PROSSER, WASHINGTON

Monthly Total Heating Degree Days

(456763)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 196301
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
1912 0.00 z 0.00 z 0.00 z 196.00 n 141.00 35.50 12.00 43.00 166.00 549.14 c 633.50 904.17 a 2484.31
1913 1134.50 978.00 691.00 346.50 203.00 19.50 16.57 b 16.00 126.50 455.50 636.21 a 1019.50 5642.78
1914 790.00 775.50 530.50 326.38 a 119.50 106.61 b 3.10 a 3.88 c 134.00 g 281.50 f 664.62 d 1295.50 4615.58
1915 1182.50 720.00 528.00 288.00 186.00 41.00 9.00 i 1.50 138.50 351.00 784.00 973.50 5194.00
1916 1396.79 e 905.00 588.00 371.50 275.00 111.50 34.00 21.50 148.00 506.00 941.00 1172.66 b 6470.94
1917 1094.00 821.00 811.50 499.50 242.00 115.50 21.70 a 1.50 78.00 378.72 a 669.64 b 656.17 a 5389.23
1918 861.00 832.50 628.50 418.00 301.50 29.00 3.74 b 39.27 a 43.50 356.00 744.00 890.98 b 5147.99
1919 677.00 i 797.00 614.50 392.00 233.00 101.11 c 37.50 2.50 154.29 b 475.50 766.50 1319.71 c 4893.61
1920 1130.47 a 840.00 651.50 502.50 288.50 99.64 b 0.50 50.50 141.21 a 437.00 770.50 858.50 5770.82
1921 917.00 720.50 572.00 435.00 176.50 32.50 17.50 11.00 220.50 342.50 752.00 1028.00 5225.00
1922 1396.50 930.46 b 720.00 500.50 249.55 a 6.00 0.00 4.50 81.00 381.50 826.00 1204.87 a 6300.88
1923 806.00 967.50 640.50 370.00 178.00 0.00 z 13.50 0.00 80.50 392.00 661.50 922.50 5032.00
1924 1129.00 614.50 623.00 383.00 100.00 18.00 7.50 10.50 105.00 e 379.75 a 765.52 a 0.00 z 4135.77
1925 803.50 556.50 429.00 f 306.50 145.00 71.00 0.00 36.00 98.00 389.50 760.34 a 828.00 3994.34
1926 921.00 593.50 488.50 247.00 168.43 a 22.50 1.50 4.13 a 244.66 a 342.07 b 642.22 c 1011.38 c 4686.89
1927 1097.06 d 673.56 a 147.50 x 345.00 f 157.00 l 13.85 d 3.00 25.50 123.50 377.00 543.75 b 1107.50 3964.71
1928 1074.67 a 805.02 b 536.30 a 319.00 g 112.50 50.00 0.00 1.00 105.50 349.02 b 717.50 990.34 c 4741.84
1929 1324.22 a 1178.15 b 451.00 g 450.56 c 206.00 53.57 b 4.00 9.00 178.50 364.00 895.50 653.50 i 4663.50
1930 920.00 k 662.50 570.00 328.00 231.50 114.50 32.79 e 1.00 88.50 496.00 766.50 1026.10 a 4317.39
1931 884.50 729.56 a 585.26 b 357.12 d 88.57 c 57.69 d 0.50 0.00 a 129.50 388.02 a 832.00 1098.00 5150.71
1932 1070.02 a 849.29 a 586.00 328.00 183.00 38.89 c 11.50 17.50 88.00 348.00 597.41 a 1107.65 e 5225.26
1933 905.09 c 943.92 b 633.84 c 392.00 316.72 a 50.50 k 1.07 b 0.50 128.89 c 307.23 c 678.75 b 683.00 4991.01
1934 745.00 629.50 427.80 a 156.00 132.61 d 12.50 0.00 0.00 d 157.50 333.77 a 579.00 854.64 b 4028.32
1935 891.00 753.00 676.50 460.18 b 181.35 a 44.50 14.00 19.50 62.00 473.78 a 98.00 z 983.73 a 4559.55
1936 905.09 c 1311.13 c 619.50 246.00 94.55 a 30.50 0.50 0.50 125.50 312.07 a 923.50 875.00 5443.84
1937 1585.43 c 909.48 a 549.22 a 394.29 b 162.00 43.00 4.50 36.00 93.00 267.12 a 614.00 866.00 5524.03
1938 894.00 781.50 617.93 a 338.65 d 195.50 39.50 1.03 a 6.00 23.00 373.07 b 801.50 891.50 4963.19
1939 852.50 815.23 b 558.00 294.11 b 103.50 62.00 5.50 6.00 60.50 337.26 b 721.50 754.16 b 4570.25
1940 1074.50 727.59 a 491.50 340.50 121.50 14.00 0.00 3.50 11.50 152.00 s 882.50 951.70 a 4618.79
1941 964.50 717.00 475.50 279.00 200.00 25.50 0.00 25.00 147.00 413.00 650.00 857.00 4753.50
1942 1234.50 755.50 641.24 d 333.62 a 211.50 103.39 b 8.00 18.00 65.00 387.50 814.50 996.50 5569.25
1943 1302.53 b 753.08 d 674.00 322.00 272.00 95.00 11.50 13.00 34.00 438.50 770.00 999.75 a 5685.37
1944 1118.50 830.50 686.65 a 308.00 i 214.93 a 58.50 8.50 4.13 a 99.50 326.00 830.50 1103.50 5281.22
1945 905.00 687.50 510.00 h 470.50 142.00 77.00 4.50 14.00 146.50 361.00 726.00 993.00 4527.00
1946 230.50 w 698.00 598.50 367.50 119.02 c 0.00 z 4.81 b 5.50 109.14 a 498.50 806.79 b 874.95 b 4082.70
1947 1072.94 d 705.50 509.00 288.50 73.50 55.71 b 0.00 24.80 a 66.50 355.98 a 696.50 910.92 e 4759.87
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.50 16.50 9.62 b 130.00 460.19 b 0.00 z 1098.36 b 1720.17
1949 1514.00 882.00 629.00 303.00 115.00 54.00 6.00 12.00 83.00 522.00 594.00 876.30 c 5590.30
1950 1497.50 886.50 667.50 451.00 208.00 59.50 3.50 1.50 79.66 a 422.50 672.50 786.50 5736.16
1951 937.00 762.50 754.33 a 339.83 a 152.00 39.50 4.00 11.50 68.50 431.00 563.50 g 1085.50 4585.66
1952 1177.50 762.00 631.50 293.50 130.00 42.50 5.00 12.50 63.50 305.00 928.00 911.00 5262.00
1953 581.85 e 610.50 567.50 408.00 230.00 95.00 0.00 5.00 73.00 348.50 613.00 784.41 c 4316.76
1954 1010.50 715.00 700.50 379.00 156.00 79.50 2.00 9.00 i 102.00 472.50 559.00 940.50 5116.50
1955 1021.50 777.50 742.00 518.50 241.50 37.50 24.11 d 0.00 d 117.50 347.20 a 928.50 1039.50 5795.31
1956 1008.50 1085.00 620.50 299.00 109.50 70.50 0.00 11.00 68.50 407.50 804.00 641.50 h 4484.00
1957 1431.00 782.00 627.50 344.50 41.50 26.00 6.50 10.50 47.00 443.50 731.50 757.95 a 5249.45
1958 788.50 534.00 632.50 405.00 68.00 17.00 0.00 1.50 103.50 346.17 a 694.50 857.50 4448.17
1959 943.50 747.00 577.00 326.50 249.00 36.00 g 9.19 d 16.00 121.00 362.00 805.00 954.00 5110.19
1960 1264.50 754.50 605.00 354.50 257.54 e 36.00 0.00 51.00 68.50 307.23 c 665.50 1101.50 5465.77
1961 854.57 a 524.74 a 566.00 369.00 175.67 a 22.50 1.50 0.50 127.00 437.00 845.50 888.50 4812.47
1962 982.00 733.00 680.50 285.00 247.50 68.50 20.50 f 8.94 e 52.50 b 376.00 586.50 815.50 4835.94
1963 464.50 q 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 0.00 z 0.00
Period of Record Statistics
MEAN 1053.82 786.22 611.68 361.07 178.58 52.18 7.41 12.56 103.48 392.48 735.27 956.40 5249.45
S.D. 224.43 150.67 76.83 75.68 66.08 31.74 9.36 13.45 46.65 63.77 105.38 142.95 567.90
SKEW 0.53 1.12 0.07 0.10 0.07 0.55 1.70 1.39 0.63 0.52 0.17 0.36 -0.07
MAX 1585.43 1311.13 811.50 518.50 316.72 115.50 37.50 51.00 244.66 549.14 941.00 1319.71 6470.94
MIN 581.85 524.74 427.80 156.00 41.50 5.50 0.00 0.00 11.50 267.12 543.75 656.17 4028.32
NO YRS 46 49 45 46 49 47 49 50 50 49 48 48 28