HILLSBORO, OR

Monthly Sum of Growing Degree Days (Degrees Fahrenheit)

(353908)

Base Temperature = 40 F

File last updated on Sep 02, 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
1929-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z46.50f103.50a103.50k
19308.79b120.00a241.55b389.50 389.50 510.09b685.86b748.39c574.30b298.50a111.50f19.00g3966.49b
193194.50f51.40b201.72b381.50a618.00a611.07b830.56d783.00 543.00a350.50a104.50a36.21b4511.46a
193234.50a93.50 191.50 325.00 453.00a715.50 699.00 780.50a701.91c311.00l184.04d70.38e4248.83a
193362.07b28.00k138.62b319.00 361.15e600.71b786.72b814.66b495.50 329.50h64.50h161.79c3740.22c
193450.00u135.00c376.67d540.56e466.03b559.80b761.00a824.00 561.88b440.50 222.50 63.50 4951.44a
193555.00 89.00a53.50 298.50 422.50a578.50 797.00 825.00 656.50 285.00b63.50 50.50a4174.50
193685.50a38.00 101.50a382.70b609.50 733.50 784.00a827.00 594.00 416.50a66.00 74.50a4712.70
19370.00 58.00a230.00 274.50 570.50 690.00a820.50 737.22d643.50 442.78d227.50 113.00 4807.50
193852.50a64.50 157.24b351.00 574.00 691.34b860.50a683.04c677.00a399.00 90.90d79.50a4680.52
193978.00a28.17e213.00a365.00 534.00 580.00 815.50 809.50 650.00 392.07b130.50c148.00a4743.74
194067.50a161.50 300.00a373.50 628.00 685.00a794.00 838.00 667.00b486.00 102.02b107.00 5209.52
194183.50a138.00 340.50 379.50 506.00 621.00a922.00 805.50 529.00 413.00 182.50a88.00 5008.50
194226.00 59.50a124.50 320.50 457.50 564.50 836.50 778.50a619.50 413.00 107.50 85.00 4392.50
19439.50a93.46b133.00 408.50 435.50 598.50 797.00 722.00 735.00 425.00 118.00 50.00a4525.46
194441.50 58.24d149.50 305.00 490.34b599.00 799.50 731.90b697.50 515.50 129.00 39.00 4555.98
1945104.50 113.00 139.00 285.00 556.50 615.00 834.00 781.00 554.00 370.00 142.50a103.00 4597.50
194654.00 60.50 195.00 310.50 592.00 594.00 798.00 791.00 627.00 309.00a93.50 118.50 4543.00
194743.00 142.50 297.00 435.50 592.00 606.50 734.50 699.31b657.00 438.50 178.00 47.00a4870.81
194830.00 80.50 134.00 216.00 468.00a770.50 761.50a741.00 617.00 348.00a93.21b20.50a4280.21
19490.00a65.50 177.00 372.00a603.00 653.00a811.00 630.50g724.00a250.50 264.00 70.00 3990.00a
19504.50a103.50 133.97b252.50 440.50a687.00 803.00a894.00 699.00 343.00a170.00 192.00a4722.97
195147.59b102.50 99.50 406.00a539.00 737.50 877.50 800.00 719.50 407.50a160.02b37.00 4933.60
195227.50 66.50a138.00 387.00 542.00 588.06c876.72b820.00a731.21b575.00a71.46b58.50a4881.96
1953219.50a104.00 168.62b266.00a445.00a535.50 822.50 790.86b678.50a453.00 236.50a93.62b4813.60
195447.50 92.50a131.11d270.84b531.00a513.50a688.50a686.90b609.50 369.31b271.00 55.50 4267.16
195521.00a41.50 62.00a176.50 402.00 614.50 684.00a761.00 650.50 404.50a162.00 60.00 4039.50
195676.50a17.00 156.50 402.00 618.00 539.50 880.50 820.00 647.00 345.52b106.00 91.50f4608.52a
19577.00 104.00 223.00a371.50a595.86b635.41b782.50 731.00a771.50a397.50a124.50 117.00a4860.77
1958112.76b238.50a180.52b331.00 696.50 776.50a989.50a936.00a682.00 506.38b187.92e141.35e5778.92
1959107.50a83.50 186.67d326.25d441.00a624.50 836.50a707.14c560.50a405.00a139.82b34.50a4452.88
196023.28b70.00b170.00a290.52b380.17b693.00 892.50a806.00 668.50a462.93b180.00 52.50 4689.40
1961165.00b188.41e221.25c296.21b502.50 763.50a924.50 997.00 572.50a396.00 103.00a98.28b5228.15
196268.79b106.96b141.50a349.50a375.00 617.50 746.90b756.72b629.20b394.50 207.00a69.00a4462.57
196320.17b207.50 143.79b221.00a495.50a621.00 690.00 785.50 726.00a402.50 124.50g54.00 4366.97a
196466.50a58.50 128.50 205.00 363.00 556.50 741.50 677.50 516.50 374.50a80.00a88.00 3856.00
196558.00 87.00 186.00a307.50 376.00 556.00 826.00 807.50 547.00 451.00 229.00 59.50 4490.50
196646.00a64.00 169.50 325.50 473.50 576.00 740.50 737.50 637.50 340.50 226.50 123.00 4460.00
1967101.50a90.00 109.00a164.00 454.00 704.00 867.50 1010.00 713.50a417.00a220.50 108.00 4959.00
196896.00 245.00 259.50 243.00 454.00a628.50 818.00 744.00 620.00 346.00 184.00 48.00 4686.00
196910.00 49.00 207.00 297.00 543.10b782.50 738.50a708.50 639.00 351.50 187.50 96.00 4609.60
1970114.50 185.50 220.50 218.00 482.50 726.00 829.00 799.00 540.50 362.50 195.50 52.50 4726.00
197193.00 105.00 141.00 292.00 513.50 514.00a853.00 904.50 587.50 338.50 149.00 35.00 4526.00
197264.00a127.50 270.00 210.50 592.00 668.50 909.00 887.50 565.50 367.00 197.00 112.00 4970.50
197360.52b140.50a181.50 306.50 512.50a628.50 860.50 706.00 629.50a375.00 104.50a136.50 4642.02
1974113.00 74.00 220.00 308.50 431.00 692.50 788.50 839.50 752.50 407.00 188.50 133.50 4948.50
197599.50 76.50 155.00 196.50 480.50a591.00 827.50 709.50 700.50 378.00 148.50 127.00 4490.00
1976100.00 68.50a125.00 276.50 484.50 550.00 762.50 748.50 676.00 418.00 212.50 27.50 4449.50
197739.00f126.50 121.50 357.00 387.00 671.00 737.50 919.00 589.00a392.59b151.50 126.00 4578.59a
1978103.00 183.00 289.50a308.50 433.50a694.50a852.50 808.00 593.00 449.00 80.50a27.50 4822.50
19797.50 104.00 271.50 324.00 524.50 671.50 810.00a777.00 674.50a476.50 128.50 136.00 4905.50
198021.00 104.00 171.50 367.00 476.00 532.00 800.50 702.00 607.50 393.50a207.00 139.50 4521.50
198189.50 125.50 230.00 310.50 475.00 588.00 778.50 906.50 657.00 367.00 216.50 103.50 4847.50
198253.50 111.00 153.00 193.00a455.50a671.50a774.00 767.50a621.50 367.22d98.00a71.50 4337.22
1983115.00 161.50a274.00a330.00 576.50 596.50 715.18c766.50a570.00 344.00 241.50 40.00 4730.68
1984120.00 105.50a264.81e246.00a387.32c581.50 750.00c746.50a571.50a304.00 144.50a7.50a4229.13
19852.50 50.00 95.36c342.50a471.72b618.50a919.00 738.00a532.00 335.50 83.50 10.00 4198.58
198685.00 131.50 335.50 281.50 479.50 736.50 706.50 935.50 579.00 451.00 189.00 34.50 4945.00
198767.50 130.50 236.50 385.00 582.50 698.50a786.00 846.00 704.00 502.00 228.00 71.50 5238.00
198832.50 126.00a195.50 339.50 428.50a613.50a842.00 770.50 628.00 521.38b190.50 43.93c4731.81
198969.00a31.50a162.00 401.94e490.50a702.50 730.50 744.50 695.00 391.50 201.00 60.50 4680.44
199095.00 86.00 258.00 399.50 446.00a646.50 852.00a868.50 739.00 354.50 151.50a34.00a4930.50
199165.00 217.00 136.50 296.50 408.50 544.50a829.50 860.50 733.50 402.00a187.98b57.50a4738.98
1992105.00a234.50 350.00 400.82b600.00a757.62b850.86b856.00 606.50 460.00 160.50 27.00 5408.81
199342.50 62.50 247.24b331.50 607.50a616.50 656.00a820.50 679.50a488.50 45.00a80.00 4677.24
1994124.50 48.81b292.00 365.61b569.00 587.00a881.00 825.00 715.50a322.50 38.00a92.00a4860.91
1995142.50 193.50a223.50 294.50 612.00 636.88d900.00 772.50 733.50 355.00a305.00 97.00 5265.88
199685.00 117.00 236.00 381.50 440.17b663.50 965.00 866.00 592.50 378.50 147.00 78.50a4950.67
199782.00 83.50a191.00a315.00 692.50 655.61b847.00a937.00 688.00a402.00 378.50 71.50 5343.61
1998157.00 180.00a325.00 402.00a528.00a739.50a971.00a954.50 819.00 470.00 305.50 134.00 5985.50
1999101.50a148.00 205.50 350.50 460.86b614.00a358.00q-----z-----z128.50s294.00a231.00 2405.36d
200041.00a113.12d256.61c526.66b480.50f-----z-----z-----z-----z-----z-----z-----z937.39h
2001-----z-----z-----z-----z501.67d533.81c731.00a777.50 612.50 270.00a136.50h12.00n3426.48f
200237.50 70.00 82.50a240.50f458.50 679.89c611.00k403.50q308.00p366.72b178.50a103.50 1977.11d
2003149.00 122.00 257.00 290.50a526.50 -----z-----z-----z-----z-----z-----z-----z1345.00g
Period of Record Statistics
MEAN68.58 107.14 195.69 323.22 500.14 635.41 809.59 800.84 641.96 396.34 166.08 81.66 4739.96
S.D.44.67 52.27 70.98 71.96 79.23 69.98 72.29 75.82 68.83 62.09 67.51 43.47 379.84
SKEW0.64 0.80 0.41 0.22 0.33 0.24 0.18 0.71 0.07 0.29 0.48 0.78 0.68
MAX219.50 245.00 376.67 540.56 696.50 782.50 989.50 1010.00 819.00 575.00 378.50 231.00 5985.50
MIN0.00 17.00 53.50 164.00 361.15 510.09 656.00 677.50 495.50 250.50 38.00 7.50 3856.00
YRS70.00 72.00 73.00 72.00 73.00 72.00 70.00 69.00 70.00 69.00 68.00 70.00 60.00