TROUTDALE, OR

Monthly Sum of Heating Degree Days (Degrees Fahrenheit)

(358634)

Base Temperature = 65 F

File last updated on Mar 04, 2015
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.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
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)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
1965-----z-----z-----z-----z-----z-----z28.39c23.00 118.00 225.00b441.00 774.00 1609.39f
1966721.50 611.00 561.00 340.00 235.00 127.00 45.50 29.00 81.00 365.50 520.00 626.50 4263.00
1967588.00 563.00 609.50 491.50 232.24b49.50 3.00 1.00 23.50 280.50 508.00 736.50 4086.24
1968761.00 475.50 457.50 450.00 245.50 101.50 23.00 36.50 101.00a332.59b525.00 616.50f3509.09a
19691002.41b677.00 511.00 387.50 176.50 48.50 26.50 35.00 94.50 356.00a506.50 696.00 4517.41
1970791.00 503.00 550.00 492.00 261.00a79.50 21.00 20.50 154.00 379.00 521.00 771.50 4543.50
1971741.50 582.50 667.50 452.50 246.50 184.50 48.50 6.50 138.00 395.50 574.00 761.50 4799.00
1972823.50 631.50a501.50 523.00 210.50 91.50 18.00 21.50a205.23d379.00 492.00a884.00 4781.23
1973815.50 589.50 528.00 385.50 206.38b115.00 29.50 65.50 85.45b333.50a631.00 613.00 4397.83
1974863.50 612.00 561.00 408.00 295.50a81.00 45.50a21.00 39.88b290.00 476.00a614.50 4307.88
1975708.00 667.00 585.00c519.00 233.00 126.50 35.50 59.00 56.50 332.50 560.50 679.50 4562.00
1976676.00 586.00a619.00 417.00 236.50 156.00 20.50 50.00 67.50 313.50 468.00 735.50 4345.50
1977869.50 553.50 567.00 342.00 330.00 57.50 47.50 19.00 132.50 300.00 639.50 674.50 4532.50
1978786.00 532.00 483.50 389.00 -----z54.00 36.50 30.50 125.50 242.50 719.50 838.00 4237.00a
19791125.50 672.50 475.00 391.50 205.00 68.00 19.50 18.00 49.00 240.50 600.50 657.50 4522.50
1980896.00a667.00 574.50 328.00 209.00g110.50f22.78d54.81e101.50e265.50f408.00f530.50g2644.59e
1981606.92e571.70e453.89d333.00f183.00h108.19d36.92e8.00g81.00f345.00e360.50f537.00f2122.62f
1982805.00 620.00 562.50 459.50 242.50 89.00 48.00 30.00 105.00 312.50 609.00 747.00 4630.00
1983657.50a527.00 458.50 373.50a84.50m139.50 51.50 12.50 128.00a351.21b456.50 913.00a4068.71a
1984729.00 597.50 437.00 437.50 282.00 152.50a20.00 9.00 118.50 383.50a550.50 842.50 4559.50
1985895.00a709.00 622.00 386.50 240.50 107.50 7.00 31.00 169.50 384.00 793.00a996.72b5341.72
1986752.00 252.50o268.00k429.00 198.50m46.00a26.50m0.00j167.00 207.00i541.00 805.50 2740.50f
1987813.50 556.00 505.50a305.00 186.00 67.00 40.50 13.00 80.50a241.00 476.50 817.00 4101.50
1988823.00 608.50 521.50a386.00 271.00 138.50 29.00 48.00 122.50 221.50 505.50 698.50 4373.50
1989693.00 856.50 610.00 284.00 222.50 61.50 75.50 -----z123.00 378.50 442.81d744.50 4491.81a
1990615.00 624.00 453.00 298.80b264.00 88.50 20.00 6.00 20.50 358.50 482.50 928.50 4159.30
1991754.00a433.50a578.00 391.00 322.50 185.00 11.00 16.00 37.50 286.50 528.50 712.50 4256.00
1992651.00 476.50 396.00 285.50 126.00 44.50 8.50 6.00j124.50 308.00 575.00 856.50 3852.00a
1993934.00 703.50 537.50 372.50 130.00 96.00 37.50 19.50 67.50 218.00 743.50 766.00 4625.50
1994634.50 689.50 435.50 316.00 143.50 105.00 17.00 2.50 28.50 342.50 683.50 733.00 4131.00
1995736.50 460.50a489.50 397.50 147.00 90.00 7.50 32.00 -----z301.50 438.50 359.50n3100.50b
1996460.00l459.00j324.50k254.50i180.50o56.50k14.00p17.50l67.00q207.50k401.50k428.50n0.00l
1997481.00l319.50m279.00q273.50k81.50j33.50m16.00q4.50n27.00o249.50k306.00m469.50k0.00l
1998381.00o382.50i313.50l264.50i169.50m69.00k1.50l0.50q15.50s161.00m263.50m325.50q0.00l
1999370.50n255.50p273.00q217.00p88.00v92.00m18.50m2.00s-----z326.00 449.50 621.50 1397.00i
2000770.00 621.50 591.00 336.00 219.50 97.00 31.00 31.50 88.50 317.00 680.00 750.50a4533.50
2001755.00 655.50 529.50 451.00 232.00 148.00 27.00 15.50 80.50 378.00 513.50 705.00 4490.50
2002729.50 555.50 606.50 373.50 295.50 95.12e31.00 25.50 80.00 342.00 634.50 681.00 4449.62
2003632.50 607.50 510.00 421.00 272.50 86.50 8.00 10.00 73.08e217.00 628.50 774.00 4240.58
2004907.00 663.00 448.00 302.50 185.00 75.50 8.50 16.00s88.00m320.00 592.50 -----z3502.00c
2005-----z663.50 511.50 422.00 227.00 177.00 20.00 25.00 180.00 335.50 669.50 879.00 4110.00a
2006683.00 705.50 637.50 418.00 -----z121.00 41.50 72.50 132.50 472.00 695.00 -----z3978.50b
2007-----z705.00 591.96c534.00 373.00 216.00 45.00 27.50 139.50 408.00 608.50 782.50 4430.96a
2008861.50 620.50 650.50 534.50 294.50 203.00 29.00 34.50 104.00 387.50 495.00 872.00 5086.50
2009822.00 671.50 662.50 452.50 245.50 74.00 21.50 27.50 69.00 385.00 558.00 910.00 4899.00
2010665.00 562.00 526.00 454.50 364.50 196.50 73.00 55.50 100.00 315.00 428.50g754.50 4066.50a
2011758.50a719.50 640.50 550.50 383.50 159.50 56.00 13.50 71.50 327.00 630.00 820.00 5130.00
2012791.00 667.00 -----z-----z298.00 180.00 33.00 9.50a96.00 323.00 507.50a719.00 3624.00b
2013890.00 631.00 566.00 412.00 240.00 94.00 11.00 8.50 101.00 413.00 -----z911.50 4278.00a
2014762.00 731.00 532.50 402.00 185.00 116.50 13.50 4.50 46.50 205.00 584.00 704.50 4287.00
2015680.00 -----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z680.00k
Period of Record Statistics
MEAN772.18 616.73 542.22 407.04 243.76 111.33 29.56 26.13 98.32 325.97 564.07 768.51 4515.63
S.D.109.47 82.17 68.67 69.97 61.97 46.55 16.80 17.66 42.86 60.05 88.60 94.24 311.41
SKEW0.78 0.05 -0.05 0.17 0.26 0.55 0.71 0.86 0.25 -0.25 0.59 0.36 0.90
MAX1125.50 856.50 667.50 550.50 383.50 216.00 75.50 72.50 205.23 472.00 793.00 996.72 5341.72
MIN588.00 433.50 396.00 284.00 126.00 44.50 3.00 1.00 20.50 205.00 438.50 613.00 4086.24
YRS44.00 44.00 43.00 43.00 39.00 44.00 45.00 41.00 43.00 45.00 43.00 41.00 29.00