SNOQUALMIE PASS, WASHINGTON

Monthly Total Growing Degree Days

(457781)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** 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
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 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
1915 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 j 0.00
1916 0.00 0.00 0.00 16.00 49.00 238.50 395.00 592.00 293.57 b 146.00 0.00 0.00 1730.07
1917 0.00 0.00 0.00 0.00 63.00 188.00 581.50 602.00 346.50 192.00 63.00 0.00 2036.00
1918 0.00 0.00 24.50 94.00 196.33 a 0.00 z 617.00 592.00 575.50 194.50 7.50 b 0.50 2301.83
1919 0.00 0.00 9.00 51.50 134.00 72.50 x 586.00 570.00 0.00 z 156.50 6.00 n 0.00 z 1507.00
1920 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 341.50 571.95 a 573.50 315.50 129.50 0.00 0.00 1931.95
1921 0.00 0.00 0.00 4.00 148.80 a 294.00 f 471.20 a 498.50 304.20 e 206.27 e 18.00 2.00 1652.97
1922 0.00 a 0.00 0.00 1.00 96.62 a 491.50 579.50 550.00 371.50 113.50 0.00 3.50 2207.12
1923 1.50 i 0.00 b 6.20 a 25.50 23.50 247.00 538.37 a 574.53 a 242.50 82.15 a 4.50 1.00 1745.25
1924 0.00 0.00 0.00 24.00 271.77 a 378.50 513.00 492.50 303.00 114.00 0.00 e 3.50 2100.27
1925 0.00 0.00 0.00 42.50 241.00 381.50 632.00 487.50 366.00 142.00 0.00 0.00 2292.50
1926 0.00 l 0.00 33.50 181.00 179.00 415.50 552.00 508.50 214.00 146.50 53.50 1.00 2284.50
1927 0.00 2.50 0.50 45.50 50.50 293.50 513.50 490.50 276.00 131.50 29.50 4.50 1838.00
1928 2.50 0.00 22.50 37.50 276.50 285.50 538.50 467.00 337.50 115.50 0.00 0.00 z 2083.00
1929 0.00 z 0.00 z 0.00 z 20.00 148.50 296.50 489.00 534.00 363.00 180.50 10.50 1.00 o 2042.00
1930 0.00 z 5.00 z 6.50 z 95.50 141.00 298.50 509.00 568.00 355.50 72.50 16.00 0.00 2056.00
1931 1.00 0.00 9.30 a 74.00 261.50 354.00 531.50 512.50 303.50 130.00 12.50 0.00 2189.80
1932 0.00 0.00 0.00 29.50 94.50 325.50 390.00 487.00 339.50 167.00 3.50 0.00 1836.50
1933 0.00 0.00 0.00 27.50 76.00 239.50 449.50 566.50 226.50 189.00 43.00 1.50 1819.00
1934 0.00 0.00 49.00 229.50 131.00 o 406.20 e 344.50 j 600.33 e 180.50 h 146.00 l 5.00 0.00 1290.03
1935 2.50 1.50 1.50 47.50 186.00 365.50 498.00 0.00 z 443.50 179.50 0.00 0.00 1725.50
1936 0.00 0.00 19.50 110.00 238.50 292.00 f 597.50 605.00 256.50 g 307.62 e 0.00 z 0.00 1878.12
1937 0.00 0.00 4.50 6.50 205.50 364.50 642.70 c 497.60 b 422.00 223.00 6.00 0.00 2372.30
1938 0.00 0.00 0.00 49.00 206.50 427.00 691.50 531.50 578.00 178.50 0.54 b 0.00 2662.54
1939 0.00 0.00 28.50 78.50 193.00 241.00 530.50 611.00 384.50 151.50 13.00 2.00 2233.50
1940 0.00 0.00 32.50 51.50 292.00 436.00 528.00 556.50 462.00 192.50 0.00 0.00 2551.00
1941 0.00 0.00 65.00 157.50 199.00 369.00 692.50 572.50 240.50 145.50 15.50 3.50 2460.50
1942 0.00 0.00 15.50 95.00 182.00 310.50 680.00 702.00 517.50 246.00 0.00 0.00 2748.50
1943 0.00 0.00 3.00 102.00 127.00 329.00 628.00 559.50 522.50 229.18 c 5.00 0.00 2505.18
1944 0.00 0.00 7.50 66.50 211.50 379.50 588.00 505.00 491.00 347.00 6.50 0.00 2602.50
1945 1.00 1.04 a 1.50 0.00 z 0.00 z 331.80 e 355.00 m 0.00 z 127.00 o 140.50 l 6.50 m 0.00 z 335.34
1946 0.00 h 0.00 d 1.15 d 46.50 i 245.62 e 270.00 d 561.44 d 230.00 q 357.00 e 38.75 e 0.50 f 0.00 g 1473.96
1947 0.00 z 2.50 i 53.39 d 79.50 g 146.00 l 214.00 f 394.50 f 297.50 j 387.00 e 71.00 f 0.00 e 0.00 c 440.39
1948 0.00 e 0.50 f 3.00 i 20.00 f 94.00 j 327.50 f 344.50 h 339.50 h 271.20 e 76.50 h 0.00 f 0.00 g 271.20
1949 0.00 j 0.00 i 2.00 k 36.50 l 171.50 g 122.50 p 225.00 q 346.00 i 266.00 j 55.00 h 36.50 h 0.00 i 0.00
1950 0.00 n 0.00 g 0.00 l 5.50 l 86.50 i 180.50 j 215.50 s 357.00 l 314.00 i 25.00 g 0.00 z 0.00 j 0.00
1951 0.00 d 4.50 j 3.50 l 54.00 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 0.00
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 222.00 k 8.50 0.00 8.50
1953 1.00 0.00 10.50 46.11 c 128.50 199.00 362.50 j 383.00 k 228.00 m 158.50 i 11.00 0.00 396.11
1954 0.00 0.00 0.00 0.00 o 124.50 l 182.50 430.38 a 436.50 370.71 b 104.50 14.00 o 0.00 d 1524.60
1955 0.00 f 0.00 0.00 a 12.93 a 88.50 298.00 428.50 526.00 354.50 134.00 7.00 0.00 1849.43
1956 0.00 0.00 4.00 114.11 b 312.50 232.00 610.00 559.50 397.50 118.00 3.00 1.00 2351.61
1957 0.00 0.00 2.00 65.50 282.50 398.79 a 468.00 341.50 h 546.00 119.50 4.14 a 3.62 a 1890.05
1958 0.00 14.52 a 0.00 g 38.00 401.00 508.00 723.00 670.00 358.50 193.50 14.50 2.00 2923.02
1959 0.00 0.00 3.00 48.00 136.50 356.50 607.00 475.00 289.50 149.50 20.00 1.50 2086.50
1960 0.00 0.00 60.00 86.50 119.00 383.50 690.00 461.00 408.00 212.50 2.00 0.00 2422.50
1961 0.50 0.00 9.50 25.00 185.50 527.00 652.00 733.50 292.50 138.50 1.00 0.00 2565.00
1962 12.50 18.00 4.00 92.00 55.00 325.50 500.50 493.50 438.00 168.00 18.50 0.00 2125.50
1963 0.00 9.00 12.50 27.00 237.00 331.50 456.00 575.50 579.50 220.50 0.50 0.00 2449.00
1964 0.50 0.00 10.50 14.00 132.00 239.00 479.50 433.00 289.50 198.50 1.00 0.00 1797.50
1965 2.58 a 6.00 25.50 77.50 142.00 364.00 636.50 574.00 325.00 249.00 33.00 0.00 2435.08
1966 0.00 0.00 33.00 52.76 a 216.50 308.50 471.50 539.00 466.50 149.83 a 8.50 4.50 2250.59
1967 0.00 0.00 0.00 3.50 196.33 a 479.50 592.00 769.00 548.00 146.00 7.00 8.00 2749.33
1968 3.50 17.09 a 18.00 53.50 221.50 372.00 638.50 498.00 398.79 a 0.00 z 11.38 a 0.00 2232.26
1969 0.00 0.00 33.00 23.65 d 282.74 b 514.00 517.00 450.50 340.00 80.00 42.93 a 0.00 2283.83
1970 0.00 b 0.00 1.50 0.00 181.72 b 471.21 a 571.36 b 600.37 a 310.86 a 135.00 13.93 b 0.00 2285.95
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 1.20 e 0.00 b 1.20
1972 0.00 e 0.00 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 0.00
Period of Record Statistics
MEAN 0.61 1.51 13.37 56.50 179.04 344.34 555.83 550.04 376.61 163.66 11.11 0.93 2275.44
S.D. 1.99 4.34 17.34 48.62 80.79 87.89 83.11 73.24 97.87 58.41 14.62 1.70 288.08
SKEW 5.01 2.98 1.47 1.48 0.22 0.21 0.00 0.92 0.58 0.76 1.95 2.20 -0.28
MAX 12.50 18.00 65.00 229.50 401.00 527.00 723.00 769.00 579.50 347.00 63.00 8.00 2749.33
MIN 0.00 0.00 0.00 0.00 23.50 182.50 390.00 433.00 214.00 38.75 0.00 0.00 1730.07
NO YRS 45 46 46 45 45 45 46 44 46 45 47 47 29