SPOKANE, WASHINGTON

Monthly Total Growing Degree Days

(457933)

Base Temperature = 40 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 198310
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
1953 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 17.50 r 9.00 9.00
1954 12.50 46.50 51.50 223.50 597.00 621.00 954.50 834.50 638.50 278.50 183.00 7.00 4448.00
1955 0.00 6.00 21.50 127.50 418.50 815.89 b 931.50 963.00 662.50 349.00 0.00 z 11.22 b 4306.62
1956 17.00 0.00 83.50 384.31 a 619.00 699.50 1049.50 960.00 694.14 a 302.50 4.82 b 17.22 d 4831.49
1957 0.00 e 19.50 k 52.04 c 321.00 717.50 769.00 953.50 859.50 756.00 258.33 a 17.50 11.62 c 4715.99
1958 11.50 93.00 91.93 b 242.50 848.50 883.00 1092.00 1102.00 648.00 e 380.00 95.50 19.50 5507.43
1959 21.24 d 4.31 b 79.88 e 303.00 430.00 749.50 1019.50 797.14 c 567.50 263.00 50.50 13.00 4298.58
1960 5.00 0.00 e 174.12 a 265.00 c 445.00 753.50 1144.50 815.09 b 650.50 353.92 a 23.00 0.00 4629.62
1961 31.50 38.37 a 121.00 237.50 517.50 906.00 1031.50 1116.00 545.17 a 242.50 8.50 4.43 c 4799.97
1962 4.00 21.50 49.50 382.00 430.00 704.50 922.77 a 857.00 687.50 301.50 67.24 a 10.85 a 4438.36
1963 18.60 a 59.11 a 131.00 249.00 538.50 704.50 887.00 978.00 852.50 398.72 b 52.78 c 0.00 4869.71
1964 0.50 7.25 a 50.50 242.00 487.73 a 688.97 a 973.00 785.00 550.38 d 365.59 b 44.46 b 18.00 4213.38
1965 4.81 b 22.30 a 69.00 336.00 459.50 734.00 1017.50 987.02 c 513.75 b 493.02 e 113.50 30.00 4780.39
1966 21.18 a 12.50 154.47 b 300.50 630.00 667.24 a 930.00 937.75 a 785.00 338.50 68.28 a 40.00 4885.42
1967 12.50 54.50 51.00 159.50 499.50 816.72 a 1020.50 1081.50 833.00 0.00 z 58.50 7.23 a 4594.46
1968 13.00 82.00 156.50 200.50 505.00 732.50 1063.50 860.00 645.00 255.00 19.50 9.62 b 4542.12
1969 0.00 c 0.00 79.00 272.50 616.50 816.00 904.68 a 867.00 669.50 233.00 64.14 a 8.50 4530.82
1970 3.10 a 23.00 69.00 124.04 d 567.00 847.50 1047.50 956.00 509.00 270.45 b 92.00 9.00 4517.59
1971 41.00 18.48 c 52.38 b 296.00 645.00 603.00 938.50 1015.00 436.00 263.00 25.50 4.65 a 4338.51
1972 0.00 z 30.50 140.50 121.00 515.24 b 672.00 862.00 945.50 466.00 257.00 32.50 20.50 4062.74
1973 5.00 14.00 39.50 174.50 443.50 570.00 954.00 916.50 560.00 193.00 20.00 3.00 3893.00
1974 4.00 0.00 37.00 206.00 319.50 715.34 a 779.50 776.60 b 570.50 209.50 16.80 e 0.50 3635.25
1975 0.00 0.00 d 4.50 66.50 363.00 525.52 a 947.50 723.00 628.00 280.50 84.00 19.12 a 3641.63
1976 3.50 10.00 49.00 256.00 512.50 627.00 914.50 841.50 748.50 289.50 57.00 2.50 4311.50
1977 3.00 52.50 49.50 398.00 402.50 802.50 884.50 991.50 484.00 223.50 50.00 27.56 d 4369.06
1978 0.50 23.00 206.50 283.50 451.57 a 782.00 748.00 f 798.00 453.46 d 226.96 c 15.50 k 0.00 d 3225.49
1979 0.00 a 11.50 100.00 207.00 524.86 b 760.00 975.50 995.50 683.50 338.93 a 10.38 d 11.48 d 4618.66
1980 0.00 13.38 c 12.00 350.00 509.90 b 621.00 929.00 783.50 689.00 356.50 d 106.11 c 77.50 d 4447.89
1981 32.50 90.22 a 98.50 213.00 389.00 525.00 1008.00 1011.00 591.00 272.28 a 31.00 y 0.00 o 4230.51
1982 0.00 r 0.00 z 106.00 187.50 448.00 801.50 872.00 598.00 j 621.50 302.00 33.60 e 0.52 a 3372.62
1983 20.67 a 86.00 121.50 219.00 530.00 654.50 779.50 1038.00 567.00 313.00 0.00 z 0.00 z 4329.17
Period of Record Statistics
MEAN 10.24 29.28 83.41 244.94 512.71 718.96 958.19 916.97 623.55 296.87 53.81 13.57 4479.47
S.D. 11.40 29.76 49.66 82.41 109.85 98.32 84.42 106.52 107.87 65.10 40.84 15.67 417.87
SKEW 1.13 0.98 0.64 -0.04 0.96 -0.19 -0.08 0.09 0.23 0.91 1.28 2.56 -0.07
MAX 41.00 93.00 206.50 398.00 848.50 906.00 1144.50 1116.00 852.50 493.02 183.00 77.50 5507.43
MIN 0.00 0.00 4.50 66.50 319.50 525.00 779.50 723.00 436.00 193.00 4.82 0.00 3635.25
NO YRS 28 28 30 30 30 30 29 29 30 29 26 29 22