MOUNT SHASTA, CALIFORNIA

Monthly Total Heating Degree Days

(045983)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201012
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 86.50 86.00 234.00 441.50 773.50 1147.00 2768.50
1949 1278.50 940.50 837.00 410.00 315.50 142.00 25.00 57.50 136.50 487.00 485.50 967.00 6082.00
1950 1172.50 752.50 794.50 550.00 316.50 206.50 11.00 32.00 169.00 449.50 611.50 746.50 5812.00
1951 1020.00 785.00 786.50 420.00 370.50 88.50 24.50 42.00 66.50 477.50 734.50 1046.50 5862.00
1952 1091.00 838.50 856.50 471.50 325.50 273.00 8.00 19.00 90.00 237.00 778.50 1018.00 6006.50
1953 814.00 723.50 772.00 593.00 558.50 295.50 8.00 90.00 73.00 434.00 655.50 825.00 5842.00
1954 971.50 671.00 804.50 469.50 278.50 272.50 30.50 137.50 245.50 463.50 635.50 977.00 5957.00
1955 1056.00 841.00 791.50 762.50 366.50 172.00 112.50 7.50 197.00 369.50 803.00 901.00 6380.00
1956 944.00 943.00 757.50 514.00 349.50 196.50 34.50 63.50 154.50 553.50 659.50 890.50 6060.50
1957 1168.50 724.00 739.00 549.50 391.00 110.00 33.50 95.00 130.50 580.00 799.00 862.00 6182.00
1958 915.00 693.50 889.50 596.00 249.50 187.50 25.50 0.00 164.50 279.00 677.00 679.00 5356.00
1959 870.50 813.50 662.50 429.50 449.50 123.50 19.00 43.50 231.00 340.00 601.50 871.50 5455.50
1960 989.50 820.50 660.00 604.50 473.00 44.00 4.00 67.00 52.50 391.00 770.00 853.00 5729.00
1961 790.00 704.50 810.50 536.50 464.00 95.00 24.50 12.00 221.50 396.00 760.50 956.00 5771.00
1962 1005.50 806.00 822.50 420.50 448.00 140.00 21.00 54.00 100.50 426.00 656.50 789.50 5690.00
1963 925.00 579.00 790.00 748.00 298.00 236.00 82.00 47.00 106.50 441.50 738.50 824.00 5815.50
1964 998.50 802.50 814.50 591.50 451.50 238.00 40.00 62.50 197.50 310.00 812.50 902.00 6221.00
1965 893.00 714.50 674.00 589.50 412.50 189.50 30.00 58.50 214.00 257.00 700.00 973.50 5706.00
1966 996.50 855.00 705.00 432.50 234.00 168.00 74.00 46.00 135.00 389.00 708.50 868.00 5611.50
1967 903.00 701.00 848.00 850.00 351.00 168.50 3.50 2.50 57.50 437.50 590.00 1078.00 5990.50
1968 991.00 668.50 677.50 553.00 385.50 143.00 6.50 148.50 145.00 460.50 742.50 1044.50 5966.00
1969 1062.00 909.50 783.00 599.50 218.00 120.00 15.00 16.00 130.00 563.00 651.00 838.00 5905.00
1970 866.50 666.50 719.00 673.50 294.50 158.00 4.00 18.50 203.00 463.50 683.50 1070.00 5820.50
1971 917.50 745.50 841.00 629.00 421.50 186.00 33.50 24.50 234.00 541.00 753.00 1106.00 6432.50
1972 1037.50 759.00 606.00 634.00 302.00 113.00 14.50 67.50 242.00 465.00 781.50 1102.00 6124.00
1973 1027.00 729.50 838.00 495.50 235.00 115.50 14.00 57.50 171.50 476.00 827.00 878.50 5865.00
1974 1017.00 816.00 767.50 624.50 329.00 79.00 81.00 40.50 52.50 407.00 701.00 933.50 5848.50
1975 953.50 860.00 867.50 757.00 328.00 155.50 54.00 87.50 39.50 528.50 819.50 874.50 6325.00
1976 911.00 819.50 790.00 646.50 279.50 206.50 23.50 150.00 130.50 386.00 607.00 856.50 5806.50
1977 1061.50 671.00 840.50 494.50 568.00 72.50 23.00 45.50 249.00 468.50 769.00 881.00 6144.00
1978 839.00 736.00 623.00 659.50 443.50 190.50 49.50 117.50 303.00 352.50 845.50 1075.00 6234.50
1979 1056.00 849.00 700.00 631.50 340.50 149.50 46.50 102.50 100.00 409.50 805.00 833.00 6023.00
1980 890.50 696.00 806.00 531.50 389.50 297.00 56.50 48.00 158.00 398.50 684.50 809.00 5765.00
1981 794.00 717.00 754.50 495.00 363.00 127.50 46.50 23.00 158.50 526.00 667.50 841.50 5514.00
1982 1050.50 771.50 832.50 675.00 332.50 183.50 86.00 39.00 267.50 491.50 818.50 976.00 6524.00
1983 825.00 729.50 770.00 690.50 337.00 181.50 144.00 65.50 154.00 374.50 773.50 908.50 5953.50
1984 835.00 752.00 655.00 615.50 329.00 182.50 8.50 26.00 147.00 e 603.00 873.00 1045.50 6072.00
1985 940.00 771.00 793.50 401.00 375.50 95.50 19.50 80.00 295.50 510.00 938.00 905.00 6124.50
1986 760.00 677.50 579.00 551.50 353.50 48.50 67.50 11.00 373.50 440.50 722.00 896.00 5480.50
1987 969.50 761.00 744.50 408.00 258.50 95.00 137.50 33.50 156.50 309.50 727.50 1009.50 5610.50
1988 1001.00 697.00 670.50 494.00 434.00 204.00 19.50 29.50 190.50 259.50 780.50 932.00 5712.00
1989 1052.50 895.50 762.50 412.50 374.50 98.50 56.50 84.50 193.00 505.00 703.00 850.00 5988.00
1990 935.00 877.50 657.00 379.00 445.00 185.00 36.00 101.50 141.50 432.00 758.00 1129.00 6076.50
1991 903.00 586.50 849.50 590.00 446.50 227.50 4.00 33.50 61.50 326.50 657.00 879.50 5565.00
1992 897.00 714.00 635.50 423.00 140.00 120.50 45.50 35.00 150.50 375.00 720.50 1028.50 5285.00
1993 1059.00 860.50 621.50 595.50 336.00 208.00 80.00 109.00 175.00 421.00 803.00 946.50 6215.00
1994 849.00 829.00 642.00 501.00 302.00 176.00 5.00 34.00 131.00 493.50 965.50 976.00 5904.00
1995 853.00 571.50 784.50 589.00 356.00 232.50 46.50 94.50 139.00 393.50 543.50 837.50 5441.00
1996 890.50 728.00 664.00 548.50 403.50 144.50 29.00 39.50 228.50 488.50 701.50 891.50 5757.50
1997 904.00 744.00 646.00 547.00 222.00 189.00 47.00 73.00 190.00 506.00 686.00 957.50 5711.50
1998 865.50 852.00 740.00 612.50 559.00 190.00 11.50 36.00 145.00 528.00 805.00 1038.50 6383.00
1999 871.00 878.00 849.50 587.50 387.00 171.00 77.50 68.50 108.00 374.50 634.50 890.00 5897.00
2000 894.00 769.50 726.00 452.00 360.50 101.00 69.00 39.00 190.50 476.00 838.00 855.00 5770.50
2001 924.00 869.00 629.00 623.50 186.50 164.50 28.50 14.50 105.00 365.00 727.50 954.00 5591.00
2002 1007.00 713.00 763.50 485.00 358.00 96.00 5.00 64.00 141.00 460.50 670.50 911.00 5674.50
2003 751.00 754.00 663.00 703.00 346.00 68.00 17.00 31.50 122.50 316.50 833.50 901.50 5507.50
2004 952.00 817.50 537.00 490.00 358.00 96.00 7.50 52.00 182.00 533.00 754.00 885.50 5664.50
2005 913.00 703.00 662.50 594.00 363.00 260.00 0.00 3.50 181.50 442.00 762.50 894.50 5779.50
2006 940.50 749.50 968.50 592.00 297.50 68.00 12.00 20.00 123.50 459.50 744.50 938.00 5913.50
2007 983.00 755.50 596.75 a 502.50 259.50 114.50 15.50 24.00 208.00 529.00 669.00 1039.00 5696.25
2008 1060.50 808.50 761.50 614.00 330.00 121.50 1.50 22.00 81.50 383.00 621.00 1023.00 5828.00
2009 839.50 792.00 762.50 577.00 250.00 153.50 22.50 36.00 57.50 428.50 692.00 967.00 5578.00
2010 813.50 712.00 711.00 673.50 510.00 88.50 k 0.00 s 27.00 s 0.00 z 0.00 z 346.50 q 881.50 4301.50
2011 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
2012 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 373.66 c 635.00 970.82 a 1979.48
2013 990.50 718.00 606.50 17.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 41.50 z 2315.00
Period of Record Statistics
MEAN 948.50 765.23 741.49 562.75 355.02 157.97 36.53 52.74 160.23 431.81 727.72 931.81 5868.97
S.D. 102.58 81.52 89.15 100.95 87.57 60.43 32.60 35.45 67.54 81.48 88.34 95.08 273.40
SKEW 0.54 -0.02 -0.09 0.29 0.25 0.30 1.38 0.89 0.51 -0.30 0.03 0.18 0.25
MAX 1278.50 943.00 968.50 850.00 568.00 297.00 144.00 150.00 373.50 603.00 965.50 1147.00 6524.00
MIN 751.00 571.50 537.00 379.00 140.00 44.00 0.00 0.00 39.50 237.00 485.50 679.00 5285.00
NO YRS 63 63 63 62 62 61 62 62 62 63 63 64 61