SUNNYSIDE, WA

Monthly Sum of Heating Degree Days (Degrees Fahrenheit)

(458207)

Base Temperature = 65 F

File last updated on Apr 21, 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
1894-----z-----z-----z-----z-----z-----z-----z-----z92.00q496.00 -----z1087.00 1583.00j
18951166.00 780.00 680.00 380.50 207.00 55.50 11.50 9.00 231.50 406.00 793.50 916.55b5637.05
18961007.50 681.50 716.00 478.50 290.00 77.50 0.00 2.50 144.50 433.50 878.06c896.00 5605.56
18971063.00 814.50 797.00 291.00 99.00 47.50 17.00 7.50 176.50 483.00 772.00 1016.00 5584.00
18981148.00 657.50 709.50 386.00 198.50 52.50 7.50 3.00 102.50 478.50 804.50 1170.00 5718.00
18991133.00 980.50 690.50 427.00 295.50 72.00 4.14b61.00 58.50 481.50 550.00 934.50 5688.14
1900910.00 849.50 515.00 372.50 156.00 16.00 15.00 35.00 161.00 471.00 834.00 790.50 5125.50
19011063.00 847.50a682.00 501.00a213.00 161.00 15.00 3.00a222.00 280.00 687.50a968.50 5643.50
19021108.00 815.00 646.00a481.50 212.00 103.50 44.50 32.00 161.00a392.50 724.00a1044.83b5764.83
1903951.00 950.50 702.50 482.12b245.00 33.00 37.00 21.50a179.00a427.50 736.15d1023.50a5788.78
1904942.00a900.00 739.50 346.50 245.00a103.00a30.00b30.50 123.00 406.00a575.17c938.00a5378.67
1905736.50h851.00a513.00a395.50 239.50a64.50 10.00 42.50 121.50 624.50 -----z1039.50 3901.50b
1906249.00t751.00 730.50a311.00 216.00a137.00 0.00 17.00 165.00a373.00 722.50a975.50 4398.50a
19071350.50 -----z-----z131.50v-----z-----z-----z-----z189.50 342.00 672.50 -----z2554.50h
1908-----z-----z-----z-----z137.00o105.00 13.50 53.00a135.50a428.50 661.00 1025.50 2422.00e
19091329.00 723.00 635.50 482.50 284.00 32.00 14.50 38.00a121.00 419.00 647.84b1180.50 5906.84
19101089.00 917.00 468.50 286.50a104.50a80.00 5.00 73.00 154.00 342.50a753.50 914.50 5188.00
19111026.50 861.50 572.00a450.50 289.50 64.00a20.50 9.50 219.50 469.50 768.00 1018.00 5769.00
19121128.21c734.50 725.00 402.00 158.50a39.50 23.00 58.50 205.00 555.50 696.50 944.50 5670.71
19131119.83b997.00 697.24b382.00 229.00 34.00 30.50 24.50 167.50 498.00 686.50 1037.00 5903.07
1914854.00 813.00 556.03b364.50 140.00 134.00 4.50 3.50 231.00 389.50 697.50 1277.00 5464.53
19151207.50 703.00a506.00 271.00 190.50 43.00 12.00 3.00 128.00 336.50 759.00 950.50 5110.00
19161393.00 841.00 544.50 335.00 228.50 75.00 21.50 19.66b114.00 430.00 897.50 1183.50 6083.16
19171108.50 805.00 785.00 468.50 217.00a87.50 6.50 0.00 66.00 347.50 656.00 661.00a5208.50
1918834.50 810.00 598.50 374.50 233.00 29.50 3.00 13.50a27.96b314.50 709.50 834.00a4782.46
1919989.00 724.50a595.00 351.00 205.50 92.00 11.50a0.50a135.50 477.50 753.50 1207.78d5543.28
19201063.97b803.50 629.50 496.00 285.00 89.50a0.00 33.50a107.00 389.00 734.50 917.50 5548.97
1921935.50 728.00 551.50a424.50 163.00 28.00 11.50 10.50 210.00 357.50 768.00 1058.00 5246.00
19221414.50 874.50a715.00 458.50a227.50a7.00 0.00 10.00 76.00a353.00 805.00 1196.00 6137.00
1923844.00 957.50 645.00 345.50 169.00 59.50 4.50 0.00a79.50 391.50 664.00 952.00 5112.00
19241131.50a618.50 626.00 377.00 96.50 15.50a10.00a15.00a137.50 390.50a786.00 1180.00a5384.00
1925898.50 599.50 556.50 269.00 112.00 112.50 0.00 48.50 97.50 400.50a800.00 858.50 4753.00
1926935.50a597.00a483.50 238.00 200.50 27.00 1.50 7.50a233.00 376.50 707.00 1100.00 4907.00
19271134.00 706.00 643.50 428.00a262.00 9.50 2.50a18.62b140.00 401.00 626.50 1119.00 5490.62
19281108.50 804.00 551.00 451.57b114.83b63.00 0.00a2.00 120.50a387.00 743.50 1050.00 5395.90
19291393.00 1169.50 589.00a470.00 187.76b53.50a7.50 12.00a166.75b358.00 874.50 898.45b6179.96
19301577.00 645.00a532.00 267.44c190.00a86.50a2.00 0.50a100.00a473.04c754.50a1003.00 5630.98
1931901.03b705.00a593.00 359.50 98.50 59.00 2.00 2.50 112.00 403.50 838.50 1221.00 5295.53
19321137.50 873.00 611.50 337.50 182.50 35.00 16.50a30.50 120.50 416.50 665.00a1075.56d5501.56
1933996.00 963.00a667.50a388.91b274.50a49.50 1.50 15.00 197.00a300.00b693.00a736.15e5282.06
1934782.68c644.00a461.50 179.00a133.50a34.00 7.00 1.50 151.50a317.50 578.96b836.54e4127.68
1935965.50 742.50b681.50 453.00 175.00 36.50a18.00 23.00 70.00 445.50a919.50 1062.00 5592.00
1936898.39c1192.07b689.00 288.00 104.50a33.66b1.00 5.50 127.00 323.00 895.00a927.22d5484.35
19371549.50 993.50 601.50a451.00 173.00 51.00 6.00 45.50a109.50 307.50a620.81c903.10b5811.92
1938910.50a822.00 670.00 361.00 204.00 43.50 3.00 11.50 30.50 372.50 834.00 936.50 5199.00
1939868.97b812.50a583.00 326.00 135.50 87.50 10.50 11.50 78.00 393.00 746.50 807.50a4860.47
19401056.00a793.50 520.50 351.00 140.50 28.00 1.50 3.50 47.50a329.50 873.00a957.50a5102.00
19411007.50 739.50 509.50 318.50 221.50 57.00a0.00 40.00 185.50a459.50 668.00a865.71c5072.21
19421218.00a783.50 679.50 369.00 220.50 100.98b7.50 26.50 70.00 354.50 809.50 988.50a5627.98
19431268.04c798.00 724.50 305.57c277.00 99.50 20.50 19.00 40.00 422.50 766.00 993.00a5733.61
19441086.00 827.50 735.50 399.50 189.00 37.50 7.50 5.00 81.00 283.50 804.00 1076.00 5532.00
1945902.07b710.50 697.50 432.50a137.00a82.00a5.50 13.50 156.50 358.00 742.00a993.00a5230.07
1946891.21b723.00 621.50a378.50 107.50 86.00a4.50a6.50 147.00 473.79b827.04c902.78d5169.31
19471111.00 681.23b513.50a300.00 74.50a52.00a0.00 24.00 80.00 381.50 708.00 911.00a4836.73
1948959.48b884.50a712.00a489.00 248.00a10.00 17.50 18.00 134.00a449.00 757.50 1124.00 5802.98
19491475.00 912.50 646.00 317.00 120.50 61.50 11.00 21.50 80.50 489.00 575.00 888.50 5598.00
19501510.50 929.00 680.50 472.00 231.00 59.00 8.50 1.50 71.00 390.50a686.50 831.00 5871.00
1951949.00 762.00 753.00 329.00 148.00 46.00 9.00 16.50 73.00 412.50 752.50 1071.00 5321.50
19521177.00 762.00 629.00 295.02d141.50 66.00 0.00 29.50 60.50 233.00 893.00 937.50 5224.02
1953666.00 627.50 586.50 435.00 236.50 113.50 2.50 8.00 72.00 320.00 620.00 799.50 4487.00
19541027.50 737.00 703.50 421.50 167.50 110.00 17.00 28.00 127.50 507.50 575.00a968.00 5390.00
19551033.50 752.00a776.00 548.00 266.50 49.00 48.00 18.50 199.00 383.50 941.50 1056.72b6072.22
19561007.00 1121.00 654.00 323.50 128.00 86.00 0.50 15.00 74.00a393.50a810.50 960.00 5573.00
19571438.00 811.00a653.00 364.50 69.50 33.50 12.50 16.50 62.00 450.00 736.00 799.50a5446.00
1958859.00 570.50 658.50 431.00 82.00 15.00 4.00 5.50 130.00 384.50 696.00a901.00 4737.00
1959970.00a788.00 622.50 360.50a290.50 47.50 19.50 25.50 138.00 385.00 815.00 982.50 5444.50
19601283.00 790.50 658.00 378.50 254.00 52.50 2.00 60.00 96.50 341.50 682.00 1108.00 5706.50
1961937.50 604.00 590.50 393.00 215.50 31.00 2.50 1.50 148.00 438.00a842.55b915.50 5119.55
19621021.50 748.50 737.50 308.50 287.50 87.50 37.50 24.50 96.00a405.50 651.50 862.50 5268.50
19631167.00 761.00 589.00 468.50 209.50 53.00 20.00 16.00 40.50 338.50 630.50 1047.00 5340.50
1964854.50 722.00a692.00 450.54b262.00 53.00 11.50 48.50 143.00 420.00 782.50 1135.00 5574.54
19651037.00 655.50 666.50 320.50 213.00 46.00 15.00 31.50 136.00 317.00 593.50a935.69b4967.19
1966905.00a726.50 606.50a338.50 170.50 88.00a23.00 14.00 59.50a387.00 607.50a790.50a4716.50
1967760.50 624.00 622.50 527.00 167.00a18.00 3.00 0.00 28.50 362.50 686.00 902.07b4701.07
1968910.00 619.00a510.50 446.50 165.50 41.50 4.50 30.50 88.00 480.50a680.00a1011.00a4987.50
19691329.00 920.00 609.50 411.50 136.00 25.00 5.50 32.00 94.50 502.50 716.50 965.50 5747.50
19701084.50 638.50a614.50a500.00 204.50 41.00 5.50 1.00 208.00 475.50 750.50 1034.00 5557.50
1971851.50 715.00 756.50 446.50 152.00 113.50 29.50 6.50 204.00 469.00 737.50 984.00 5465.50
19721048.00 868.00 584.50 479.50 153.50 30.50 12.50 7.50 212.50 426.00 720.50 1137.50 5680.50
19731067.00 724.00a596.00 367.50 182.00 78.00 15.00a34.50 111.50 419.50 771.50 851.00 5217.50
19741124.50 674.50 619.50 394.00 266.00 44.50 26.50 5.00 65.00 407.00 678.00 868.00 5172.50
1975950.00 832.50 696.00 522.00 206.00 55.00 3.00a17.00a91.50a419.00 729.50 894.00 5415.50
1976903.00 771.50 665.50 430.00 176.50 123.00 16.50 29.00 47.50 419.50 689.50 1061.50 5333.00
19771184.00a667.00a601.00a274.00 277.00 22.50 20.50 9.50 153.50 417.50 761.00a896.00 5283.50
1978988.50 703.00 511.00 384.50 234.00 30.00 1.00 13.00a123.00a409.00 909.00 1051.00 5357.00
19791522.50 840.50 564.50 384.50 132.50 41.50a17.50 0.00 41.50 290.50 891.50 907.50 5634.50
19801264.50 900.00 621.00 299.50 169.50 69.00 8.00 26.50 88.00 397.00 688.00 871.50 5402.50
1981834.50 731.50 488.00 378.00 192.50 84.00 27.50 2.00 113.50 441.50 636.00a977.50a4906.50
19821135.00 688.00a600.50a492.00 203.00a41.50a22.00 3.00 112.50 431.90b826.00 1025.00 5580.40
1983837.00 631.00a488.00 390.50 163.39c56.50 19.82c0.00a152.50a411.00a581.00a1252.00a4982.71
19841005.00 728.50a517.00 422.05b263.79b78.94c0.50 4.50 156.00a481.50 749.50 1151.38b5558.67
19851155.50 891.00a619.00 294.50a143.00a28.00 0.00 15.56d163.26c399.50a1026.15d1318.50 6053.97
1986923.79b666.00a474.00 403.00 192.41b9.00a21.21b0.00b219.24e298.00h533.00h854.50f2908.65c
19871030.96e711.98e583.27e292.32e124.66b53.94e7.50c2.00a68.20c325.71c520.00f841.00f3200.54b
1988981.67d515.50f553.00a242.00g169.50a79.23b10.50 0.00a94.25b168.21c570.52d751.50g2626.88c
1989651.00g982.00a611.11d245.43c154.29c14.50a7.00 0.00b58.52b296.00h595.62d980.17b3648.63b
1990762.41b743.00 521.00a233.50 181.50 47.50 5.89c2.00 0.50 447.00 599.00 1128.46e4671.77
19911080.52b400.50j-----z-----z188.00a94.00 0.00a1.07c34.00 368.00a690.00a891.00 3346.59c
1992858.50 635.00a442.50 298.00 93.00 11.50a1.55b22.50 140.00 346.50 749.00 1050.00a4648.05
19931207.00a933.00 730.00 402.50 103.50 52.50 11.50 24.50 115.50 333.50 592.50g938.50 4852.00a
1994815.50a835.50 521.00 264.00 110.50 51.00 4.50 0.00a24.50 374.00a790.50 881.00a4672.00
19951011.50 616.50 621.00 401.00 122.50 52.50 0.50 22.50a51.00 411.50a645.50 967.00 4923.00
19961048.00 921.50 600.50 357.00 285.00c42.50 6.50a7.22d156.50a423.75c802.00 -----z4650.47a
1997-----z-----z540.00 407.04b111.00 37.50 3.00 1.00 71.50 381.50a659.50 979.50 3191.54b
1998943.50 647.00 533.50 367.00 154.14b6.50a0.00 1.50 30.50 404.50 -----z-----z3088.14b
1999-----z-----z-----z-----z-----z72.50b7.50a15.50 -----z390.54c509.82e790.00a1785.86f
2000918.50a752.00 567.00 256.50 127.50 34.50 5.17b3.00a103.73d361.61c831.50a1021.50 4982.51
2001937.50 753.00 537.78d382.50a148.00 44.00a0.00a1.00a42.50 253.50h615.50a846.21b4307.98a
2002825.50 673.50a667.50a346.50 167.00 35.00 2.00 6.50 71.50a419.00 682.54b879.00 4775.54
2003797.50 662.00a468.00 350.50 184.00 22.50 1.50a2.00 56.00 224.50a627.00g946.50a3715.00a
20041111.50 762.50a440.00 318.00 130.00 60.50 0.50a3.00 65.25b316.67d688.00a866.50a4762.42
20051035.50 729.00b491.00a324.37c100.00 50.50 0.00 1.00 98.50a344.00a792.13c1158.50a5124.50
2006844.50 797.50 607.24b372.50 192.50a22.00a0.00 4.00a77.52d381.00 704.00 1101.50 5104.26
20071083.00 727.50a554.50 390.50 132.50 52.00 0.00 5.00 95.50 432.50 743.50 972.00 5188.50
20081064.50a689.50a650.56d519.00a163.50a84.00a1.50 14.50 104.00 431.00 671.50 1222.50 5616.06
20091039.50 847.50 739.00 443.50 212.50 13.50 0.00c2.50 80.50 387.00j732.81d1297.50 5408.81a
2010935.50 670.00a663.50 458.50a366.50 78.00 30.00 38.00 132.50 450.00 855.00 978.00 5655.50
2011984.50 861.50 716.50 596.00 360.00 128.00 37.00 6.00 106.50 453.50 839.50 1111.50 6200.50
20121057.00 833.00 697.00 447.00 301.50 142.00 13.00 24.50 118.50 479.00 718.50 938.00 5769.00
20131141.00 774.50 677.50 479.00 251.50 83.50 2.50 -----z-----z-----z-----z-----z3409.50e
2014-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
Period of Record Statistics
MEAN1049.36 780.29 617.35 384.99 188.87 58.20 10.08 15.83 114.74 399.10 732.60 989.18 5362.37
S.D.182.26 118.56 83.31 77.26 62.27 32.46 10.44 15.78 53.75 66.52 94.76 125.47 403.73
SKEW0.85 0.89 -0.10 0.02 0.37 0.73 1.36 1.27 0.33 -0.21 0.25 0.34 -0.31
MAX1577.00 1192.07 797.00 596.00 366.50 161.00 48.00 73.00 233.00 624.50 1026.15 1318.50 6200.50
MIN666.00 570.50 440.00 179.00 69.50 6.50 0.00 0.00 0.50 168.21 509.82 661.00 4127.68
YRS113.00 113.00 115.00 114.00 116.00 118.00 118.00 117.00 117.00 115.00 112.00 113.00 101.00