TROUTDALE SUBSTATION, OREGON

Monthly Total Growing Degree Days

(358634)

Base Temperature = 50 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 478.00 455.18 a 309.00 114.50 0.00 0.00 1356.68
1949 0.00 4.00 6.20 a 91.00 290.00 327.00 476.50 503.00 392.50 47.50 89.50 1.03 a 2228.23
1950 0.00 2.00 12.00 25.86 a 151.00 353.00 500.00 573.00 340.50 101.78 a 26.00 15.00 2100.15
1951 0.50 6.00 2.50 143.00 226.00 397.00 540.00 485.50 433.00 139.00 6.00 0.00 2378.50
1952 0.00 0.00 a 1.50 85.50 227.50 295.00 552.00 554.90 a 447.41 a 337.50 8.00 0.00 2509.31
1953 24.28 a 4.00 13.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 42.93 a 3.00 87.71
1954 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
1955 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
1956 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
1957 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
1958 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
1959 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 380.50 f 294.50 153.50 18.10 a 0.00 466.10
1960 0.00 0.00 b 39.00 81.50 132.27 a 350.50 543.00 444.50 332.50 163.50 10.50 0.00 f 2097.27
1961 9.30 a 12.00 18.00 65.00 212.87 a 463.89 c 571.00 629.82 a 288.50 131.50 0.00 1.55 a 2403.42
1962 3.00 1.00 6.50 124.50 111.50 335.50 499.58 e 494.50 394.00 147.00 37.00 0.00 2154.08
1963 0.00 19.00 16.50 42.50 229.00 310.00 161.00 r 492.50 439.50 187.50 12.00 0.00 1748.50
1964 0.00 0.00 25.50 30.00 131.00 281.00 357.00 g 440.89 d 293.50 199.50 4.00 3.50 1408.89
1965 5.50 2.50 57.50 114.00 157.50 346.03 a 601.18 c 596.50 344.50 236.78 b 71.00 5.00 2537.99
1966 2.00 0.50 34.00 114.50 245.00 362.50 482.50 534.00 401.00 127.00 16.00 6.00 2325.00
1967 12.00 4.00 10.00 26.00 235.71 b 484.00 599.50 711.50 516.00 189.50 37.50 3.50 2829.21
1968 1.00 61.00 55.50 61.50 224.00 386.00 577.50 514.50 379.66 a 125.07 b 21.00 0.00 f 2406.72
1969 0.00 b 0.00 48.00 83.50 322.00 502.50 517.50 491.00 404.00 109.53 a 47.50 0.00 2525.53
1970 5.00 4.50 9.00 23.50 207.18 a 473.00 568.50 570.50 304.00 131.50 40.50 2.00 2339.18
1971 4.50 11.00 4.50 58.00 232.00 276.00 559.00 637.50 319.00 143.00 3.50 0.00 2248.00
1972 4.50 5.70 a 55.50 28.00 285.50 383.50 610.50 615.87 a 294.23 d 124.00 22.24 a 17.50 2447.04
1973 0.50 6.00 15.00 95.00 298.24 b 395.00 584.50 469.00 405.00 b 125.55 a 4.50 1.00 2399.29
1974 6.00 1.50 21.50 60.00 166.88 a 426.50 528.03 a 585.50 516.43 b 180.50 19.14 a 12.50 2524.48
1975 3.50 3.50 4.98 c 22.00 244.50 367.50 562.00 466.50 483.50 153.50 35.50 20.00 2366.98
1976 9.00 4.66 a 13.00 74.00 239.50 325.00 538.50 472.00 424.50 165.00 81.50 0.00 2346.66
1977 0.00 12.50 3.50 143.00 138.50 440.00 508.50 677.50 325.50 166.50 19.00 15.00 2449.50
1978 0.00 9.00 77.50 76.00 0.00 z 484.00 570.00 541.00 346.50 236.50 8.50 0.00 2349.00
1979 0.00 0.00 55.50 88.00 270.00 446.00 604.50 531.50 464.00 238.50 7.50 8.50 2714.00
1980 0.00 a 0.50 7.00 152.00 154.00 g 253.50 f 566.04 d 453.67 e 364.80 e 125.50 f 40.50 f 16.00 g 1544.01
1981 4.77 e 29.22 e 47.07 d 61.50 f 163.00 h 360.00 d 515.67 e 493.00 g 324.00 f 116.25 e 33.00 f 1.00 f 1072.98
1982 1.50 18.50 15.00 60.00 230.00 445.50 490.00 540.50 387.50 164.00 9.00 0.50 2362.00
1983 1.55 a 6.00 34.00 106.55 a 222.50 m 327.00 474.00 553.00 327.41 a 106.90 b 49.50 0.00 a 1985.91
1984 6.50 0.50 56.00 42.00 191.50 316.55 a 554.50 569.50 363.50 133.30 a 10.50 0.00 2244.35
1985 0.00 a 0.50 5.50 111.50 240.50 396.50 688.00 528.50 280.50 106.00 21.21 a 0.00 b 2378.71
1986 1.00 15.50 o 49.50 k 65.50 86.00 m 505.86 a 270.50 m 477.00 j 320.50 125.50 i 16.50 0.00 909.36
1987 0.00 0.00 29.45 a 176.00 322.50 483.00 517.50 590.00 437.59 a 239.50 41.00 5.00 2841.54
1988 0.00 18.00 28.93 a 93.00 216.50 362.50 553.00 502.50 371.50 251.50 32.50 1.50 2431.43
1989 0.00 0.00 13.50 184.00 255.50 463.50 415.50 0.00 z 364.50 112.00 45.58 d 7.00 1861.08
1990 20.00 8.00 64.00 149.46 b 211.50 423.00 645.50 656.50 506.50 111.00 39.00 0.00 2834.46
1991 13.95 a 0.00 z 19.50 96.50 145.50 281.00 603.00 624.00 503.00 241.50 24.00 1.00 2552.95
1992 10.00 26.50 81.00 196.50 397.00 520.00 625.00 440.00 j 355.50 161.00 9.00 0.00 2381.50
1993 0.00 0.00 26.00 89.50 372.00 384.00 455.00 586.00 465.00 250.00 4.00 1.00 2632.50
1994 1.00 0.50 92.00 139.50 353.50 372.50 660.50 606.50 528.00 126.50 0.50 3.50 2884.50
1995 6.00 37.85 a 52.00 83.50 356.50 425.50 639.50 532.00 0.00 z 173.00 51.50 8.50 n 2357.35
1996 1.50 l 7.50 j 10.50 k 71.50 i 62.50 o 241.00 k 308.00 p 347.50 l 131.50 q 123.50 k 2.00 k 0.00 n 0.00
1997 1.00 l 0.00 m 6.00 q 31.50 k 263.50 j 238.50 m 237.50 q 366.50 n 229.00 o 61.00 k 13.00 m 0.00 k 0.00
1998 0.00 o 0.00 i 30.50 l 73.00 i 102.50 m 230.00 k 419.50 l 308.00 q 172.50 s 119.00 m 9.50 m 6.00 q 0.00
1999 1.00 n 0.00 p 3.00 q 22.50 p 52.50 v 186.50 m 321.00 m 254.50 s 13.00 z 144.50 51.00 11.00 206.50
2000 0.00 0.00 8.00 138.00 255.00 421.00 534.00 531.50 394.50 154.50 9.50 0.00 a 2446.00
2001 0.00 0.00 35.50 70.50 260.50 337.00 509.50 565.00 414.00 124.50 27.00 0.00 2343.50
2002 1.00 9.50 8.50 95.00 186.00 414.60 e 558.50 559.50 411.50 158.00 1.50 5.00 2408.60
2003 10.50 1.00 45.50 69.50 224.00 458.50 641.50 597.00 438.60 e 266.00 3.00 0.00 2755.10
2004 1.50 0.00 64.00 161.00 283.50 436.00 637.50 201.00 s 168.00 m 166.50 5.50 0.00 z 1755.50
2005 0.00 z 2.00 31.00 71.00 257.50 285.00 542.50 547.50 278.50 143.50 0.50 0.50 2159.50
2006 0.00 0.00 5.50 69.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 75.00
Period of Record Statistics
MEAN 3.61 7.24 29.26 90.78 237.48 391.75 554.51 548.36 386.79 162.24 23.76 3.43 2464.17
S.D. 5.44 11.78 23.86 44.69 67.58 67.84 59.41 65.03 70.59 54.74 21.78 5.30 205.74
SKEW 2.03 2.74 0.80 0.48 0.30 0.05 0.08 0.35 0.31 0.95 1.14 1.73 0.58
MAX 24.28 61.00 92.00 196.50 397.00 520.00 688.00 711.50 528.00 337.50 89.50 20.00 2884.50
MIN 0.00 0.00 1.50 22.00 111.50 276.00 415.50 440.89 278.50 47.50 0.00 0.00 2100.15
NO YRS 47 46 47 46 41 45 44 42 45 47 48 44 31