 a 1295.00 1337.00 1091.00 804.00 263.00 174.00 7834.55
1945 138.50 220.00 279.00 590.50 949.50 1089.50 1395.50 1307.00 1145.50 821.50 350.50 95.00 8382.00
1946 159.00 143.50 416.00 762.50 933.00 1216.50 1340.50 1352.50 1139.50 616.00 223.50 234.00 8536.50
1947 108.50 325.00 516.00 690.00 1038.50 1122.00 1385.00 1246.50 1159.50 764.50 248.50 88.50 8692.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1322.50 1298.50 1096.50 779.50 174.50 j 54.50 4551.50
1949 3.00 101.50 335.00 692.00 849.50 1174.50 1377.43 a 1289.50 1200.50 688.00 549.00 130.00 8389.93
1950 86.50 288.00 465.50 769.50 890.00 1115.00 1343.50 1343.00 1050.00 894.50 497.00 337.00 9079.50
1951 131.00 193.00 402.50 622.00 910.00 1100.00 1397.50 1271.50 1146.00 750.50 298.00 66.50 8288.50
1952 57.50 194.00 233.00 630.00 1036.00 1056.00 1339.00 1408.00 1155.00 962.00 300.00 108.50 8479.00
1953 273.00 216.50 439.50 604.50 698.00 1105.50 1454.50 1344.00 1163.00 780.00 453.00 152.00 8683.50
1954 98.00 428.50 336.50 794.50 996.00 1109.50 1406.88 a 1268.00 1138.00 843.00 502.50 156.00 9077.38
1955 46.50 131.00 390.00 527.50 831.50 1110.00 1299.50 1271.50 1123.00 893.00 381.50 218.00 8223.00
1956 199.50 100.00 439.50 616.50 924.50 1209.00 1363.00 1291.50 1231.50 719.00 346.00 211.50 8651.50
1957 91.00 351.50 466.50 626.50 801.00 1262.00 1413.50 1312.50 1117.00 658.50 240.50 179.50 8520.00
1958 152.00 262.50 258.50 621.00 1080.50 1197.50 1377.00 1399.00 1177.76 a 911.50 400.00 287.50 9124.76
1959 218.00 149.00 521.00 784.00 894.50 1276.50 1489.00 1296.00 1065.50 824.00 410.50 166.00 9094.00
1960 67.50 125.00 534.50 708.00 917.00 1311.50 1449.00 1367.50 1170.50 745.00 358.00 138.00 8891.50
1961 218.00 256.00 429.00 684.00 896.00 1297.00 1421.00 1299.50 963.50 730.00 258.00 101.50 8553.50
1962 175.00 237.50 247.50 832.00 822.50 1141.50 1386.50 1411.00 1153.00 799.50 488.00 240.50 8934.50
1963 89.00 396.00 380.50 492.00 953.50 1011.00 1392.50 1325.50 1113.50 840.50 389.50 171.00 8554.50
1964 68.50 126.00 304.50 563.50 839.50 1088.50 1379.00 1329.00 1058.00 958.50 276.00 160.00 8151.00
1965 196.50 244.00 332.50 568.50 843.00 963.00 1343.00 1348.00 962.50 883.00 412.50 124.00 8220.50
1966 67.50 102.00 431.00 739.00 1010.50 1177.24 a 1373.50 1399.50 1117.00 752.50 414.00 208.50 8792.24
1967 162.50 255.00 443.50 388.00 902.50 1061.00 1449.50 1436.50 1093.50 867.50 498.00 102.09 b 8659.59
1968 149.00 389.00 470.00 547.50 900.00 1174.00 1361.93 a 1215.00 1112.00 782.50 401.00 64.50 8566.43
1969 201.50 161.00 354.50 631.00 995.00 1087.50 1355.50 1479.50 1146.50 669.00 423.00 195.00 8699.00
1970 125.00 304.50 383.50 461.50 943.00 1174.00 1370.00 1362.00 1022.50 689.00 400.50 95.00 8330.50
1971 215.00 262.50 427.50 589.00 739.50 1132.50 1444.00 1271.00 1065.50 575.00 296.00 55.50 8073.00
1972 81.50 314.00 677.50 676.00 921.00 1152.00 1438.00 1279.00 1043.00 590.00 245.50 108.50 8526.00
1973 68.00 191.50 0.00 z 592.00 1026.50 1269.00 1437.50 1336.00 1062.50 785.50 332.50 214.00 8315.00
1974 94.00 215.50 483.00 614.50 961.00 1296.00 1347.00 1325.00 1182.00 803.00 394.50 98.00 8813.50
1975 148.00 160.50 332.00 414.50 886.00 1161.00 1398.50 1318.00 1151.50 726.50 375.50 238.00 8310.00
1976 232.00 299.50 379.50 523.50 975.00 1176.00 1352.50 1240.50 968.28 a 726.50 424.50 139.00 8436.78
1977 128.00 325.50 271.50 688.00 699.50 1246.50 1429.00 1358.50 1076.50 833.00 459.00 262.50 8777.50
1978 118.00 235.50 498.00 568.50 908.00 1252.50 1433.50 1307.50 1036.50 906.50 293.50 37.00 8595.00
1979 21.00 125.50 344.00 611.00 906.00 1192.50 1342.50 1221.50 1192.50 820.00 304.00 196.00 8276.50
1980 205.50 298.50 351.00 611.00 748.50 1134.00 1437.50 1317.50 1112.50 827.50 448.50 335.00 8827.00
1981 293.00 277.00 434.00 768.00 921.50 1331.00 1445.50 1391.00 1152.86 b 691.00 465.00 232.50 9402.36
1982 122.00 293.50 382.50 640.50 895.00 1051.50 1274.50 1280.50 992.50 684.50 75.50 y 14.50 u 7617.00
1983 189.50 235.00 410.50 481.00 935.50 1111.50 1333.50 1219.00 1172.00 764.00 386.00 196.00 8433.50
1984 217.50 258.50 506.50 613.50 1101.50 1142.50 1339.00 1302.50 1165.50 650.00 319.50 76.00 8692.50
1985 117.50 244.50 377.00 772.00 976.50 1259.00 1436.50 1357.50 897.50 735.50 303.50 213.50 8690.50
1986 310.50 305.50 569.00 628.50 905.00 1254.00 1287.50 1392.00 912.00 700.00 430.50 146.00 8840.50
1987 130.00 278.00 406.50 803.50 972.50 1272.50 1322.00 1355.50 1104.50 843.00 318.00 80.50 8886.50
1988 125.00 287.50 477.00 629.00 965.13 a 1171.00 1462.50 1316.50 1094.00 987.50 409.00 196.00 9120.13
1989 146.00 271.00 602.00 898.00 1004.50 1213.50 1460.00 1306.00 1138.00 0.00 z 488.00 215.00 8742.00
1990 144.50 199.50 531.50 726.50 924.00 1218.62 a 1399.00 1283.00 1127.50 828.50 420.50 88.50 8891.62
1991 94.00 400.00 230.00 576.21 a 815.00 1050.50 1323.50 1289.00 1113.50 892.50 386.38 a 127.00 8297.59
1992 150.50 314.00 411.00 745.00 1003.00 1134.50 1311.00 1358.00 1141.00 798.00 321.50 35.00 8722.50
1993 109.50 194.50 517.00 592.50 964.00 1083.00 1255.50 1281.50 1064.00 761.50 206.38 a 75.50 8104.88
1994 173.00 172.00 551.50 749.50 914.50 1304.00 1384.50 1417.00 1164.50 706.00 186.00 118.50 8841.00
1995 139.00 398.00 457.50 591.50 811.00 1120.00 1423.00 1486.00 1242.00 837.50 567.00 218.00 9290.50
1996 216.50 382.50 520.00 754.00 1060.00 1250.00 1496.50 1427.00 1109.00 807.50 445.00 172.50 9640.50
1997 196.00 270.50 626.00 680.50 1204.50 1170.00 1329.50 1009.00 i 1182.50 759.00 427.50 114.50 7960.50
1998 194.00 159.50 421.50 533.00 801.00 0.00 z 1454.00 1434.50 1071.50 727.00 374.00 169.50 7339.50
1999 242.50 0.00 z 391.00 515.36 b 915.50 1171.50 1339.00 1341.50 1126.50 882.95 c 482.50 209.00 8617.30
2000 263.50 298.12 d 444.00 815.89 b 1085.50 1260.52 a 1403.00 1366.14 b 1111.73 d 718.68 a 223.93 b 226.50 9217.51
2001 118.32 a 157.77 b 517.50 602.50 1158.22 b 1269.31 a 1349.00 1373.50 1183.00 860.77 a 486.21 a 73.07 c 9149.17
2002 158.00 290.00 429.00 751.50 972.00 1289.00 1473.00 1359.00 1158.50 744.50 478.50 157.00 9260.00
2003 354.00 264.50 472.50 560.77 d 1027.00 1230.00 0.00 z 1406.92 e 1225.00 1002.50 272.50 169.50 7985.19
2004 182.50 188.50 705.00 710.50 1019.50 1232.50 1429.50 1364.00 1094.00 700.50 271.50 163.50 9061.50
2005 123.50 j 209.00 472.00 611.50 1015.50 1168.50 1491.00 1359.50 1068.50 803.00 476.00 164.50 8839.00
2006 190.50 309.50 331.00 607.50 1111.50 1334.00 1493.50 1376.00 1096.50 740.50 477.00 130.50 9198.00
2007 122.50 328.50 601.00 711.00 1079.00 1246.00 1470.50 1424.00 1104.50 791.00 542.00 96.00 9516.00
2008 96.00 167.50 i 495.00 702.00 870.50 1281.50 1344.50 1401.00 1177.00 854.50 425.50 f 150.50 8372.50
2009 231.00 g 237.00 492.12 c 668.50 970.00 f 1120.50 1509.04 c 1368.77 e 1243.00 711.00 464.50 106.00 7920.43
2010 171.50 258.50 398.00 565.50 828.00 1215.00 1471.50 1377.00 1154.00 809.62 a 406.50 237.50 8892.62
2011 219.58 a 136.50 i 395.00 h 684.31 a 871.00 1171.55 a 1374.52 c 1120.00 g 1164.64 b 825.78 b 326.50 70.02 b 6707.90
2012 249.00 295.37 b 478.84 c 723.75 b 1093.00 1264.00 1359.83 e 1412.64 b 1211.38 a 677.50 f 307.00 k 195.54 e 8283.34
2013 151.50 g 205.50 643.50 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 849.00
Period of Record Statistics
MEAN 153.57 241.20 434.48 646.01 938.79 1177.95 1391.63 1340.62 1110.98 781.70 378.19 160.70 8733.63
S.D. 69.74 80.93 101.18 100.13 100.89 85.61 57.53 60.37 77.02 88.32 90.41 68.00 373.74
SKEW 0.26 0.08 0.29 -0.03 0.01 -0.31 0.00 0.00 -0.84 0.12 -0.15 0.32 0.13
MAX 354.00 428.50 705.00 898.00 1204.50 1334.00 1509.04 1486.00 1243.00 1002.50 567.00 337.00 9640.50
MIN 2.00 69.50 230.00 388.00 698.00 963.00 1255.50 1215.00 897.50 575.00 186.00 35.00 7882.00
NO YRS 73 75 76 77 76 76 77 76 78 76 74 77 63