PROSSER 4 NE, WASHINGTON

Monthly Total Heating Degree Days

(456768)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1925 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.00
1926 0.00 z 455.00 h 396.50 f 267.32 b 227.33 a 25.80 e 0.00 f 8.50 238.85 d 294.00 g 694.29 b 1075.38 b 2537.47
1927 851.50 h 718.67 a 651.00 a 452.50 320.50 33.50 4.00 29.00 177.60 e 416.12 e 438.50 i 881.00 g 2802.88
1928 0.00 z 0.00 z 0.00 z 517.50 d 137.00 f 95.00 f 0.00 z 0.00 z 0.50 z 341.60 e 536.50 h 1002.73 e 1861.83
1929 1343.52 c 1188.50 623.32 c 473.28 a 244.38 a 89.44 c 8.35 e 21.81 d 183.00 e 337.12 c 724.00 f 942.83 b 5455.56
1930 1603.50 524.00 f 529.14 b 329.46 b 241.91 c 82.00 g 4.02 d 1.50 h 100.18 b 510.98 a 500.00 k 1039.61 c 4358.80
1931 907.00 747.50 604.00 356.50 117.50 68.00 2.00 0.50 114.83 a 394.50 825.00 1197.00 5334.33
1932 1126.85 a 886.50 616.00 355.00 226.50 71.50 21.50 37.00 102.00 370.93 b 634.50 1061.50 5509.78
1933 946.50 1003.00 674.00 422.00 316.50 72.50 3.50 19.00 196.50 285.00 689.50 727.00 5355.00
1934 786.50 643.50 458.50 197.00 158.50 49.50 5.00 4.00 180.00 311.50 599.00 882.50 4275.50
1935 975.50 763.50 725.00 523.50 258.50 98.50 35.00 44.00 71.50 477.50 911.00 1038.50 5922.00
1936 924.00 1228.00 669.50 295.50 127.50 57.50 5.00 7.00 159.00 e 324.47 a 953.00 908.50 5658.97
1937 1562.00 967.56 a 585.50 470.00 247.50 70.00 9.00 46.00 128.50 326.00 648.10 a 909.00 5969.16
1938 951.00 835.00 664.90 b 375.00 248.50 56.50 5.00 30.00 45.50 398.00 851.50 936.50 5397.40
1939 905.00 833.50 587.00 339.00 152.00 96.50 10.33 a 10.50 98.00 415.50 761.50 825.50 5034.33
1940 1110.00 772.00 524.50 387.00 159.00 46.50 6.50 13.50 79.00 356.00 934.50 999.50 5388.00
1941 1019.50 761.50 516.50 354.50 256.00 82.00 0.50 35.00 202.00 441.00 665.00 911.00 5244.50
1942 1272.00 803.50 677.00 389.50 255.00 135.50 13.50 27.50 68.00 369.50 824.00 974.00 5809.00
1943 1303.50 779.00 722.00 354.00 334.00 141.00 26.00 25.00 60.50 427.50 768.00 1027.00 5967.50
1944 1091.50 830.50 714.50 437.50 235.00 76.00 20.00 14.50 98.50 291.00 788.00 1071.00 5668.00
1945 901.50 699.00 695.00 490.00 194.00 121.50 10.50 16.50 171.50 347.00 763.50 1018.00 5428.00
1946 924.50 719.70 a 636.50 413.00 135.50 106.50 10.50 10.00 159.50 513.50 845.00 908.00 5382.20
1947 1133.50 716.50 538.50 328.00 98.00 72.00 1.00 34.00 90.00 397.00 740.50 948.50 5097.50
1948 1034.00 925.00 741.50 522.50 286.00 16.00 31.50 29.97 a 166.00 478.00 756.00 1123.00 6109.47
1949 1526.50 904.00 675.50 365.00 162.00 90.50 31.00 a 34.50 101.50 531.50 610.00 898.50 5930.50
1950 1553.50 950.50 717.13 a 496.50 299.50 93.00 13.00 f 9.00 101.00 445.50 707.00 840.00 6212.63
1951 971.50 796.00 797.50 398.40 e 217.50 62.50 11.50 28.50 101.00 445.00 793.97 a 1112.50 5735.87
1952 1228.00 789.50 682.00 a 369.50 192.50 96.00 21.00 31.00 80.50 265.00 934.50 690.50 h 4689.50
1953 678.38 a 670.00 634.00 482.00 318.50 174.50 8.50 18.00 h 95.00 359.00 648.00 833.79 b 4901.68
1954 1097.50 769.00 783.50 470.50 154.00 i 155.50 26.50 41.00 132.50 493.00 593.50 991.50 5554.00
1955 1061.50 832.00 831.50 586.00 327.00 81.50 73.33 e 20.00 150.50 416.00 965.50 1090.00 6434.83
1956 1039.00 1171.00 678.50 347.00 165.50 121.00 7.00 32.00 88.50 435.00 840.00 947.00 5871.50
1957 1480.50 799.68 c 688.50 416.50 123.00 58.00 33.00 37.72 a 74.00 478.00 754.50 830.00 5773.40
1958 862.50 580.74 a 702.50 476.50 114.50 29.00 5.50 10.50 152.50 392.50 722.00 921.00 4969.74
1959 1012.00 810.00 659.50 397.50 323.50 77.50 36.00 51.00 173.00 416.00 843.00 1002.00 5801.00
1960 1327.50 793.00 692.50 427.50 296.00 71.00 4.00 79.00 116.50 370.00 679.50 1119.00 5975.50
1961 926.50 589.00 619.00 432.50 256.00 45.00 10.00 3.50 187.50 461.00 872.50 929.50 5332.00
1962 1025.50 755.50 756.50 335.00 326.50 98.04 b 46.00 28.00 99.00 408.00 636.50 849.00 5363.54
1963 1164.00 737.50 606.00 477.50 227.50 75.50 29.00 23.00 50.00 324.00 646.00 1047.00 5407.00
1964 0.00 z 744.00 699.50 474.50 280.50 68.00 13.00 56.00 147.00 424.50 765.50 1104.00 4776.50
1965 994.50 656.50 701.50 366.50 249.50 65.00 23.00 38.00 160.00 295.50 617.00 949.50 5116.50
1966 923.50 724.50 637.50 362.00 188.50 117.50 25.00 14.50 56.00 396.50 632.00 806.50 4884.00
1967 749.50 604.50 649.50 569.44 c 225.00 29.00 0.00 a 0.00 29.50 359.50 706.00 942.50 4864.44
1968 923.00 673.50 527.50 463.00 224.50 82.00 15.00 44.00 134.50 528.00 736.50 1105.50 5457.00
1969 1394.50 957.00 644.50 452.00 149.00 44.50 24.50 42.00 133.00 545.50 740.00 1007.50 6134.00
1970 1113.00 714.00 652.00 531.00 243.00 78.00 20.00 9.50 244.50 496.00 765.50 1039.50 5906.00
1971 868.50 720.50 788.00 478.50 191.00 172.50 63.50 16.00 280.50 524.50 744.00 1010.17 b 5857.67
1972 1050.50 871.00 592.00 521.50 190.00 59.00 18.00 17.50 238.50 449.00 758.00 1169.50 5934.50
1973 1081.00 771.00 614.50 411.00 224.50 105.00 29.00 54.00 150.00 459.50 793.00 852.50 b 5545.00
1974 1139.00 706.50 646.00 443.00 318.00 70.50 46.50 22.00 93.00 458.00 715.00 895.50 5553.00
1975 1012.50 888.22 a 756.00 580.50 273.00 105.50 9.50 54.50 127.50 464.00 778.00 950.50 5999.72
1976 944.00 826.50 746.00 480.50 221.50 147.00 23.50 47.00 76.50 449.00 748.50 1061.00 5771.00
1977 1276.00 733.50 666.50 310.50 315.50 28.00 45.00 21.50 199.00 470.00 795.50 932.00 5793.00
1978 1036.50 742.00 567.00 439.50 292.95 a 52.00 12.00 42.50 168.50 440.50 948.00 1085.00 5826.45
1979 1555.00 813.00 587.00 435.50 169.50 72.00 24.00 0.50 63.00 334.50 929.00 908.00 5891.00
1980 1303.00 933.00 683.00 350.00 228.50 136.50 27.00 54.50 129.00 456.50 737.50 876.50 5915.00
1981 890.50 756.00 553.50 432.00 253.00 118.50 48.00 6.00 152.00 473.00 708.00 1028.50 5419.00
1982 1142.00 769.50 665.50 532.00 241.50 70.50 39.00 16.00 158.00 492.50 851.00 995.50 5973.00
1983 839.50 690.50 534.50 439.00 230.00 111.50 48.50 5.50 199.00 459.00 613.50 1279.27 a 5449.77
1984 997.00 763.50 556.00 0.00 z 318.00 113.00 5.50 16.50 196.00 525.00 752.50 1148.50 5391.50
1985 1193.50 935.50 678.00 342.00 184.50 51.50 0.00 31.00 213.50 437.50 1121.00 1317.00 6505.00
1986 949.00 718.00 507.50 449.00 0.00 z 0.00 z 0.00 z 0.00 198.10 a 341.00 709.00 1064.50 4936.10
1987 1040.57 a 0.00 z 559.00 292.50 136.00 37.00 20.00 9.50 79.50 361.00 679.00 1036.00 4250.07
1988 1039.50 692.00 617.50 349.50 231.00 110.50 19.50 4.50 139.50 232.50 628.00 1017.50 5081.50
1989 885.57 a 1080.00 684.07 a 0.00 z 213.00 37.50 17.50 11.00 0.00 z 403.00 621.50 1023.00 4976.13
1990 788.00 772.59 a 588.50 293.50 250.00 72.50 12.00 12.00 16.50 0.00 z 609.00 1209.50 4624.09
1991 1117.00 0.00 z 650.50 418.50 241.00 139.50 0.00 z 5.00 0.00 z 414.00 725.00 874.72 a 4585.22
1992 0.00 z 0.00 z 0.00 z 333.00 148.00 35.00 8.50 37.00 180.50 356.50 743.00 1082.00 2923.50
1993 1269.97 a 954.50 0.00 z 439.00 125.50 101.50 45.50 42.50 147.50 375.00 929.50 940.50 5370.97
1994 834.00 851.41 a 561.00 0.00 z 174.00 111.50 12.50 3.00 0.00 z 0.00 z 0.00 z 0.00 z 2547.41
1995 0.00 z 0.00 z 0.00 z 0.00 z 171.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 171.00
1996 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 172.00 446.50 824.50 1080.00 2523.00
1997 1007.50 713.00 591.00 424.50 125.00 33.50 2.00 0.00 72.00 398.50 683.00 955.50 5005.50
1998 929.50 672.00 0.00 z 399.00 184.50 6.50 0.00 3.00 0.00 z 452.50 652.50 946.00 4245.50
1999 795.00 674.59 a 603.00 418.00 270.00 61.00 14.00 19.00 83.50 411.00 585.50 813.50 4748.09
2000 993.50 787.50 612.00 313.00 169.00 49.00 10.50 12.00 144.00 439.50 946.00 1104.50 5580.50
2001 1023.00 842.50 612.50 458.00 188.00 85.50 8.00 6.50 72.00 422.50 700.50 977.50 5396.50
2002 880.00 772.00 771.00 368.50 191.00 40.50 0.00 6.00 65.00 412.50 718.50 868.50 5093.50
2003 789.50 682.50 471.50 362.50 205.50 15.50 0.50 0.00 50.00 233.00 816.00 947.50 4574.00
2004 1102.00 787.50 435.00 295.00 128.50 53.50 1.00 0.00 69.00 297.50 705.00 869.50 4743.50
2005 1028.50 727.50 472.50 343.00 105.00 45.50 0.00 0.00 67.00 317.50 765.00 1137.50 5009.00
2006 760.50 772.50 630.50 355.00 176.00 18.00 0.50 5.00 81.50 363.50 676.00 1101.50 4940.50
2007 1077.50 741.00 533.00 395.00 143.50 44.50 0.00 7.00 84.00 408.00 733.50 938.50 5105.50
2008 1094.50 695.00 637.50 507.00 146.00 74.50 0.00 0.00 z 75.00 404.50 667.00 0.00 z 4301.00
2009 0.00 z 0.00 z 0.00 z 0.00 z 202.50 15.00 0.00 z 4.50 62.00 500.13 a 704.00 1230.00 2718.13
2010 0.00 z 654.00 596.00 401.00 0.00 z 87.00 9.50 17.00 130.00 377.00 852.50 964.88 c 4088.88
2011 904.34 b 662.00 f 431.00 m 612.00 e 268.67 a 97.50 37.00 f 1.60 b 53.79 a 367.02 c 780.54 b 862.00 g 3085.46
2012 515.00 n 0.00 z 460.00 h 0.00 z 0.00 z 0.00 z 11.07 c 1.55 a 38.28 a 371.50 663.62 a 902.00 1988.02
2013 1119.00 734.46 b 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 1853.46
Period of Record Statistics
MEAN 1059.36 793.35 635.81 414.60 217.20 76.34 16.85 21.09 123.74 407.38 752.73 993.66 5503.64
S.D. 205.01 126.10 82.96 79.72 63.08 37.60 15.91 17.52 56.81 70.17 105.67 113.86 457.75
SKEW 0.87 1.38 -0.11 0.11 0.07 0.46 1.27 0.78 0.42 -0.28 0.81 0.40 -0.28
MAX 1603.50 1228.00 831.50 612.00 334.00 174.50 73.33 79.00 280.50 545.50 1121.00 1317.00 6505.00
MIN 678.38 580.74 435.00 197.00 98.00 6.50 0.00 0.00 16.50 232.50 585.50 727.00 4275.50
NO YRS 78 77 77 80 81 81 79 81 81 83 81 81 60