YREKA, CALIFORNIA

Monthly Total Heating Degree Days

(049866)

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
1893 0.00 z 852.50 723.50 634.50 326.57 b 133.50 33.50 3.32 c 240.00 513.50 688.50 878.50 5027.89
1894 921.50 901.50 694.00 461.50 201.50 124.50 8.00 2.07 a 65.50 l 350.50 617.07 a 1036.00 5318.14
1895 1012.50 700.50 669.50 438.50 281.00 86.50 21.00 28.00 210.50 284.00 770.50 1052.50 5555.00
1896 869.00 696.00 596.00 641.50 424.00 59.50 1.00 13.50 163.50 365.00 805.00 836.50 5470.50
1897 910.00 751.50 853.50 384.50 122.50 149.50 39.50 14.98 a 161.00 389.00 726.00 876.00 5377.98
1898 1034.50 668.50 723.50 402.50 303.00 88.00 9.00 20.50 117.00 423.00 741.00 975.50 5506.00
1899 883.00 777.50 677.50 465.00 405.50 109.00 3.00 73.00 57.00 493.00 579.00 904.00 5426.50
1900 780.00 679.00 494.50 502.24 a 271.00 34.50 12.00 46.50 203.00 484.00 655.50 818.50 4980.74
1901 1170.50 839.00 637.50 524.50 260.50 182.50 24.00 11.50 179.00 303.00 600.50 885.71 c 5618.21
1902 886.00 567.50 700.50 494.40 e 318.50 88.50 71.50 15.50 0.00 z 0.00 z 675.50 0.00 z 3817.90
1903 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
1904 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
1905 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
1906 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
1907 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
1908 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
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 0.00 z 0.00
1911 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
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 582.00 j 729.50 511.00 432.00 183.50 149.50 0.00 1.00 169.00 364.50 725.50 1111.50 4377.00
1915 936.00 719.70 a 590.00 394.00 383.50 138.00 0.50 0.00 108.50 379.48 b 746.00 901.00 5296.69
1916 1211.00 609.00 a 592.00 438.50 394.22 a 132.50 52.70 a 23.50 124.00 458.80 a 877.50 1109.00 6022.72
1917 1234.50 865.00 858.00 545.00 429.50 155.00 2.50 6.50 217.50 470.00 628.00 872.50 6284.00
1918 861.50 764.50 644.50 0.00 z 329.50 22.50 15.00 37.50 58.00 352.50 747.00 1016.05 b 4848.55
1919 950.50 779.50 698.50 413.50 226.50 94.00 2.00 f 6.00 g 107.59 a 525.00 801.00 1007.00 5603.09
1920 883.50 762.29 a 712.00 523.00 301.00 68.00 11.50 16.50 92.07 a 485.00 720.00 887.50 5462.35
1921 932.00 730.50 574.50 447.93 a 321.37 a 65.50 14.50 10.50 257.00 420.00 746.00 1024.00 5543.80
1922 1206.50 884.00 787.40 a 611.00 315.00 69.11 b 9.00 52.50 129.50 560.30 d 262.00 t 0.00 z 4624.30
1923 760.00 f 860.50 674.00 503.04 b 132.50 l 150.50 g 17.57 a 7.75 a 134.00 472.00 677.78 c 993.19 e 4339.82
1924 1022.00 676.50 748.13 a 399.00 74.00 60.50 4.50 20.50 136.07 b 460.35 a 420.50 l 1037.00 4638.55
1925 821.00 765.33 a 852.50 585.52 a 422.00 231.00 0.00 24.00 146.50 g 463.97 a 707.00 889.70 a 5762.02
1926 930.50 597.50 463.00 244.50 154.50 15.00 2.00 16.50 h 152.78 c 0.00 z 428.00 f 969.50 3529.28
1927 846.50 714.50 682.52 a 517.00 339.00 49.50 11.50 19.50 169.00 375.00 599.00 1036.50 5359.52
1928 894.00 731.50 535.04 d 490.00 132.00 85.50 8.00 1.50 113.50 359.08 a 700.00 995.00 5045.12
1929 1024.50 794.00 635.50 585.00 269.50 153.50 3.00 0.00 156.50 325.50 a 705.00 d 759.50 5411.50
1930 1193.00 627.00 586.42 a 408.00 364.50 79.00 0.50 4.00 167.07 a 385.00 654.00 969.50 5437.99
1931 0.00 z 0.00 z 604.50 396.00 123.50 92.07 a 0.00 0.00 138.50 340.00 737.50 915.53 a 3347.60
1932 955.00 830.50 572.00 529.00 309.50 88.00 29.50 33.50 15.50 327.00 480.00 1048.32 a 5217.82
1933 1055.00 889.50 684.50 446.00 442.50 85.50 0.00 20.50 168.00 259.00 677.50 846.50 5574.50
1934 786.50 639.50 428.32 a 281.50 185.00 110.50 11.50 2.50 114.00 341.00 596.00 870.50 4366.82
1935 1051.00 706.50 687.50 468.50 275.50 62.50 19.50 10.50 26.50 387.00 840.00 938.50 5473.50
1936 886.50 739.50 672.00 384.50 263.50 83.00 10.50 2.50 94.50 256.00 725.50 964.00 5082.00
1937 1418.77 a 908.00 661.00 519.00 269.00 129.50 7.50 36.50 97.00 353.00 679.00 926.50 6004.77
1938 902.50 818.00 811.00 467.50 275.50 70.50 3.10 a 11.50 55.50 0.00 z 659.50 f 889.00 4304.10
1939 923.50 821.52 c 586.23 c 307.50 d 208.96 d 57.00 e 6.72 a 9.19 d 85.34 a 281.50 f 536.50 g 741.00 3746.96
1940 812.50 683.00 594.34 b 418.50 155.50 53.04 b 1.07 b 0.00 e 67.20 e 193.50 m 756.00 877.00 4418.15
1941 750.50 600.50 545.00 471.50 244.50 151.00 0.00 38.50 154.50 414.00 654.50 878.50 4903.00
1942 982.18 a 769.50 720.50 507.50 426.50 174.50 9.50 21.50 65.00 264.69 e 0.00 z 816.00 4757.38
1943 971.73 e 699.39 e 624.59 d 0.00 z 0.00 z 130.50 f 1.19 e 40.54 e 4.04 d 219.50 m 706.73 d 712.50 f 3048.21
1944 979.48 e 778.17 e 666.50 e 587.40 e 281.38 e 161.54 d 0.00 b 8.61 d 104.42 d 173.00 i 530.50 h 523.00 l 3567.50
1945 679.00 g 706.42 d 793.82 c 508.80 e 254.31 d 121.73 d 0.00 d 6.64 c 92.50 283.50 688.50 839.00 4295.23
1946 971.50 817.50 704.00 432.50 240.00 156.00 9.00 3.50 115.50 458.00 725.50 831.00 5464.00
1947 1018.50 638.00 563.00 416.50 144.50 154.14 a 24.50 52.50 93.50 387.00 754.50 921.00 5167.64
1948 911.50 864.00 821.00 684.00 424.00 139.00 55.50 41.00 216.50 457.00 786.00 1113.50 6513.00
1949 1263.50 864.00 715.00 364.50 250.00 94.50 2.50 14.00 98.50 496.00 548.50 957.38 a 5668.38
1950 1173.41 d 770.00 726.00 508.50 294.50 126.00 5.00 14.00 97.50 366.00 627.00 767.00 5474.91
1951 940.50 753.00 744.50 323.00 308.00 72.50 9.50 28.50 34.00 444.00 711.00 985.00 5353.50
1952 1096.00 778.50 784.50 406.00 263.00 197.50 4.50 4.00 58.00 220.00 792.00 961.50 5565.50
1953 772.50 692.50 726.95 a 511.00 465.00 248.00 8.00 45.00 51.50 433.50 602.00 863.50 5419.45
1954 902.00 671.00 744.00 423.00 197.00 223.00 17.50 59.00 177.00 397.00 613.00 952.50 5376.00
1955 1036.50 831.00 774.50 668.00 323.00 97.50 74.40 a 1.00 150.00 j 305.50 765.50 828.00 5704.90
1956 862.00 923.50 710.50 422.00 270.50 146.50 3.10 a 20.67 a 80.50 417.50 719.00 750.00 g 4575.77
1957 1160.50 727.00 666.50 474.50 263.50 57.50 4.50 33.00 74.00 533.50 775.00 874.00 5643.50
1958 913.00 603.50 763.50 494.50 135.00 119.50 12.00 0.00 114.50 227.50 661.00 763.00 4807.00
1959 837.00 758.00 640.50 352.00 386.00 62.50 9.30 a 17.00 173.00 289.00 671.50 1002.33 a 5198.13
1960 937.00 770.00 536.82 a 488.28 a 350.50 19.50 0.00 52.50 42.00 322.00 680.00 879.00 5077.59
1961 863.50 651.00 683.03 a 442.50 326.00 39.00 2.00 1.00 173.50 369.93 a 756.50 973.50 5281.47
1962 1132.00 772.00 760.00 346.50 394.00 97.50 8.50 18.50 46.50 407.50 598.50 894.00 5475.50
1963 1018.00 552.50 723.00 617.50 227.00 145.00 35.50 18.50 37.50 384.00 704.00 879.50 5342.00
1964 959.00 810.50 751.00 501.50 293.50 124.50 12.00 41.00 138.00 298.50 756.50 839.50 5525.50
1965 898.50 716.00 613.00 468.00 334.50 122.50 10.00 24.00 130.00 265.50 617.50 1001.00 5200.50
1966 949.50 806.50 658.00 370.50 155.00 129.00 27.00 18.50 86.00 358.00 635.50 880.50 5074.00
1967 903.50 693.00 746.00 719.50 268.00 117.00 0.00 0.50 27.00 404.00 612.50 1165.00 5656.00
1968 1027.50 631.00 639.00 522.00 319.50 115.50 3.50 73.00 99.50 386.50 708.00 988.00 5513.00
1969 1050.50 823.00 680.50 494.00 163.00 65.50 4.00 11.00 73.00 505.00 679.00 824.50 5373.00
1970 819.00 653.50 649.50 607.50 244.50 94.50 0.50 0.00 159.00 429.50 628.00 956.50 5242.00
1971 910.50 748.00 756.00 547.00 297.50 114.00 17.00 12.00 159.00 494.00 734.00 1031.50 5820.50
1972 1006.50 730.50 545.50 550.50 232.50 58.50 1.00 24.50 183.00 392.00 745.00 1138.00 5607.50
1973 977.50 680.50 750.00 457.00 175.00 72.50 8.50 21.00 80.50 409.00 693.50 790.50 5115.50
1974 1031.00 784.50 686.00 568.50 297.00 43.50 31.50 15.50 24.00 355.50 691.50 909.50 5438.00
1975 1050.50 785.50 773.00 685.00 267.50 107.50 36.00 42.50 19.50 458.00 781.50 884.00 5890.50
1976 923.00 776.50 748.50 578.00 214.00 147.50 19.50 87.00 63.00 335.50 637.00 977.50 5507.00
1977 1173.50 689.00 779.50 403.50 463.00 22.50 18.50 16.50 136.00 375.50 730.00 842.50 5650.00
1978 789.00 686.50 526.00 546.00 319.50 75.50 19.00 54.00 226.00 262.00 779.00 1074.00 5356.50
1979 1000.50 730.00 586.00 507.50 231.50 76.50 20.50 30.50 28.50 301.50 753.50 867.50 5134.00
1980 883.00 641.50 703.50 430.00 299.00 183.00 7.00 11.00 94.50 342.00 676.00 855.00 5125.50
1981 827.00 705.00 663.50 431.00 276.00 192.50 28.50 4.00 114.50 460.00 628.50 801.50 5132.00
1982 1016.50 758.00 734.50 569.50 240.50 122.00 26.00 9.50 204.00 436.50 775.00 996.00 5888.00
1983 886.00 691.50 647.50 574.50 283.00 138.50 83.50 17.00 123.00 345.50 718.00 892.50 5400.50
1984 918.00 728.00 588.00 531.00 282.00 139.00 0.00 6.00 134.50 532.00 774.50 1023.00 5656.00
1985 0.00 z 749.00 756.50 325.50 272.50 68.00 0.00 z 27.00 219.50 446.50 893.00 941.00 4698.50
1986 715.00 0.00 z 500.50 0.00 z 318.50 40.50 19.00 0.50 276.50 349.00 659.00 901.50 3780.00
1987 957.00 704.50 680.00 313.00 192.50 0.00 z 47.50 0.00 z 0.00 z 185.00 674.00 947.50 4701.00
1988 1029.50 693.50 633.50 420.00 374.00 182.50 12.00 4.00 141.00 204.50 725.00 993.00 5412.50
1989 1079.00 920.00 700.50 0.00 z 337.00 0.00 z 22.00 51.00 88.00 440.00 722.00 941.50 5301.00
1990 933.00 893.00 634.50 294.50 358.00 140.50 16.00 44.00 45.00 407.00 798.50 1129.50 5693.50
1991 946.00 583.00 750.00 550.50 399.00 155.00 3.00 0.50 24.00 264.50 666.50 961.50 5303.50
1992 910.00 646.50 560.00 0.00 z 105.00 75.50 22.50 16.50 86.00 330.50 741.00 1032.50 4526.00
1993 1081.50 841.50 572.50 553.50 277.50 197.50 68.00 39.50 0.00 z 369.50 824.00 964.50 5789.50
1994 888.50 780.50 574.00 423.50 225.50 110.50 1.00 0.00 66.00 450.00 931.00 969.50 5420.00
1995 811.00 575.00 724.50 581.00 296.50 194.00 40.50 42.00 45.50 359.00 528.00 761.00 4958.00
1996 881.00 653.50 603.50 461.00 318.00 67.00 10.50 4.50 133.50 406.00 649.00 846.50 5034.00
1997 911.50 731.00 588.50 497.50 152.50 109.50 37.00 5.50 107.00 440.50 649.00 1012.00 5241.50
1998 832.50 740.00 654.50 523.50 449.50 89.50 0.00 0.50 87.00 444.50 741.50 1061.00 5624.00
1999 913.50 803.00 733.00 551.00 307.00 131.00 28.42 a 39.00 69.50 326.50 574.50 920.50 5396.92
2000 881.50 687.50 678.50 375.00 307.00 62.07 a 28.50 2.50 132.50 418.50 857.50 922.00 5353.07
2001 910.50 805.50 597.00 555.52 a 151.50 95.00 5.00 3.00 61.50 347.72 a 704.50 905.50 5142.23
2002 967.00 708.00 725.50 434.50 323.50 72.00 0.50 42.00 104.00 455.00 717.50 902.00 5451.50
2003 783.00 762.50 654.00 630.00 333.50 63.50 0.00 8.50 85.50 309.00 839.00 861.50 5330.00
2004 929.50 756.50 527.50 408.50 283.50 65.00 0.00 15.00 113.00 390.50 740.00 894.50 5123.50
2005 916.00 682.00 587.50 499.50 246.50 170.00 0.00 7.50 126.50 380.50 722.50 920.00 5258.50
2006 874.50 725.00 805.50 478.50 200.50 31.00 0.00 7.50 99.00 389.50 666.50 912.95 a 5190.45
2007 1028.50 746.00 586.00 432.50 214.00 73.00 5.50 1.50 137.00 497.50 691.00 986.00 5398.50
2008 1060.50 827.00 743.50 572.00 279.00 107.00 0.00 8.50 78.00 376.00 644.50 1022.50 5718.50
2009 928.50 739.00 724.50 487.00 201.00 70.00 8.00 22.00 40.50 0.00 z 764.00 1043.50 5028.00
2010 792.00 707.00 673.00 610.50 444.50 115.00 12.00 28.00 90.50 335.00 772.00 831.00 5410.50
2011 932.00 814.00 735.50 580.00 451.00 172.76 a 21.50 0.00 d 39.60 e 432.45 a 748.50 979.08 a 5906.39
2012 944.50 790.50 754.00 451.00 252.50 151.00 12.50 1.00 12.50 333.00 691.50 952.50 5346.50
2013 1076.00 801.00 630.50 34.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 38.00 z 2507.50
Period of Record Statistics
MEAN 957.80 742.64 669.70 482.93 282.78 107.90 14.53 19.44 110.68 384.51 706.01 933.57 5410.71
S.D. 120.89 82.06 87.79 93.36 87.18 49.39 17.24 18.74 58.74 78.24 77.09 90.09 314.40
SKEW 0.93 0.02 -0.25 0.02 0.04 0.44 1.91 1.19 0.47 -0.17 0.04 0.23 0.38
MAX 1418.77 923.50 858.00 719.50 465.00 248.00 83.50 87.00 276.50 560.30 931.00 1165.00 6513.00
MIN 715.00 552.50 428.32 244.50 74.00 15.00 0.00 0.00 4.04 185.00 480.00 741.00 4366.82
NO YRS 104 108 110 104 107 105 107 106 103 101 102 104 81