OROVILLE 3 NW, WASHINGTON

Monthly Total Heating Degree Days

(456188)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 196005
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
1909 0.00 z 861.00 b 617.00 428.00 195.00 0.00 z 24.50 7.50 100.00 481.50 755.00 1246.00 4715.50
1910 1214.50 1095.50 533.72 a 341.50 14.50 x 13.50 p 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3185.22
1911 0.00 z 0.00 z 0.00 z 324.00 f 301.00 34.50 4.50 2.50 202.00 0.00 z 0.00 z 0.00 z 544.50
1912 0.00 z 0.00 z 726.71 e 365.00 127.50 45.00 5.00 53.50 184.00 540.50 733.50 1008.00 3788.71
1913 1354.18 a 1175.00 893.50 415.50 252.00 0.00 z 31.00 18.50 162.00 610.00 799.50 1019.00 6730.18
1914 1009.50 1044.50 812.50 359.50 165.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3391.50
1915 0.00 z 887.50 819.00 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 1706.50
1916 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 14.50 r 112.78 c 514.00 959.50 1344.88 a 2931.16
1917 1329.50 1100.08 b 916.00 500.17 a 190.50 74.50 5.00 0.00 79.50 427.00 688.00 1127.50 6437.75
1918 1063.00 1024.00 735.00 355.00 246.00 40.00 10.00 15.00 15.00 393.00 820.00 1033.50 5749.50
1919 1104.00 970.50 786.88 a 388.50 220.50 82.00 2.00 1.00 59.00 588.00 907.50 1254.00 6363.88
1920 1244.50 946.50 741.00 553.97 a 264.50 79.00 0.50 20.50 151.03 a 543.00 748.50 974.50 6267.50
1921 1142.00 951.00 735.50 520.50 168.00 24.50 5.50 7.00 245.50 452.00 871.50 1209.00 6332.00
1922 1402.00 1167.50 853.50 484.00 232.50 4.50 0.00 a 2.50 52.00 389.50 850.00 1274.88 c 6712.88
1923 1032.00 1039.00 697.50 340.86 a 146.50 41.50 0.00 0.00 83.00 401.00 749.00 1031.00 5561.36
1924 1369.00 724.00 735.50 420.00 57.50 8.50 0.00 14.00 121.00 472.50 896.00 1331.00 6149.00
1925 1186.50 739.31 b 626.00 306.92 d 81.50 50.00 0.00 30.00 93.00 491.50 795.50 860.00 5260.23
1926 1037.00 697.50 516.50 259.50 151.00 22.00 0.00 a 1.50 269.00 437.10 a 714.00 1090.00 5195.10
1927 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 q 0.00 z 0.00 z 468.62 a 0.00 z 0.00 z 468.62
1928 0.00 z 0.00 z 0.00 z 0.00 z 52.00 k 62.00 2.50 12.50 156.00 526.50 794.00 1139.00 2692.50
1929 1522.74 b 1285.00 677.50 496.50 205.00 75.00 6.50 12.00 215.00 436.50 908.50 1096.00 6936.24
1930 1584.50 852.00 651.00 297.00 217.50 95.50 9.00 10.50 161.50 524.50 871.00 1095.00 6369.00
1931 992.00 870.50 669.50 373.00 147.50 67.00 2.00 2.00 214.50 503.00 909.50 1200.73 a 5951.23
1932 1330.50 1118.00 885.50 371.50 210.50 37.50 18.00 24.00 155.50 478.50 752.00 1217.50 6599.00
1933 1152.50 1236.50 759.50 427.00 331.00 88.45 a 7.00 6.50 256.50 518.00 750.00 1035.50 6568.45
1934 1017.00 801.00 607.50 224.50 186.00 32.50 12.00 11.00 264.50 448.50 685.00 1067.50 5357.00
1935 1236.00 841.00 812.50 513.00 239.00 72.00 28.00 47.50 79.50 i 599.69 b 951.50 1026.00 6366.19
1936 1084.00 1480.00 778.00 345.50 131.50 45.00 0.50 6.50 188.50 379.50 948.10 a 1045.50 6432.60
1937 1656.00 1196.50 721.00 464.50 211.50 60.00 1.00 59.00 126.50 420.64 b 801.00 1024.00 6741.64
1938 1054.50 959.00 b 749.00 411.00 196.69 b 8.50 j 0.00 a 14.00 48.00 431.33 b 920.69 a 1112.90 a 5897.11
1939 988.38 a 1050.54 b 763.00 365.00 163.50 96.00 3.00 7.75 c 100.50 475.50 766.50 870.00 5649.67
1940 1078.50 879.00 593.50 357.00 127.50 21.35 d 0.00 3.50 41.50 353.00 950.50 991.00 5396.35
1941 992.00 794.00 563.00 321.00 208.50 54.50 0.00 30.00 227.50 494.00 740.50 984.50 5409.50
1942 1230.50 852.00 726.50 386.00 285.50 86.00 11.88 a 0.50 j 72.00 410.00 882.50 1102.00 6044.88
1943 1462.68 a 918.50 831.00 359.00 225.94 e 75.00 8.50 8.50 67.50 428.50 796.50 1073.50 6255.13
1944 1219.00 952.00 805.50 404.00 190.50 19.50 r 0.00 z 0.00 z 78.62 a 312.50 766.50 1141.00 5869.62
1945 1013.38 b 814.59 a 741.00 493.45 a 148.00 f 63.00 2.67 b 0.00 a 166.03 a 379.00 868.00 1046.52 b 5587.64
1946 1051.33 b 912.00 660.50 272.50 i 83.18 a 103.50 2.87 d 4.00 108.50 549.98 b 949.50 1100.50 5525.86
1947 1258.00 865.00 607.50 360.52 a 112.50 58.50 9.00 6.72 a 97.24 a 415.00 814.44 c 964.00 5568.42
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 13.00 21.50 50.00 145.00 509.50 811.50 1323.00 2873.50
1949 1598.00 1145.50 744.00 340.86 a 124.50 70.50 10.00 7.50 95.50 509.00 667.00 1124.50 6436.86
1950 1761.50 962.50 794.50 501.50 253.00 63.00 4.50 0.00 76.50 517.50 840.00 926.00 6700.50
1951 1159.50 939.50 918.50 425.50 180.50 54.00 7.00 32.00 79.50 496.50 853.00 1301.00 6446.50
1952 1391.50 960.50 760.00 366.00 190.50 63.00 9.50 15.50 36.50 308.00 850.50 959.00 5910.50
1953 877.00 747.50 657.50 463.00 244.00 106.00 2.00 25.00 128.00 406.50 695.00 944.50 5296.00
1954 1265.32 a 783.00 798.50 509.50 190.50 146.90 a 15.00 28.42 a 125.00 514.50 627.50 1036.50 6040.63
1955 1129.00 980.00 962.00 550.00 293.50 58.00 36.50 0.00 151.00 465.00 1075.00 1238.50 6938.50
1956 1092.50 1197.50 850.43 a 338.00 136.00 76.00 0.00 2.00 90.50 476.50 882.50 1094.30 a 6236.23
1957 1529.00 1086.00 723.50 378.00 84.50 24.50 h 6.50 7.50 23.50 502.50 814.50 918.00 6073.50
1958 940.00 675.50 660.50 425.00 62.00 12.50 3.00 0.00 149.00 419.50 904.50 1007.00 5258.50
1959 1123.50 982.00 711.00 366.00 269.00 75.00 19.50 31.00 155.00 499.00 953.00 1013.70 a 6197.70
1960 1233.00 872.00 697.00 425.50 26.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3227.50
Period of Record Statistics
MEAN 1216.16 965.90 736.72 402.16 188.65 59.43 7.72 14.51 128.91 466.33 827.99 1087.43 6082.59
S.D. 208.45 169.03 101.35 75.71 65.79 29.83 8.99 15.49 65.95 67.77 94.41 122.61 533.50
SKEW 0.76 0.64 -0.01 0.14 -0.08 0.30 1.55 1.35 0.42 -0.18 0.11 0.42 -0.25
MAX 1761.50 1480.00 962.00 553.97 331.00 146.90 36.50 59.00 269.00 610.00 1075.00 1344.88 6938.50
MIN 877.00 675.50 516.50 224.50 57.50 4.50 0.00 0.00 15.00 308.00 627.50 860.00 5195.10
NO YRS 44 46 47 45 44 41 45 44 46 47 46 46 33