HILLSBORO, OR

Monthly Sum of Growing Degree Days (Degrees Fahrenheit)

(353908)

Base Temperature = 50 F

File last updated on Apr 26, 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-----z0.00f5.00a5.00k
19300.00b5.00a46.55b105.50 107.00 220.09b385.86b448.39c284.30b55.00a12.50f0.00g1657.70b
19314.50f0.00b22.76b119.00a318.50a321.07b530.56d473.00 253.00a78.50a7.00a0.00b2123.39a
19320.00a21.50 12.50 79.00 161.50a415.50 389.00 480.50a411.91c133.50l20.08d2.31e1993.79a
19335.17b0.00k1.03b79.50 88.27e310.71b486.72b514.66b197.50 112.00h0.00h15.54c1699.11c
19340.00u0.54c97.22d250.56e166.03b272.91b461.00a514.00 277.57b146.00 18.50 0.50 2204.84a
19356.00 1.50a0.00 75.00 137.00a278.50 487.00 515.00 356.50 76.03b0.00 0.00a1932.53
19360.00a0.00 4.00a149.66b299.50 433.50 484.00a517.00 294.00 146.50a0.00 0.00a2328.16
19370.00 0.00a14.00 25.00 261.00 400.00a510.50 437.22d347.00 152.22d13.50 6.00 2166.44
19380.00a0.00 8.28b69.00 277.50 401.34b560.50a383.04c387.00a100.00 2.23d5.00a2193.88
19391.00a0.00e42.50a99.00 226.50 280.50 505.50 499.50 350.00 118.45b5.37c7.00a2135.32
19405.00a6.50 53.50a84.00 318.00 395.00a484.00 528.00 377.00b195.00 4.14b0.50 2450.64
19410.50a0.00 59.00 98.00 203.00 331.00a612.00 495.50 229.00 110.50 23.50a4.50 2166.50
19420.00 0.00a8.00 71.50 173.50 264.50 526.50 478.50a319.50 128.00 4.00 0.00 1974.00
19430.00a1.04b11.00 130.00 137.50 298.50 487.00 412.00 435.00 154.00 6.00 0.00a2072.04
19440.00 0.00d17.00 64.00 203.28b299.00 489.50 431.90b397.50 207.00 12.50 0.00 2121.67
19452.00 1.50 2.00 61.00 246.50 315.00 524.00 471.00 255.50 112.50 10.50a4.00 2005.50
19460.00 0.00 6.00 66.50 282.00 294.00 488.00 481.00 327.00 57.00a2.00 5.00 2008.50
19470.00 8.00 58.00 155.50 282.00 306.50 424.50 399.31b357.00 136.50 14.00 0.00a2141.31
19480.00 4.50 13.50 25.00 177.50a470.50 461.50a431.00 318.00 89.00a2.07b0.00a1992.57
19490.00a0.00 3.50 103.50a300.00 363.00a501.00 390.50g434.00a29.50 40.00 0.00 1774.50a
19500.00a2.00 7.24b36.00 164.50a387.00 503.00a584.00 401.50 101.50a18.50 14.00a2219.24
19510.52b14.00 2.00 128.50a232.50 437.50 567.50 490.00 419.50 137.50a5.70b3.50 2438.71
19520.50 1.50a11.50 117.00 249.00 298.06c576.72b520.00a441.21b278.50a0.00b5.00a2498.99
195322.00a4.00 17.07b59.00a155.50a235.50 512.50 490.86b388.50a152.00 28.00a0.00b2064.93
19542.00 0.50a0.00d39.88b236.00a223.50a388.50a386.90b309.50 108.62b30.50 0.00 1725.89
19550.00a0.00 0.00a21.50 116.50 314.50 384.00a451.00 350.50 127.50a27.00 1.00 1793.50
19560.50a0.00 5.50 131.00 313.00 239.50 570.50 510.00 347.00 108.62b3.00 7.50f2228.62a
19570.00 6.50 16.00a105.50a295.86b345.41b472.50 431.00a481.50a107.00a5.50 0.00a2266.77
19580.52b33.00a9.31b70.50 386.50 486.50a689.50a636.00a384.00 216.21b29.58e6.35e2947.96
19590.50a4.00 7.22d64.69d160.00a324.50 536.50a407.14c270.50a130.50a24.34b0.00a1929.90
19600.00b0.00b21.50a79.23b106.03b393.00 592.50a496.00 378.50a183.10b9.00 2.00 2260.87
196115.52b14.09e13.39c62.14b199.00 473.50a614.50 687.00 283.50a143.50 1.00a5.69b2512.83
19620.00b1.56b4.50a91.00a77.50 320.50 446.90b456.72b339.20b105.50 18.50a0.00a1861.87
19630.00b13.50 7.76b24.50a211.50a321.00 380.00 475.50 436.00a139.00 1.00g0.00 2008.76a
19641.50a0.00 19.00 12.00 106.50 256.50 431.50 367.50 216.50 104.00a2.00a1.00 1518.00
19653.50 0.50 6.00a76.00 110.50 257.00 516.00 497.50 250.50 153.50 19.00 3.00 1893.00
19660.00a0.00 21.50 63.00 185.00 278.50 430.50 427.50 337.50 81.00 13.50 3.00 1841.00
19674.50a0.00 2.00a3.50 164.00 404.00 557.50 700.00 423.50a127.00a16.00 2.50 2404.50
19689.50 47.50 26.50 42.00 164.50a328.50 508.00 434.00 320.00 68.00 14.00 0.00 1962.50
19690.00 0.00 24.00 53.50 257.59b482.50 438.50a398.50 339.00 68.50 28.00 0.00 2090.09
19709.50 8.50 8.50 12.50 190.50 426.00 519.00 489.00 242.50 91.50 24.00 2.50 2024.00
19711.00 2.00 12.50 59.50 214.00 224.00a543.00 594.50 291.00 115.00 2.50 0.00 2059.00
19721.00a6.00 68.00 22.50 282.00 368.50 599.00 577.50 277.00 112.50 10.50 14.00 2338.50
19730.00b5.00a3.00 51.50 225.00a328.50 550.50 396.00 339.50a78.50 5.50a1.00 1984.00
19741.50 0.00 22.50 43.50 142.00 392.50 478.50 529.50 452.50 110.50 13.50 8.50 2195.00
19753.50 6.00 5.50 9.00 189.00a291.00 517.50 399.50 400.50 97.00 20.50 15.00 1954.00
19762.00 1.00a9.00 52.50 185.00 252.50 452.50 438.50 376.00 131.50 35.50 0.00 1936.00
19770.00f8.00 0.00 102.00 86.00 371.00 427.50 609.00 299.00a109.66b12.00 17.00 2041.16a
19780.50 13.50 64.50a58.00 144.50a404.50a542.50 498.00 293.00 175.50 5.00a0.00 2199.50
19790.00 2.00 39.50 76.00 217.50 371.50 510.00a467.00 384.50a183.00 13.00 4.50 2268.50
19800.00 5.00 6.00 114.00 170.00 232.00 490.50 392.00 307.50 129.50a40.50 21.00 1908.00
19810.00 16.00 8.00 78.50 179.50 288.00 468.50 596.50 357.00 73.50 19.00 0.50 2085.00
19820.00 16.50 3.50 26.00a169.50a381.50a464.00 467.50a322.00 92.78d4.00a0.00 1947.28
19835.00 7.00a15.00a93.00 276.00 296.50 415.18c466.50a270.00 56.00 24.00 0.00 1924.18
19844.50 0.00a28.85e29.00a104.46c281.50 450.00c446.50a281.50a92.50 11.00a0.00a1729.81
19850.00 1.00 0.00c97.50a192.93b328.50a609.00 438.00a232.00 75.00 22.00 0.00 1995.93
19862.50 32.00 59.00 50.50 194.00 436.50 396.50 625.50 279.00 141.50 12.50 0.00 2229.50
19870.00 1.00 16.00 127.50 272.50 408.50a476.00 536.00 404.00 194.00 29.50 2.00 2467.00
19880.00 13.50a15.00 87.00 150.50a323.50a532.00 460.50 328.00 226.03b20.50 0.00c2156.53
19891.50a0.00a2.00 132.82e190.50a402.50 420.50 434.50 395.00 113.00 21.50 3.00 2116.82
19902.00 2.50 34.00 121.00 152.50a346.50 552.00a558.50 439.00 71.50 17.50a0.00a2297.00
19917.00 18.00 2.50 55.00 110.50 254.50a519.50 550.50 433.50 165.50a21.23b0.50a2138.23
199211.00a22.00 62.00 146.55b302.00a467.62b550.86b546.00 306.50 163.50 10.00 0.00 2588.04
19932.00 0.00 17.07b53.00 308.50a316.50 356.00a510.50 389.50a182.00 0.00a4.00 2139.07
19940.50 0.00b59.00 92.18b259.00 297.00a571.00 515.00 425.50a56.00 0.00a8.50a2283.68
199516.00 12.50a28.00 63.50 302.00 346.88d590.00 462.50 433.50 90.50a66.50 3.00 2414.88
19961.00 3.50 24.00 105.50 154.14b363.50 655.00 556.00 292.50 132.00 4.00 3.50a2294.64
19972.50 1.00a19.00a60.00 385.00 365.61b547.00a627.00 398.00a112.00 95.50 0.00 2612.61
19982.00 4.00a96.50 126.50a228.00a449.50a671.00a644.50 519.00 175.50 45.00 14.50 2976.00
19990.00a2.50 25.00 100.00 175.34b324.00a218.00q-----z-----z18.00s62.00a33.00 721.84d
20000.00a0.00d21.96c246.50b231.50f-----z-----z-----z-----z-----z-----z-----z268.46h
2001-----z-----z-----z-----z218.89d243.81c431.00a467.50 312.50 54.50a10.50h0.00n1728.20f
20023.00 3.00 0.00a39.00f170.50 389.89c411.00k263.50q168.00p105.52b9.00a3.50 684.41d
200313.00 0.00 43.00 49.50a227.50 -----z-----z-----z-----z-----z-----z-----z333.00g
Period of Record Statistics
MEAN2.47 5.64 20.83 79.62 205.85 339.62 503.16 493.59 345.82 122.32 17.00 3.74 2153.04
S.D.4.35 8.87 22.36 46.61 71.02 70.07 71.79 74.40 69.10 46.79 16.83 6.00 268.76
SKEW2.53 2.48 1.60 1.23 0.38 0.27 0.24 0.73 0.07 0.71 2.18 2.54 0.73
MAX22.00 47.50 97.22 250.56 386.50 486.50 689.50 700.00 519.00 278.50 95.50 33.00 2976.00
MIN0.00 0.00 0.00 3.50 77.50 220.09 356.00 367.50 197.50 29.50 0.00 0.00 1518.00
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