SNOQUALMIE PASS, WASHINGTON

Monthly Total Heating Degree Days

(457781)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197202
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
1931 1109.00 989.00 954.28 a 750.00 525.00 397.00 256.00 265.50 446.50 685.00 1039.50 1246.00 8662.78
1932 1251.00 1147.00 1024.00 808.50 702.50 428.50 385.00 288.00 413.00 648.00 897.50 1276.00 9269.00
1933 1149.00 1176.50 1053.00 843.50 712.00 520.50 328.00 220.00 539.00 612.00 820.00 1029.50 9003.00
1934 1008.50 839.50 777.00 535.50 270.50 o 349.20 e 181.00 j 200.90 e 375.00 h 336.00 l 861.50 1099.00 5671.10
1935 1217.50 911.00 1030.50 782.50 594.00 384.50 290.50 0.00 z 307.00 680.00 1008.50 1157.50 8363.50
1936 1127.00 1433.50 1003.00 718.00 543.00 308.00 f 186.50 178.00 320.50 g 473.35 e 0.00 z 1045.00 6707.35
1937 1557.50 1101.50 877.00 853.00 580.00 387.50 140.61 c 277.40 b 332.00 553.00 898.00 1089.50 8647.00
1938 1158.00 1008.00 1001.00 742.50 595.50 324.50 139.00 255.50 199.50 605.50 1022.14 b 1100.00 8151.14
1939 1056.00 1079.00 942.50 708.50 595.50 509.00 267.00 183.00 365.50 654.50 815.50 1007.00 8183.00
1940 1171.00 972.50 841.00 725.50 484.00 319.00 247.00 225.50 293.50 600.00 1068.00 1086.50 8033.50
1941 1103.50 902.50 775.00 615.00 581.50 382.50 143.50 212.50 509.50 633.00 840.50 1094.00 7793.00
1942 1285.50 959.00 928.00 679.50 611.00 439.50 145.00 122.50 236.00 547.00 1016.00 1104.50 8073.50
1943 1415.50 925.50 999.50 678.00 666.50 421.00 164.50 220.50 228.50 580.70 c 865.50 1137.50 8303.20
1944 1173.50 998.50 982.50 721.00 581.50 372.00 202.50 273.00 273.50 428.00 935.50 1232.00 8173.50
1945 1107.50 910.52 a 981.50 0.00 z 0.00 z 419.40 e 96.00 m 0.00 z 248.00 o 362.50 l 577.50 m 0.00 z 3418.92
1946 822.00 h 991.67 d 946.65 d 523.50 i 529.38 e 480.00 d 227.91 d 120.00 q 394.20 e 808.38 e 810.50 f 857.00 g 4378.19
1947 0.00 z 562.00 i 839.87 d 524.50 g 329.00 l 386.00 f 232.50 f 227.50 j 363.60 e 587.50 f 934.20 e 1089.43 c 3227.10
1948 1229.87 e 892.00 f 741.00 i 716.50 f 449.50 j 272.50 f 234.50 h 236.00 h 484.20 e 530.00 h 791.00 f 1004.00 g 1714.07
1949 1075.50 j 766.50 i 596.50 k 442.50 l 442.00 g 228.00 p 125.00 q 204.50 i 234.00 j 553.00 h 558.50 h 801.50 i 0.00
1950 928.50 n 828.50 g 649.50 l 499.50 l 481.00 i 320.50 j 84.50 s 119.50 l 215.50 i 612.00 g 0.00 z 791.50 j 0.00
1951 1256.65 d 615.00 j 671.50 l 420.00 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1256.65
1952 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 280.50 k 978.50 1120.00 2098.50
1953 955.00 928.00 964.00 782.78 c 660.00 551.00 173.00 j 118.00 k 199.00 m 392.50 i 859.50 1025.00 6725.28
1954 1284.00 980.00 1052.00 440.50 o 356.00 l 574.00 344.62 a 338.50 379.29 b 687.50 389.50 o 1120.02 d 6759.92
1955 927.50 f 1009.50 1108.25 a 878.79 a 711.50 452.00 349.50 254.50 404.50 687.50 1137.00 1249.50 8242.54
1956 1209.00 1191.50 1032.00 678.21 b 465.50 518.00 197.50 241.00 352.50 738.50 978.50 1058.50 8660.71
1957 1455.00 1004.00 939.50 725.50 492.50 351.21 a 307.00 233.50 h 205.50 688.50 903.10 a 995.62 a 8067.43
1958 1068.00 809.93 a 699.00 g 761.00 378.50 265.50 93.50 127.00 405.50 587.50 993.00 1017.00 6506.43
1959 1177.50 990.50 959.50 754.50 662.50 396.50 193.50 304.00 460.50 636.00 951.50 1101.50 8588.00
1960 1223.00 1038.50 953.00 728.50 669.50 367.00 130.50 331.50 342.50 588.50 935.00 1161.50 8469.00
1961 1079.00 901.00 916.00 816.00 609.00 248.50 153.00 96.00 459.00 693.00 1067.50 1167.00 8205.00
1962 1139.50 917.50 995.50 703.00 733.00 424.50 278.50 281.50 312.00 618.00 868.50 1023.50 8295.00
1963 1263.00 770.50 910.50 793.00 552.50 418.50 319.00 214.00 190.00 589.50 924.00 1151.50 8096.00
1964 1118.00 961.00 1011.00 852.00 688.00 511.00 297.00 342.00 460.50 589.00 1002.00 1271.50 9103.00
1965 1068.47 a 936.50 948.50 710.50 659.50 386.00 172.50 225.00 425.00 533.00 830.50 1152.50 8047.97
1966 1157.00 947.50 949.50 740.17 a 573.00 443.50 303.50 243.50 287.00 643.25 a 875.50 1011.50 8174.92
1967 1062.50 870.00 1045.50 830.00 590.55 a 276.50 189.00 75.50 208.50 639.00 881.50 1085.00 7753.55
1968 1144.00 875.70 a 860.50 810.50 567.00 381.00 164.00 282.50 352.76 a 0.00 z 919.14 a 1318.00 7675.09
1969 1463.50 1012.50 885.50 793.85 d 505.62 b 249.00 258.00 324.50 410.50 723.00 868.97 a 1103.50 8598.43
1970 1212.74 b 850.50 932.00 881.50 610.91 b 285.00 a 219.14 b 183.42 a 439.14 a 693.00 968.04 b 1203.00 8478.38
1971 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 960.00 e 1204.19 b 2164.19
1972 1299.02 e 844.50 g 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 1299.02
Period of Record Statistics
MEAN 1192.99 980.58 953.50 754.86 594.53 400.99 228.80 234.02 358.76 628.11 937.09 1123.81 8380.98
S.D. 130.82 125.09 76.91 76.48 81.83 85.42 77.05 69.94 96.12 77.83 79.58 85.06 393.20
SKEW 0.90 1.47 -0.50 -0.57 -0.41 0.04 0.23 -0.50 -0.19 -0.32 0.48 0.50 0.59
MAX 1557.50 1433.50 1108.25 881.50 733.00 574.00 385.00 342.00 539.00 808.38 1137.00 1318.00 9269.00
MIN 955.00 770.50 775.00 535.50 378.50 248.50 93.50 75.50 190.00 428.00 815.50 995.62 7753.55
NO YRS 35 34 34 31 31 33 31 29 32 30 33 35 23