PRINEVILLE 4 NW, OREGON

Monthly Total Heating Degree Days

(356883)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1897 952.50 810.00 906.00 458.00 178.25 a 210.00 115.50 55.50 314.40 e 337.68 c 561.00 e 733.00 5631.83
1898 972.50 593.00 781.50 449.00 240.50 125.00 113.50 38.00 96.00 i 481.50 681.50 1184.50 5660.50
1899 899.50 960.50 865.00 750.00 539.50 238.50 61.00 341.00 117.50 448.50 695.00 943.50 6859.50
1900 894.50 869.00 551.50 447.50 280.00 100.00 87.00 162.00 294.00 400.00 664.29 b 715.00 5464.79
1901 994.00 1023.00 649.50 530.50 315.00 163.00 33.00 3.50 230.50 459.50 525.00 614.50 5541.00
1902 820.50 671.50 557.00 558.50 252.00 194.00 32.50 72.50 312.50 391.12 a 675.50 889.50 5427.12
1903 933.50 777.00 0.00 z 0.00 z 0.00 z 40.50 q 179.50 126.50 339.50 490.50 727.50 980.00 4554.00
1904 958.50 843.50 839.50 497.00 241.00 g 233.50 91.00 88.00 230.00 472.50 638.50 962.55 a 5854.55
1905 1064.50 943.00 667.00 545.50 482.50 232.50 56.00 112.00 253.45 a 678.50 867.50 947.50 6849.95
1906 923.00 807.00 921.00 527.50 403.00 268.50 7.75 a 84.00 244.00 517.00 830.00 867.00 6399.75
1907 1251.00 735.50 809.50 604.50 413.33 d 282.50 45.97 b 179.05 b 273.00 f 409.00 790.34 a 923.50 6444.19
1908 952.50 686.00 g 793.00 560.17 a 559.55 a 268.50 34.00 154.50 282.93 a 603.97 b 752.50 1111.72 b 6073.34
1909 1225.00 758.00 771.50 679.14 a 503.50 206.38 a 148.50 128.50 249.00 521.32 a 458.50 l 0.00 z 5190.83
1910 0.00 z 0.00 z 0.00 z 372.93 a 267.50 220.00 35.65 a 143.50 f 183.00 p 385.50 f 771.50 948.00 2615.58
1911 1041.94 d 1006.92 b 686.00 599.00 502.00 181.00 59.00 49.00 279.00 560.50 794.00 1028.00 6786.37
1912 1054.50 763.84 a 841.50 628.50 436.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3724.84
1913 1035.92 a 0.00 z 0.00 z 0.00 z 0.00 z 184.50 h 99.50 6.50 r 267.86 b 580.50 684.83 a 1094.00 3762.60
1914 824.08 a 771.00 645.00 517.24 a 276.00 238.39 b 31.00 34.50 l 291.92 d 471.50 692.00 1194.00 5952.14
1915 979.71 b 721.50 637.50 468.10 a 412.00 225.50 109.53 a 10.85 a 291.00 477.40 a 775.18 b 964.88 c 6073.15
1916 1416.50 783.50 661.50 514.14 a 529.00 265.00 137.50 100.00 266.50 662.00 938.50 1093.50 7367.64
1917 1135.00 893.00 1008.00 650.00 493.50 243.62 a 45.50 27.00 175.50 451.00 629.00 718.00 6469.12
1918 869.00 837.50 721.50 625.71 b 518.00 106.00 98.96 e 173.50 151.50 466.11 c 799.50 1012.00 6379.28
1919 977.50 848.50 752.00 539.00 377.00 229.00 36.00 45.50 274.50 627.50 797.50 1232.50 6736.50
1920 933.00 822.50 785.50 654.50 445.50 193.39 b 44.29 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3878.68
1921 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 62.50 h 355.00 401.50 660.50 1099.50 2516.50
1922 1185.48 b 965.00 863.00 694.14 a 402.50 77.50 0.00 32.50 0.00 z 459.50 910.50 1148.00 6738.12
1923 944.97 b 0.00 z 772.00 578.00 409.00 279.50 74.50 33.50 218.00 586.00 718.00 1037.50 5650.97
1924 1058.50 703.00 869.00 592.50 255.00 164.50 78.00 85.50 113.50 i 206.50 358.50 n 1292.50 5305.00
1925 836.00 653.00 666.50 383.00 255.50 0.00 z 3.00 32.50 0.00 z 308.50 m 685.00 946.50 4461.00
1926 1177.50 780.00 0.00 z 373.50 f 349.50 152.50 30.00 41.00 434.00 486.50 612.93 a 1024.55 a 5088.48
1927 997.00 691.00 786.50 622.50 448.00 127.50 0.00 z 99.72 a 348.89 c 217.50 m 667.50 1188.50 5977.11
1928 1053.00 853.95 a 686.00 633.50 290.50 252.00 103.50 163.50 313.00 578.00 789.50 1049.00 6765.45
1929 1187.30 a 1161.00 734.50 705.00 421.50 234.50 98.00 93.50 430.00 583.50 842.50 892.00 7383.30
1930 1575.00 687.00 731.00 475.50 485.00 286.50 97.50 102.00 294.50 652.50 812.00 1039.53 a 7238.03
1931 904.00 824.50 742.50 518.00 320.50 243.00 76.00 98.50 319.50 550.50 872.00 995.00 6464.00
1932 1038.50 931.00 730.00 569.50 437.50 198.50 160.00 161.00 280.00 519.50 661.50 1217.50 6904.50
1933 1067.50 962.00 760.00 595.00 546.00 153.00 51.50 118.00 371.00 467.50 769.00 757.50 6618.00
1934 805.50 704.00 572.00 376.50 277.50 253.00 94.50 81.00 316.67 c 477.50 686.90 a 987.50 5632.56
1935 1041.00 811.50 918.00 651.50 523.00 217.00 150.00 180.00 246.00 655.50 972.50 1069.00 7435.00
1936 1016.50 1128.50 827.00 524.00 393.00 299.50 86.00 89.50 307.50 509.50 889.50 958.00 7028.50
1937 1589.50 912.00 705.50 623.00 396.00 212.50 63.50 166.50 256.00 437.50 652.50 889.00 6903.50
1938 992.00 893.50 814.50 535.50 438.50 181.00 58.50 162.00 189.50 553.00 933.50 1045.50 6797.00
1939 943.43 a 941.00 713.00 501.00 303.00 295.50 102.50 100.50 249.00 550.50 777.00 796.00 6272.43
1940 1152.00 792.50 676.00 581.00 368.00 198.50 88.00 111.00 266.50 519.00 888.50 988.50 6629.50
1941 931.00 755.50 769.00 612.00 464.50 272.50 63.50 133.50 446.38 a 582.50 698.00 961.00 6689.38
1942 1277.50 881.48 a 821.00 609.00 491.00 348.50 93.00 117.50 284.50 530.50 787.50 910.50 7151.98
1943 1184.00 804.50 834.50 531.00 558.50 343.50 126.50 213.50 215.00 559.50 805.00 1072.00 7247.50
1944 1116.50 961.00 895.50 692.50 467.00 314.50 112.50 151.00 221.50 402.00 848.00 1103.50 7285.50
1945 979.50 801.50 852.50 652.00 399.50 286.50 65.50 89.00 335.50 512.00 802.50 991.00 6767.00
1946 971.50 822.50 807.00 564.50 375.00 253.50 100.00 110.00 337.00 709.50 847.50 919.50 6817.50
1947 1126.00 734.00 696.50 555.00 260.50 280.00 84.50 144.00 218.50 451.50 786.50 921.50 6258.50
1948 972.00 961.46 c 853.50 671.50 470.50 150.00 118.50 169.50 363.10 a 567.50 838.00 1158.50 7294.06
1949 1494.00 916.00 837.00 530.50 301.50 247.50 146.50 158.50 269.50 713.00 a 677.59 a 983.00 7274.59
1950 1355.50 806.00 804.00 638.00 462.93 a 243.75 b 86.00 106.29 c 299.50 488.00 680.00 773.00 6742.97
1951 1001.09 b 771.00 888.50 580.50 398.50 209.00 68.50 184.97 a 252.93 a 610.00 813.50 1127.37 a 6905.85
1952 1157.50 896.50 873.00 526.00 378.72 a 292.00 102.50 132.00 198.50 400.00 1003.00 1040.50 7000.22
1953 754.33 a 782.00 789.00 628.50 520.00 392.50 112.50 127.00 204.00 545.00 612.00 894.00 6360.83
1954 957.50 683.50 900.00 598.50 372.00 328.50 121.50 272.00 356.00 611.22 a 662.00 1005.00 6867.72
1955 1066.50 891.33 a 898.00 750.50 505.00 210.00 181.50 165.50 297.93 a 502.00 828.62 a 971.00 7267.89
1956 940.50 963.50 777.00 587.50 337.50 302.07 a 79.00 169.00 289.00 603.00 844.00 938.50 6830.57
1957 1413.50 816.50 740.50 582.41 a 359.50 214.14 a 149.00 218.50 218.50 606.50 869.00 845.78 a 7033.83
1958 884.50 609.00 848.00 629.50 244.50 182.50 45.50 44.50 316.50 521.50 789.50 835.50 5951.00
1959 939.50 873.50 817.00 609.50 522.50 206.00 99.50 201.00 324.50 516.50 798.50 1014.50 6922.50
1960 1160.00 863.50 717.00 576.50 465.00 204.00 48.50 180.00 282.93 a 577.12 a 881.00 994.00 6949.55
1961 890.50 686.00 730.50 603.00 451.50 100.50 40.82 a 41.33 a 401.00 620.50 900.50 983.50 6449.65
1962 1107.50 802.00 822.50 456.72 a 506.50 239.00 124.00 142.50 255.00 538.88 a 668.00 865.50 6528.11
1963 1173.50 609.50 782.50 0.00 z 397.00 277.00 128.00 0.00 z 114.00 0.00 z 747.00 968.00 5196.50
1964 994.00 880.50 881.50 736.00 0.00 z 230.00 87.50 155.50 346.00 543.50 845.50 1013.50 6713.50
1965 908.00 758.00 850.50 571.50 483.00 179.48 a 60.50 100.50 395.50 411.00 703.50 1020.50 6441.98
1966 935.50 828.50 735.00 583.50 347.00 215.00 75.50 80.00 173.50 544.05 a 0.00 z 923.00 5440.55
1967 886.50 733.50 859.50 773.50 404.00 181.50 41.00 21.50 131.00 502.50 773.00 1094.82 a 6402.32
1968 983.00 706.88 a 694.40 a 686.00 397.50 181.50 58.50 0.00 z 231.00 0.00 z 754.50 1044.00 5737.27
1969 1229.00 917.50 826.00 580.50 284.00 144.00 95.50 118.50 220.50 655.00 769.50 946.50 6786.50
1970 924.50 736.50 777.00 779.00 391.24 b 153.50 44.00 57.00 361.50 576.00 771.00 996.50 6567.74
1971 960.50 819.00 852.50 652.00 393.50 247.50 97.00 37.50 365.50 618.50 777.50 1034.00 6855.00
1972 1059.50 782.00 659.50 701.50 353.50 151.00 54.50 72.50 369.50 605.00 746.50 1263.50 6818.50
1973 1061.00 764.50 829.00 610.00 308.28 d 212.50 76.00 113.50 241.50 567.50 830.00 844.00 6457.78
1974 1117.50 766.50 765.50 626.00 486.50 116.00 97.00 90.00 182.50 540.00 709.50 930.50 6427.50
1975 944.50 842.00 873.50 764.50 435.50 225.50 42.00 123.50 215.50 516.00 815.00 898.00 6695.50
1976 906.50 850.00 822.50 637.00 381.00 292.00 46.50 111.00 163.50 517.00 639.50 996.00 6362.50
1977 1138.50 755.00 845.50 500.00 512.00 87.00 84.00 64.00 303.00 509.50 831.00 898.50 6528.00
1978 893.50 718.00 624.00 623.00 497.50 162.00 70.00 141.00 296.50 479.50 992.00 1169.00 6666.00
1979 1493.00 846.50 721.00 608.50 346.50 0.00 z 0.00 z 50.50 128.00 412.50 855.50 859.50 6321.50
1980 1001.30 a 757.62 a 782.46 d 526.55 a 396.80 a 293.00 53.00 157.50 209.50 501.00 723.00 818.50 6220.24
1981 900.50 750.00 722.00 582.50 415.00 221.00 113.00 68.00 216.50 559.00 741.00 917.00 6205.50
1982 1162.50 820.50 824.50 698.50 422.50 193.50 109.00 96.50 327.00 585.50 879.50 1032.00 7151.50
1983 851.50 689.00 675.50 669.50 380.50 236.50 133.00 53.50 337.50 482.50 724.50 1261.70 a 6495.20
1984 989.50 781.00 693.50 678.00 449.50 a 276.50 48.50 52.00 302.00 635.50 792.00 1112.50 6810.50
1985 1102.50 888.00 836.00 497.50 394.00 177.00 8.00 126.50 393.00 583.50 1134.50 1291.50 7432.00
1986 831.50 753.41 a 591.00 648.00 397.00 102.50 148.00 19.00 404.00 516.50 746.00 995.50 6152.41
1987 1016.00 763.00 735.50 421.55 a 315.00 133.00 128.00 97.00 0.00 z 0.00 z 779.00 1007.50 b 5395.55
1988 1035.50 757.00 771.00 484.50 395.50 198.50 41.00 80.00 276.00 324.50 785.50 1005.50 6154.50
1989 988.50 1061.50 726.00 461.00 410.00 142.00 68.50 104.00 262.50 548.00 763.00 946.00 6481.00
1990 905.50 854.50 706.00 448.00 445.50 166.50 33.50 95.50 117.50 530.00 742.00 1217.50 6262.00
1991 1040.00 667.00 808.50 636.00 486.50 279.50 24.00 24.50 142.50 522.50 726.50 959.50 6317.00
1992 867.50 678.00 664.50 476.00 215.50 125.50 70.50 81.00 200.50 470.00 815.50 1238.50 5903.00
1993 1398.00 1082.00 713.50 613.00 269.50 211.00 187.00 125.50 231.00 461.00 1036.50 942.50 7270.50
1994 871.50 869.00 742.50 485.00 321.50 169.50 37.00 61.00 137.00 573.50 910.00 1008.00 6185.50
1995 911.00 666.00 759.00 635.00 385.00 228.50 56.00 123.50 174.50 556.00 659.50 969.78 a 6123.78
1996 928.50 863.79 a 739.50 564.00 475.50 186.00 53.00 72.50 281.00 537.00 759.00 910.00 6369.79
1997 958.50 822.37 a 703.50 645.00 265.00 234.00 78.50 46.00 212.00 560.50 716.00 1007.50 6248.87
1998 915.50 770.50 791.00 626.50 478.00 230.00 10.50 60.00 189.00 589.50 732.50 998.50 6391.50
1999 868.50 778.30 a 787.50 500.00 i 493.00 248.04 b 94.15 d 64.58 a 259.00 518.14 c 625.00 c 963.58 a 5699.79
2000 1013.04 c 778.17 b 817.07 c 527.50 400.13 d 144.50 f 0.00 z 0.00 z 265.34 a 528.66 c 569.00 j 0.00 z 4329.91
2001 0.00 z 661.50 h 528.00 i 0.00 z 176.00 o 171.00 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2002 438.00 s 0.00 z 518.50 l 559.50 278.50 k 108.50 k 41.50 104.00 134.50 i 0.00 z 0.00 z 584.00 k 705.00
2003 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 103.00 k 27.50 j 24.00 h 86.50 o 232.50 l 430.50 o 471.50 o 0.00
2004 615.00 l 532.50 k 386.50 k 422.00 f 281.00 j 160.50 g 25.50 f 45.50 j 133.50 m 285.00 o 352.50 p 369.50 q 0.00
2005 633.00 k 472.00 k 505.50 h 384.50 j 232.50 i 239.00 g 15.00 k 52.50 h 139.00 i 287.00 k 543.00 j 538.50 q 0.00
2006 505.00 l 515.00 j 533.50 k 364.00 j 268.50 i 102.00 k 26.50 j 87.04 e 93.00 i 390.00 j 377.50 n 301.50 t 87.04
2007 652.50 k 539.00 i 450.00 k 383.00 l 204.50 o 140.50 i 14.50 i 53.50 h 148.00 l 329.00 j 402.50 m 348.00 r 0.00
2008 499.50 r 511.50 j 515.50 k 454.50 k 295.00 j 116.50 r 15.50 o 43.50 k 81.50 k 254.00 k 260.00 q 368.00 t 0.00
2009 938.00 528.50 h 524.50 l 379.00 j 208.00 j 149.50 34.50 52.00 120.50 605.50 722.00 1097.50 3719.50
2010 790.00 710.50 715.00 638.00 465.50 245.50 72.50 81.50 175.50 428.00 784.00 916.50 6022.50
2011 889.00 843.00 728.50 681.00 516.50 235.50 82.00 19.00 76.50 417.50 764.50 947.00 6200.00
2012 843.50 825.50 740.00 461.50 340.00 216.00 28.50 13.00 74.50 431.50 654.00 963.00 5591.00
2013 1053.00 789.50 823.50 11.00 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 2666.00
Period of Record Statistics
MEAN 1028.34 816.01 770.73 584.48 402.03 216.09 78.82 103.71 263.34 523.33 772.62 993.40 6588.30
S.D. 166.86 107.15 85.17 87.77 87.94 61.26 40.77 58.15 80.95 83.63 101.91 127.76 481.43
SKEW 1.36 0.67 -0.20 -0.14 -0.33 0.02 0.44 0.89 -0.11 -0.51 0.57 0.07 -0.36
MAX 1589.50 1161.00 1008.00 779.00 559.55 392.50 187.00 341.00 446.38 713.00 1134.50 1292.50 7435.00
MIN 754.33 593.00 551.50 372.93 178.25 77.50 0.00 3.50 74.50 206.50 525.00 614.50 5427.12
NO YRS 107 103 103 102 102 101 104 101 99 100 102 104 81