PORTLAND WSFO, OREGON

Monthly Total Growing Degree Days

(356751)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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 0.00 z 0.00 z 0.00 z 56.50 7.00 63.50
1942 0.00 0.00 24.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7.00 0.00 31.00
1943 0.00 0.00 14.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7.50 4.00 26.00
1944 0.00 3.50 11.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.50 2.50 35.00
1945 6.00 3.50 2.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 9.00 5.50 26.50
1946 0.00 0.50 3.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 6.00 10.00
1947 5.00 4.00 47.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.00 0.00 76.50
1948 0.00 4.00 8.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 354.50 127.10 a 0.50 0.00 494.60
1949 0.00 0.00 4.50 93.50 288.00 352.00 492.00 510.50 394.00 37.00 49.50 2.00 2223.00
1950 0.00 2.50 12.00 24.50 152.00 353.00 522.50 582.00 354.50 102.00 22.50 17.00 2144.50
1951 1.50 10.00 0.50 110.00 209.00 434.00 528.50 485.50 394.00 143.00 3.50 0.00 2319.50
1952 0.00 0.00 8.50 94.00 235.50 308.50 556.50 553.50 444.00 270.50 0.00 0.50 2471.50
1953 22.00 4.00 12.00 61.50 141.00 258.00 502.50 482.00 374.00 144.50 26.00 2.50 2030.00
1954 1.50 0.50 1.50 39.00 212.00 237.50 404.00 413.00 305.00 122.50 47.50 1.00 1785.00
1955 0.00 1.00 2.00 20.00 105.00 321.00 416.50 479.00 311.00 127.50 22.50 2.00 1807.50
1956 0.00 0.00 7.00 111.50 281.50 271.00 558.00 477.50 324.50 108.00 1.00 4.50 2144.50
1957 0.00 a 11.00 9.00 83.00 274.00 361.00 481.50 449.50 458.00 94.50 6.50 0.50 2228.50
1958 3.50 26.00 8.50 53.00 367.00 456.50 637.50 629.00 369.00 171.50 25.50 9.50 2756.50
1959 0.00 3.50 10.00 91.00 185.00 382.50 577.50 478.50 308.50 150.00 15.50 0.50 2202.50
1960 0.50 0.00 32.00 70.50 135.00 391.00 590.50 477.50 345.00 154.50 12.50 0.00 2209.00
1961 8.50 13.46 b 19.00 59.00 210.50 459.50 599.00 629.00 285.00 147.00 0.50 0.50 2430.96
1962 2.50 2.50 8.50 97.00 126.50 348.00 507.00 493.50 398.50 160.00 29.50 1.00 2174.50
1963 1.00 21.50 10.00 31.50 216.00 298.00 404.00 500.50 453.00 162.00 2.00 0.00 2099.50
1964 0.00 0.00 14.50 5.00 116.50 262.00 449.00 424.50 253.00 125.00 0.00 1.50 1651.00
1965 7.00 1.00 21.50 99.00 146.50 354.50 609.50 574.50 313.00 232.50 60.00 4.50 2423.50
1966 0.00 0.00 31.00 54.00 218.00 370.50 507.50 542.50 433.00 137.00 8.50 5.00 2307.00
1967 4.00 0.00 3.50 8.00 223.00 476.50 597.50 710.00 492.00 159.50 13.00 0.00 2687.00
1968 1.00 47.00 16.00 38.00 201.00 365.50 576.50 488.50 344.50 80.50 14.50 0.00 2173.00
1969 0.00 0.00 23.50 40.50 297.50 495.00 514.50 497.00 402.00 110.00 35.50 0.50 2416.00
1970 3.50 4.00 5.00 21.50 222.50 476.00 593.50 563.00 321.00 127.00 45.00 0.50 2382.50
1971 5.00 4.00 6.50 52.00 210.00 306.00 594.00 669.50 325.00 141.00 3.00 0.00 2316.00
1972 5.00 15.00 74.00 30.00 313.50 419.50 646.50 673.00 333.50 131.00 32.00 15.00 2688.00
1973 1.00 10.50 7.50 82.50 290.50 417.00 627.50 493.50 432.00 135.00 5.50 1.50 2504.00
1974 10.00 0.00 25.50 61.50 186.00 430.00 528.00 585.00 519.00 164.00 20.50 9.00 2538.50
1975 0.50 4.50 3.00 16.50 236.50 355.50 589.00 474.50 470.50 127.50 34.00 20.00 2332.00
1976 4.00 1.00 13.00 62.50 205.00 310.50 531.50 480.50 425.50 155.00 43.00 0.00 2231.50
1977 0.00 5.50 2.00 118.50 120.50 417.50 505.00 671.50 321.50 124.50 10.50 13.50 2310.50
1978 0.00 5.50 61.00 55.50 150.50 453.00 569.00 543.50 327.00 175.50 6.00 0.00 2346.50
1979 0.00 1.00 56.50 113.50 312.50 450.50 634.50 577.50 488.50 255.00 20.00 7.50 2917.00
1980 0.00 3.50 4.00 137.50 227.50 319.50 584.50 507.00 412.50 192.00 55.50 33.00 2476.50
1981 0.50 19.50 25.00 112.00 233.00 352.00 541.50 685.50 446.00 105.00 33.50 1.50 2555.00
1982 1.00 24.50 30.50 48.00 236.50 477.50 540.00 575.50 395.00 156.50 7.50 7.00 2499.50
1983 11.50 18.00 44.00 120.00 323.50 382.50 511.50 591.50 346.00 135.00 47.50 1.50 2532.50
1984 9.50 0.50 52.00 37.50 199.50 364.00 590.50 601.00 410.00 144.00 18.00 0.00 2426.50
1985 0.00 1.50 5.50 143.50 259.00 430.50 747.50 596.00 323.00 115.50 25.50 0.00 2647.50
1986 3.50 33.00 61.00 52.00 246.00 489.00 473.50 691.00 345.00 216.00 27.00 0.00 2637.00
1987 0.00 0.00 27.50 143.00 321.50 494.50 531.50 636.00 464.00 254.50 47.00 2.50 2922.00
1988 0.00 17.50 15.00 95.50 208.50 372.00 570.50 556.00 419.50 262.50 25.00 1.50 2543.50
1989 4.00 0.00 9.50 193.00 246.50 427.00 479.00 497.00 457.50 164.50 41.00 5.50 2524.50
1990 5.00 7.00 54.00 144.00 209.00 406.50 655.50 646.00 510.50 127.00 42.00 0.00 2806.50
1991 3.00 21.50 11.00 63.50 146.50 296.00 615.00 621.00 520.50 226.50 28.50 1.50 2554.50
1992 15.50 21.50 86.50 183.50 406.00 520.50 625.50 613.50 367.00 186.00 9.00 0.00 3034.50
1993 2.00 0.50 19.00 83.50 343.50 375.00 443.50 573.00 468.50 228.50 1.00 11.00 2549.00
1994 4.50 0.00 65.50 133.00 330.50 387.50 652.50 625.00 527.50 137.50 2.00 7.50 2873.00
1995 11.00 21.50 37.50 72.00 332.50 411.50 637.50 535.50 512.50 155.50 88.00 4.50 2819.50
1996 2.00 13.00 11.50 122.00 171.00 408.50 682.50 630.00 354.00 164.50 14.50 1.50 2575.00
1997 4.00 1.50 19.50 64.50 377.50 380.00 585.00 667.00 476.50 123.00 43.50 0.00 2742.00
1998 0.50 2.50 57.00 110.50 196.50 400.50 649.50 650.50 507.00 151.50 27.00 8.00 2761.00
1999 0.50 0.00 16.50 74.50 171.00 335.00 531.00 589.00 437.00 162.50 55.50 5.50 2378.00
2000 0.00 1.50 5.50 141.00 236.00 468.62 a 552.00 550.50 417.00 165.33 a 9.50 0.00 2546.95
2001 0.00 0.00 24.00 67.50 262.43 b 331.00 511.50 595.50 445.34 a 137.00 35.00 1.50 2410.78
2002 2.00 11.00 2.00 89.00 189.00 439.00 614.00 597.50 440.50 160.00 22.00 4.50 2570.50
2003 10.50 1.50 48.05 a 64.00 237.50 482.00 669.00 621.50 501.50 271.50 8.50 0.00 2915.55
2004 4.50 1.00 75.50 193.00 313.00 464.00 667.00 665.50 383.00 207.50 8.50 12.00 2994.50
2005 8.00 3.00 51.00 97.50 314.00 359.00 628.50 642.00 374.00 196.50 2.50 4.00 2680.00
2006 3.50 0.50 14.50 110.50 302.50 489.00 650.00 595.00 453.00 150.50 44.00 4.50 2817.50
2007 0.00 6.50 71.50 94.00 269.00 385.50 642.00 566.50 372.50 109.00 15.50 4.50 2536.50
2008 0.00 9.00 6.50 43.00 275.00 354.50 582.50 607.50 457.00 122.00 51.00 0.50 2508.50
2009 4.50 0.00 7.50 97.50 315.00 471.50 730.50 617.00 484.00 155.00 19.50 0.00 2902.00
2010 1.50 3.00 24.50 69.00 167.00 313.00 542.00 562.50 433.00 164.50 55.00 13.50 2348.50
2011 15.00 0.00 12.00 15.00 127.00 350.00 516.50 615.50 522.00 181.50 5.50 3.00 2363.00
2012 1.00 3.50 5.00 124.00 251.00 336.50 558.00 654.00 481.50 198.50 62.00 3.00 2678.00
2013 0.00 1.50 71.50 7.50 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 73.00
Period of Record Statistics
MEAN 3.08 6.38 23.50 81.80 234.87 388.50 568.15 571.66 408.27 157.36 23.76 4.00 2474.70
S.D. 4.37 9.18 22.43 44.08 70.34 67.41 73.87 72.16 69.71 46.30 19.59 5.69 288.81
SKEW 2.03 2.07 1.16 0.47 0.21 -0.08 -0.08 -0.20 -0.08 0.64 0.80 2.57 -0.41
MAX 22.00 47.00 86.50 193.00 406.00 520.50 747.50 710.00 527.50 271.50 88.00 33.00 3034.50
MIN 0.00 0.00 0.50 5.00 105.00 237.50 404.00 413.00 253.00 37.00 0.00 0.00 1651.00
NO YRS 72 72 72 64 64 64 64 64 65 65 72 72 64