SPIRIT LAKE RANGER STN, WASHINGTON

Monthly Total Heating Degree Days

(457919)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 195608
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
1932 0.00 z 0.00 z 0.00 z 0.00 z 762.08 a 0.00 z 0.00 z 0.00 z 418.00 642.00 790.50 1149.50 3762.08
1933 1173.35 a 1124.15 a 1013.91 b 870.00 816.00 612.86 b 398.00 226.00 529.00 640.50 810.52 a 909.50 9123.79
1934 939.96 c 790.00 775.50 499.00 482.00 354.50 231.00 124.00 a 436.00 602.00 790.00 973.50 6997.46
1935 1107.00 876.30 a 1078.00 828.50 683.50 489.00 259.50 250.50 293.00 737.00 1029.00 932.07 a 8563.36
1936 1031.00 1131.00 1056.00 823.50 590.50 452.00 194.00 157.00 380.00 519.50 776.50 996.00 8107.00
1937 1430.00 1014.00 893.83 a 878.00 677.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 593.00 i 1008.00 5900.83
1938 1082.00 1001.50 1031.00 832.76 a 468.50 i 383.00 153.97 a 304.50 273.00 618.00 970.50 1012.50 7662.73
1939 1043.00 1082.00 1042.50 736.50 664.00 523.50 222.00 105.00 i 354.00 633.00 750.00 b 884.00 7934.50
1940 1054.00 913.00 884.00 747.50 483.00 271.00 189.00 182.50 318.00 586.00 964.00 975.50 7567.50
1941 983.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 111.00 219.00 502.00 665.50 799.00 1044.00 4324.00
1942 1050.50 956.00 972.50 777.00 723.00 527.00 0.00 z 149.00 339.00 626.50 956.00 1055.00 8131.50
1943 1192.00 963.50 1065.00 892.50 846.00 657.00 229.00 328.00 310.50 670.50 804.50 1006.00 8964.50
1944 1096.00 1042.00 1074.00 899.00 727.00 414.50 180.50 288.00 383.00 544.57 a 902.50 1049.50 8600.57
1945 1056.07 a 965.50 1065.50 951.50 856.50 658.00 156.50 214.00 458.50 0.00 z 0.00 z 0.00 z 6382.07
1946 1101.00 1044.50 1003.00 844.50 637.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4630.50
1947 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 311.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 311.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 247.50 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1949 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 346.50 q 388.00 m 574.00 p 0.00
1950 1479.39 d 976.00 1048.32 a 527.00 l 486.00 j 362.50 i 184.00 g 175.00 316.00 742.00 908.50 583.50 l 5645.21
1951 1153.50 927.00 1081.50 712.00 640.50 353.50 190.50 317.50 339.50 781.00 963.00 1035.50 f 7459.50
1952 1293.00 1049.00 1122.00 783.00 596.00 f 613.33 c 240.00 279.50 283.80 e 326.50 f 904.00 840.00 f 6567.63
1953 449.50 p 901.50 968.00 843.00 e 735.50 590.00 209.00 247.50 93.00 n 570.06 d 858.60 e 616.00 l 5923.16
1954 1144.50 923.39 e 831.00 f 840.50 651.00 509.00 f 274.50 340.00 368.00 625.00 756.50 1030.00 6953.39
1955 1097.50 993.00 1145.50 957.50 792.50 567.00 411.00 211.50 377.50 668.50 857.00 g 814.00 i 7221.50
1956 1156.50 1142.50 1083.00 757.00 622.50 583.50 170.00 g 173.94 d 0.00 z 0.00 z 0.00 z 0.00 z 5518.94
Period of Record Statistics
MEAN 1133.19 990.79 1021.21 814.38 688.34 503.11 232.97 232.64 371.04 639.51 866.68 1001.79 8274.88
S.D. 134.56 90.96 90.20 102.44 107.46 119.55 80.31 65.80 73.40 68.88 88.57 67.06 768.75
SKEW 1.28 -0.11 -1.23 -1.40 -0.32 -0.41 0.94 0.11 0.70 0.35 0.26 0.21 -0.57
MAX 1479.39 1142.50 1145.50 957.50 856.50 658.00 411.00 340.00 529.00 781.00 1029.00 1149.50 9123.79
MIN 939.96 790.00 775.50 499.00 482.00 271.00 111.00 124.00 273.00 519.50 750.00 884.00 6997.46
NO YRS 20 20 19 19 18 16 17 18 18 17 17 14 7