VALLECITO DAM, COLORADO

Monthly Total Heating Degree Days

(058582)

Base Temperature = 65 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
1917 0.00 z 0.00 z 0.00 z 345.50 q 731.08 a 349.50 94.00 228.00 355.00 736.00 888.00 1168.00 4549.58
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 0.00 z 0.00 z 0.00 z 0.00
1926 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
1927 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
1928 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
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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
1940 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
1941 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
1942 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 267.50 542.50 744.00 1035.92 a 2589.92
1943 1182.00 1003.50 965.50 509.50 408.50 211.50 44.00 24.50 214.50 551.00 791.50 1155.00 7061.00
1944 1309.50 1158.00 1112.00 838.00 526.00 297.41 a 72.50 85.50 261.00 543.00 988.50 1241.50 8432.91
1945 1393.50 1072.50 1160.50 832.50 510.50 333.00 46.00 32.50 276.00 533.00 925.00 1369.00 8484.00
1946 1396.50 1129.50 960.50 225.50 s 577.00 163.00 29.00 52.00 218.00 655.00 926.50 1004.00 7111.00
1947 1408.00 974.50 941.00 715.00 412.50 275.50 8.50 80.50 193.00 513.00 1045.50 1225.50 7792.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 59.50 188.50 564.00 1044.00 1235.50 3091.50
1949 1441.50 1305.50 1034.50 684.50 511.50 252.00 47.50 87.00 187.00 626.00 693.00 1239.50 8109.50
1950 1323.50 979.50 958.00 630.50 519.50 196.00 88.00 82.50 318.00 381.50 800.00 1005.00 7282.00
1951 1287.00 1104.00 1025.00 706.50 460.50 229.50 4.50 62.00 230.00 600.50 1007.00 1382.00 8098.50
1952 1387.00 1292.00 1270.50 694.00 466.00 173.00 58.00 47.02 a 207.50 442.50 1033.00 1297.50 8368.02
1953 1233.50 1173.00 965.50 758.50 605.00 138.50 23.00 83.50 176.50 548.00 833.50 1311.00 7849.50
1954 1219.50 921.50 1031.50 543.00 439.50 211.00 32.00 106.50 209.50 475.00 749.00 1156.00 7094.00
1955 1418.50 1318.00 1037.50 778.00 553.50 267.50 77.00 47.50 209.00 483.00 924.50 1179.50 8293.50
1956 1088.50 1308.00 984.50 713.50 394.50 104.00 51.00 122.00 135.00 554.50 1005.00 1267.50 7728.00
1957 1271.00 955.00 1015.00 811.50 629.50 236.50 79.00 112.00 309.00 628.50 1092.00 1151.50 8290.50
1958 1305.50 1034.50 1176.50 819.00 398.50 155.00 68.50 35.00 232.00 524.50 838.00 964.00 7551.00
1959 1194.00 1146.50 987.00 660.00 461.50 99.00 16.00 66.50 282.00 610.00 1000.50 1072.00 7595.00
1960 1471.50 1380.00 986.00 657.50 512.50 164.00 43.50 48.50 183.00 619.00 863.00 1236.00 8164.50
1961 1339.00 1093.00 1010.50 748.50 439.68 a 143.50 49.00 64.07 a 388.50 613.00 989.50 1376.50 8254.75
1962 1339.50 1038.00 1199.00 621.50 513.50 236.50 60.50 78.00 247.00 549.00 810.50 1073.50 7766.50
1963 1518.00 1021.50 1064.50 724.50 377.50 237.50 20.50 83.50 186.50 435.00 847.00 1236.00 7752.00
1964 1411.50 1363.50 1229.50 809.00 481.50 244.00 25.50 143.00 324.00 508.00 964.00 1322.00 8825.50
1965 1294.00 1205.00 1170.00 722.00 573.00 334.00 55.00 120.50 394.50 521.50 802.50 1132.00 8324.00
1966 1472.50 1330.00 991.50 674.50 415.00 237.00 17.00 95.00 250.50 540.00 786.00 1200.50 8009.50
1967 1345.00 1063.50 837.50 717.50 508.00 309.00 31.00 146.00 286.50 528.50 819.50 1355.50 7947.50
1968 1327.00 1090.00 1013.00 811.00 553.00 201.50 68.00 192.50 317.50 541.00 956.50 1341.50 8412.50
1969 1224.00 1188.00 1210.00 658.00 420.50 313.50 49.50 43.50 273.50 743.00 910.00 1082.50 8116.00
1970 1288.50 915.00 1108.50 896.00 462.50 289.50 47.50 50.00 367.00 758.00 930.00 1242.50 8355.00
1971 1342.00 1099.00 994.00 738.00 581.50 182.50 62.00 103.00 345.50 695.50 973.00 1309.50 8425.50
1972 1300.00 1025.00 765.00 667.50 463.50 173.50 30.00 110.00 287.00 574.50 1127.50 1358.50 7882.00
1973 1442.50 1135.00 1143.50 915.50 552.50 291.00 127.00 123.00 385.50 596.00 895.50 1231.00 8838.00
1974 1444.50 1297.00 893.00 790.00 429.50 141.50 95.50 179.00 303.50 596.00 962.00 1341.00 8472.50
1975 1468.50 1261.00 1117.00 927.00 623.00 333.50 96.50 143.00 340.00 627.50 962.00 1244.50 9143.50
1976 1382.50 1063.00 1084.00 737.50 507.50 258.50 75.00 161.50 316.50 687.50 898.00 1179.50 8351.00
1977 1501.50 1055.00 1112.50 660.50 538.50 115.50 36.50 61.50 257.00 531.50 886.00 1112.50 7868.50
1978 1315.00 1175.00 931.50 681.50 597.00 193.97 a 44.00 101.00 260.00 479.50 909.00 1451.50 8138.97
1979 1560.00 1242.50 1136.50 794.00 526.00 243.50 61.50 157.00 205.00 479.00 1092.50 1098.00 8595.50
1980 1247.00 1118.50 1163.50 790.50 601.00 190.00 16.50 116.00 257.50 609.00 845.00 938.50 7893.00
1981 1013.50 930.00 1010.00 592.50 507.50 135.00 33.50 86.50 240.00 638.50 797.00 1189.50 7173.50
1982 1418.00 1175.50 1037.50 728.00 562.00 278.00 71.50 57.50 290.50 676.00 963.50 1255.50 8513.50
1983 1214.00 1075.50 1010.50 889.00 569.50 302.00 63.00 46.50 184.50 562.50 920.50 1242.00 8079.50
1984 1418.50 1230.50 990.50 785.50 334.50 239.50 0.00 z 0.00 z 235.50 784.50 922.00 1123.00 8064.00
1985 1322.00 1194.50 1001.82 a 637.00 497.00 180.00 62.50 75.00 412.50 600.00 995.50 1239.50 8217.32
1986 1113.00 978.00 835.00 696.00 501.68 a 203.00 133.00 87.50 429.50 688.50 935.00 1146.00 7746.18
1987 1351.50 1046.50 1080.00 665.00 524.00 191.50 111.50 136.00 321.50 530.00 967.50 1326.00 8251.00
1988 1483.00 1126.00 1047.00 680.00 511.00 167.50 70.50 134.50 365.50 518.50 989.00 1260.00 8352.50
1989 1419.50 1106.00 858.00 584.50 409.50 227.00 46.00 118.50 253.00 633.00 903.62 a 1283.50 7842.12
1990 1517.50 1214.00 1025.50 741.00 642.00 242.50 201.50 278.00 351.50 733.00 1005.00 1565.00 9516.50
1991 1542.50 1074.50 1168.00 874.50 618.50 374.00 170.00 183.00 402.50 681.00 1124.50 1315.50 9528.50
1992 1512.50 1189.00 1015.50 669.00 528.50 367.50 237.50 257.50 406.00 641.00 1193.50 1476.00 9493.50
1993 1355.50 1200.50 1067.00 835.50 564.00 351.00 168.00 223.50 465.50 777.00 1144.50 1358.50 9510.50
1994 1332.00 1329.50 963.00 812.00 573.50 207.50 135.00 143.00 369.00 790.00 1165.00 1165.00 8984.50
1995 1367.50 892.00 953.00 810.00 619.50 328.50 66.00 o 28.50 273.50 610.00 833.00 1146.00 7861.50
1996 1340.50 994.50 986.00 685.00 354.00 113.00 35.00 89.00 346.50 726.50 942.00 1291.50 7903.50
1997 1394.50 1161.00 902.50 813.00 491.50 261.00 76.00 108.00 229.00 679.50 950.00 1254.00 8320.00
1998 1297.50 1207.50 1003.00 852.00 488.00 292.00 18.50 43.00 164.50 633.00 905.00 1146.00 8050.00
1999 1109.00 972.50 796.50 878.50 569.50 272.00 55.00 109.00 318.50 540.00 756.00 1171.00 7547.50
2000 1193.00 1002.50 961.00 602.00 347.50 106.00 0.00 z 30.00 0.00 z 607.50 1163.50 1221.00 7234.00
2001 1392.50 1145.50 973.50 678.00 362.00 153.50 45.50 98.00 214.00 530.50 860.50 1305.50 7759.00
2002 1335.50 1117.50 976.00 579.00 402.50 57.00 j 5.50 39.50 229.00 659.50 893.50 1291.00 7528.50
2003 0.00 z 1040.50 992.00 692.50 405.50 183.50 2.00 28.50 268.50 454.50 995.50 1200.50 6263.50
2004 1388.50 1332.50 802.50 662.00 449.50 175.00 89.00 130.00 324.00 645.50 930.50 1205.50 8134.50
2005 1179.50 1070.50 1054.00 718.00 432.50 241.50 11.50 80.50 253.00 573.00 861.00 1217.00 7692.00
2006 1238.00 1044.00 1059.50 639.50 378.00 118.00 38.50 94.00 433.00 666.00 870.50 1232.50 7811.50
2007 1408.50 1068.00 874.00 680.50 478.00 158.00 26.50 28.50 258.00 606.00 813.50 1368.50 7768.00
2008 1588.00 1266.00 1061.50 764.50 526.50 213.50 42.00 54.00 300.00 599.50 842.00 1275.00 8532.50
2009 1283.50 1089.00 924.00 748.00 360.50 287.00 38.00 97.50 288.00 758.00 830.50 1483.50 8187.50
2010 1390.00 1253.50 1106.00 761.00 542.50 156.00 44.50 66.00 213.50 531.50 1022.00 1067.50 8154.00
2011 1367.00 1233.50 907.00 674.50 581.50 180.50 18.00 16.50 227.50 595.50 943.50 1234.50 7979.50
2012 1184.00 1186.50 943.00 561.00 406.00 76.00 18.00 28.50 211.00 539.00 817.00 1255.50 7225.50
2013 1485.50 1286.50 962.00 40.50 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 3734.00
Period of Record Statistics
MEAN 1345.63 1132.39 1016.17 726.83 497.43 221.83 59.96 96.14 280.61 596.56 927.96 1231.03 8156.19
S.D. 117.80 120.86 105.06 92.77 83.59 72.79 46.05 56.18 74.23 89.24 108.35 119.42 555.23
SKEW -0.39 0.11 0.04 0.07 0.10 0.16 1.69 1.11 0.43 0.22 0.38 0.03 0.59
MAX 1588.00 1380.00 1270.50 927.00 731.08 374.00 237.50 278.00 465.50 790.00 1193.50 1565.00 9528.50
MIN 1013.50 892.00 765.00 509.50 334.50 76.00 2.00 16.50 135.00 381.50 693.00 938.50 7061.00
NO YRS 69 70 70 68 70 69 67 70 71 72 72 72 63