LAKE ARROWHEAD, CALIFORNIA

Monthly Total Heating Degree Days

(044671)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201111
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
1941 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 25.00 193.50 453.00 512.50 803.50 1987.50
1942 794.50 739.00 688.50 568.50 383.50 96.50 1.00 21.50 59.50 289.00 481.50 650.00 4773.00
1943 772.50 652.50 594.00 407.50 192.50 197.50 18.00 7.00 22.00 289.50 547.50 838.50 4539.00
1944 885.00 865.50 751.50 601.50 334.50 289.50 38.50 6.00 65.50 281.50 693.00 753.50 5565.50
1945 815.50 693.50 864.50 462.00 332.00 121.50 0.00 3.50 113.50 311.00 606.00 804.00 5127.00
1946 823.00 766.00 732.00 401.00 341.00 115.50 10.50 6.00 70.50 533.00 767.50 716.50 5282.50
1947 858.50 634.00 619.50 469.50 236.00 138.00 3.50 45.50 61.50 353.00 763.00 905.00 5087.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 24.50 21.50 137.50 353.50 591.00 884.50 2012.50
1949 1165.50 892.00 793.50 412.00 389.50 83.00 20.50 65.50 63.50 391.00 426.00 839.00 5541.00
1950 936.00 580.00 608.50 368.00 308.50 139.50 1.50 16.00 184.00 222.50 455.50 565.00 4385.00
1951 801.50 674.00 625.00 514.00 350.50 150.00 3.50 41.00 43.50 226.50 o 663.00 903.00 4769.00
1952 981.50 773.50 924.50 557.50 233.50 263.00 13.00 0.00 71.50 157.00 793.50 924.00 5692.50
1953 690.50 691.50 679.00 563.00 561.00 238.00 0.00 50.00 67.50 345.50 530.50 789.00 5205.50
1954 844.00 569.50 783.00 404.50 209.50 196.50 2.00 79.50 34.00 270.00 545.50 841.50 4779.50
1955 1049.50 805.00 675.00 602.50 429.50 197.00 75.00 1.50 114.50 230.00 624.00 742.00 5545.50
1956 710.50 823.50 588.47 b 611.50 383.00 94.00 49.50 56.50 6.50 411.50 595.00 768.00 5097.97
1957 971.00 590.50 637.50 557.00 508.50 95.00 13.50 52.50 96.50 486.00 742.50 756.50 5507.00
1958 794.00 630.00 866.00 556.50 256.00 176.00 58.50 0.00 56.50 215.00 632.00 614.50 4855.00
1959 728.00 806.00 560.50 389.50 452.50 85.50 2.00 42.50 161.50 229.50 571.00 758.50 4787.00
1960 998.50 784.00 503.50 447.50 335.50 33.00 9.50 30.00 39.00 345.50 668.50 838.50 5033.00
1961 762.50 633.00 658.50 461.00 458.50 135.00 a 8.50 18.50 141.00 349.50 700.34 a 882.50 5208.84
1962 0.00 z 806.00 862.00 340.50 493.50 139.00 19.00 7.00 30.50 290.50 522.50 754.50 4265.00
1963 906.50 492.50 742.00 687.50 323.50 272.00 34.00 18.50 72.50 289.00 653.00 812.50 5303.50
1964 905.00 767.00 790.00 625.00 460.50 203.50 8.50 26.00 65.00 165.00 780.00 794.50 5590.00
1965 809.50 656.00 748.50 643.50 433.50 272.50 21.00 20.00 204.00 153.00 586.50 888.00 5436.00
1966 931.00 811.50 573.50 408.50 298.50 130.00 8.50 20.00 78.50 300.00 613.00 820.00 4993.00
1967 807.00 663.00 695.00 839.50 381.50 235.00 0.00 0.00 74.00 251.00 507.50 1031.00 5484.50
1968 884.00 601.50 665.00 527.50 340.00 121.00 25.50 84.00 95.00 321.00 639.50 883.50 5187.50
1969 821.00 869.17 d 768.00 501.00 267.00 156.00 18.50 0.50 43.00 453.50 627.50 760.50 5285.67
1970 783.00 635.00 699.50 634.00 217.00 a 137.50 0.00 0.00 99.50 409.50 583.50 916.00 5114.50
1971 849.00 714.50 623.50 584.00 485.50 187.00 15.00 6.00 144.50 482.50 647.50 1025.00 5764.00
1972 917.00 687.00 431.50 544.00 390.00 139.50 9.00 40.00 143.50 507.00 777.00 973.50 5559.00
1973 994.00 792.50 874.50 555.50 208.00 79.50 31.50 47.00 92.00 368.00 698.50 774.50 5515.50
1974 938.00 741.50 715.00 520.50 296.50 42.50 19.00 17.57 a 13.00 392.50 648.00 887.63 a 5231.70
1975 831.00 771.50 792.50 794.50 365.00 127.50 24.50 45.50 39.00 421.50 687.50 831.50 5731.50
1976 789.00 760.50 765.50 654.50 275.50 144.50 12.50 108.50 169.50 390.50 564.50 798.25 a 5433.25
1977 913.00 672.00 857.50 444.00 592.00 76.50 5.50 9.50 136.00 260.50 538.50 642.50 5147.50
1978 808.00 739.00 617.50 633.00 308.00 72.00 32.50 35.00 149.50 240.00 758.50 990.50 5383.50
1979 989.00 824.50 786.00 525.00 296.50 89.00 43.50 65.50 20.00 325.00 709.50 760.00 5433.50
1980 783.50 682.50 789.50 499.00 533.00 160.50 12.00 0.00 z 75.00 0.00 z 576.50 667.50 4779.00
1981 764.50 698.00 762.00 430.00 345.50 17.59 a 0.50 0.00 68.00 492.50 600.50 719.00 4898.09
1982 962.50 683.00 825.50 597.00 366.00 187.00 56.50 7.50 196.50 480.00 779.00 847.00 5987.50
1983 819.50 719.50 782.50 751.50 335.50 176.50 34.00 45.47 a 93.00 419.00 675.00 775.00 5626.47
1984 769.00 729.50 602.50 551.50 133.50 146.00 0.00 z 3.50 60.50 484.50 732.50 972.00 5185.00
1985 922.50 774.00 761.50 0.00 z 326.02 a 71.90 a 6.00 16.00 249.50 392.15 a 732.50 834.00 5086.06
1986 702.50 688.50 608.00 503.00 279.00 50.40 e 27.00 0.00 305.00 462.00 580.50 813.50 5019.40
1987 915.00 755.00 773.50 342.93 a 351.50 63.00 75.50 28.00 68.50 290.50 690.50 978.50 5332.43
1988 879.50 702.50 601.00 521.00 332.50 138.50 9.00 19.50 109.00 159.50 608.50 902.50 4983.00
1989 952.50 806.00 526.50 251.00 297.50 104.50 0.00 46.00 91.50 400.00 580.00 769.00 4824.50
1990 890.50 845.00 683.00 454.00 394.50 118.00 2.00 43.00 117.50 238.00 611.50 994.00 5391.00
1991 825.00 574.00 884.50 499.50 421.00 210.00 19.50 23.00 41.50 257.00 597.50 844.00 5196.50
1992 906.50 722.50 740.00 346.50 212.50 151.50 41.00 13.00 20.00 291.00 689.50 965.50 5099.50
1993 898.00 805.50 590.50 402.50 240.00 134.50 57.50 33.50 89.00 364.00 676.50 855.00 5146.50
1994 762.00 814.00 617.50 478.00 334.50 42.00 0.00 0.50 0.00 z 446.00 843.00 853.00 5190.50
1995 896.00 572.50 676.00 567.00 506.00 175.50 16.00 0.00 59.00 261.00 422.00 742.00 4893.00
1996 752.50 644.50 615.00 357.50 219.50 62.50 0.00 3.50 74.50 378.00 622.00 795.50 4525.00
1997 865.00 709.50 470.00 0.00 z 0.00 z 0.00 z 0.00 z 4.00 46.00 378.00 544.50 852.00 3869.00
1998 758.47 a 482.50 l 766.00 0.00 z 580.50 215.50 2.00 0.00 z 161.50 0.00 z 718.50 932.00 4134.47
1999 823.00 774.00 739.00 716.50 323.95 a 155.50 0.00 15.00 34.14 a 195.82 a 522.50 799.00 5098.40
2000 721.50 711.04 b 546.50 f 386.25 b 132.00 24.44 c 1.03 a 19.52 d 117.50 401.45 a 692.07 a 661.13 e 3867.94
2001 891.80 c 818.42 d 351.00 l 454.50 f 48.80 d 18.50 f 3.50 0.53 b 46.73 d 256.27 a 622.78 c 944.39 c 3633.22
2002 855.50 756.50 531.00 j 542.50 123.00 s 35.00 0.00 3.00 93.00 458.00 608.50 933.00 4285.00
2003 684.50 784.00 726.12 e 513.50 h 0.00 z 75.00 0.00 5.50 27.00 113.50 k 355.50 q 928.00 3230.12
2004 686.00 h 864.50 364.50 k 470.50 268.50 30.50 u 0.00 t 14.50 g 109.50 f 501.00 550.50 j 532.50 n 2104.50
2005 873.00 0.00 z 740.00 420.50 g 316.50 152.00 0.00 9.50 138.21 b 381.50 561.00 766.00 3937.71
2006 865.00 713.50 979.94 d 662.50 190.50 36.00 7.00 22.00 126.50 455.00 571.00 890.50 5519.44
2007 942.52 e 753.00 620.00 a 484.50 0.00 z 64.50 0.00 z 3.50 188.00 316.00 f 391.00 g 951.50 4007.52
2008 1002.00 412.00 n 714.19 e 368.00 j 218.00 o 15.50 v 0.00 z 0.00 p 19.50 m 126.00 u 241.00 p 340.00 t 1716.19
2009 249.50 v 0.00 z 0.00 z 235.50 r 190.13 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 190.13
2010 0.00 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
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
Period of Record Statistics
MEAN 858.45 725.53 705.71 519.17 335.59 132.84 16.95 23.52 94.90 344.82 629.85 831.91 5222.93
S.D. 93.89 85.77 111.78 117.61 112.53 66.25 19.16 23.75 59.97 99.88 92.50 100.91 340.13
SKEW 0.47 -0.35 -0.03 0.37 0.16 0.36 1.40 1.30 1.07 -0.08 0.01 -0.24 -0.27
MAX 1165.50 892.00 979.94 839.50 592.00 289.50 75.50 108.50 305.00 533.00 843.00 1031.00 5987.50
MIN 684.50 492.50 431.50 251.00 48.80 17.59 0.00 0.00 6.50 153.00 422.00 565.00 4385.00
NO YRS 64 63 62 59 62 62 62 64 65 62 64 66 50