MONROE, WASHINGTON

Monthly Total Heating Degree Days

(455525)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1929 0.00 z 289.50 o 584.50 527.50 301.00 151.50 64.50 46.00 204.00 327.00 667.50 686.81 b 3560.31
1930 1132.00 612.00 601.00 363.50 335.00 146.00 80.50 53.50 177.50 452.00 657.00 764.00 5374.00
1931 632.00 643.00 545.50 388.00 224.50 125.50 69.23 a 84.73 a 185.00 424.00 730.00 789.93 d 4841.39
1932 879.00 752.00 604.50 a 418.50 332.50 155.50 118.50 84.00 217.00 391.50 521.00 909.50 5383.50
1933 840.50 815.50 624.00 479.00 352.50 219.50 139.50 64.50 256.00 404.50 590.00 672.50 5458.00
1934 669.00 556.00 478.50 313.50 245.50 165.00 86.50 61.00 238.50 363.00 512.50 756.50 4445.50
1935 823.50 618.00 734.18 a 536.50 366.50 165.00 98.50 116.00 190.50 492.50 769.00 757.00 5667.18
1936 772.50 980.00 747.50 472.00 285.20 a 127.50 66.00 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3384.70
1937 1228.52 d 763.50 574.00 529.00 368.00 137.00 104.50 118.00 190.50 357.69 e 593.00 189.00 x 4963.71
1938 839.50 631.00 628.50 418.00 337.00 163.00 63.00 140.00 138.00 412.82 a 721.50 775.00 5267.32
1939 720.00 758.00 648.50 432.50 303.00 225.50 119.19 b 60.00 221.50 427.50 495.50 633.00 5044.19
1940 740.50 606.00 500.00 387.00 206.00 139.00 50.38 c 77.00 120.50 319.00 717.00 740.00 4602.38
1941 685.50 517.50 452.50 352.50 269.50 125.00 22.00 37.09 c 214.50 375.50 552.50 727.00 4331.09
1942 825.00 652.00 591.50 376.00 252.00 198.62 a 17.50 45.50 188.89 c 364.00 0.00 z 751.75 c 4262.76
1943 961.50 638.81 a 683.00 366.43 b 327.10 b 160.71 b 68.20 a 67.00 113.00 379.50 588.00 831.50 5184.76
1944 738.50 707.50 674.50 421.50 301.00 134.50 49.50 67.00 131.50 303.00 601.50 809.00 4939.00
1945 730.50 640.50 652.00 520.00 236.50 170.50 46.50 47.00 227.50 368.56 d 594.50 817.37 a 5051.42
1946 533.00 j 628.00 633.50 475.50 220.00 165.50 46.00 64.00 175.00 545.50 746.50 813.15 e 4512.65
1947 940.85 a 601.50 341.00 j 0.00 z 211.00 132.50 0.00 z 61.50 187.00 377.17 a 669.50 715.21 c 3896.23
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 96.72 a 47.50 83.00 216.72 a 461.50 685.00 915.00 2505.45
1949 1117.00 791.50 597.50 386.90 a 228.50 210.50 108.50 69.75 a 158.50 536.50 453.50 793.00 5451.65
1950 1245.50 699.50 652.00 503.00 388.50 142.00 67.17 a 47.03 b 165.00 461.00 661.00 622.00 5653.70
1951 869.50 670.50 747.50 427.50 310.50 118.50 58.50 79.50 151.03 a 407.50 622.50 872.50 5335.53
1952 868.50 657.50 663.00 390.50 304.00 227.59 a 62.50 48.57 a 117.50 332.73 a 704.50 705.25 a 5082.14
1953 603.47 a 621.00 606.50 462.86 b 292.00 196.07 b 77.00 30.50 132.50 324.50 474.00 665.00 4485.40
1954 879.00 603.50 718.74 d 494.50 303.00 235.50 129.50 113.00 175.00 414.00 434.00 725.50 5225.24
1955 767.00 702.00 788.00 558.50 376.00 181.03 a 125.00 136.00 220.50 396.50 780.50 804.45 a 5835.48
1956 819.00 860.00 702.00 421.00 237.50 152.50 40.82 a 68.50 183.50 451.57 a 667.50 735.00 5338.88
1957 1030.50 721.00 621.03 a 420.00 a 172.05 a 105.52 a 89.90 a 78.50 79.66 a 417.90 e 621.50 668.50 5026.06
1958 663.50 464.50 590.00 420.00 75.50 h 43.00 2.50 9.50 157.50 281.50 650.00 611.00 3893.00
1959 751.50 647.77 b 605.50 421.00 258.00 f 122.00 44.00 40.50 197.00 384.50 638.00 754.50 4606.27
1960 850.00 672.50 617.50 407.00 337.50 138.50 44.50 98.68 a 181.00 333.00 624.00 806.00 5110.18
1961 694.50 549.50 562.00 473.00 296.50 75.50 34.00 6.50 180.00 423.50 703.00 764.50 4762.50
1962 814.50 582.50 689.23 a 383.00 377.50 158.50 91.50 59.00 163.00 359.71 b 544.50 701.50 4924.44
1963 970.00 493.00 617.50 465.00 277.50 172.50 75.00 24.50 69.83 a 302.00 594.00 745.03 a 4805.86
1964 730.00 693.50 640.00 507.50 368.00 205.50 107.50 151.50 239.00 397.50 719.50 920.50 5680.00
1965 799.50 654.50 649.50 435.00 0.00 z 159.50 54.00 57.50 240.00 313.50 503.00 823.00 4689.00
1966 771.00 649.00 616.00 466.50 343.50 174.00 80.50 67.50 119.50 401.50 611.50 659.00 4959.50
1967 721.00 612.50 697.50 563.50 310.00 75.00 46.00 16.00 87.00 361.00 596.00 798.50 4884.00
1968 788.50 586.50 0.00 z 518.00 303.00 178.00 37.50 103.00 190.50 459.00 625.50 950.00 4739.50
1969 1050.50 717.50 610.00 485.50 253.00 76.00 90.00 136.50 193.00 438.50 612.50 723.50 5386.50
1970 798.50 564.00 619.50 552.00 358.00 146.50 90.00 91.00 277.50 478.50 641.00 851.95 c 5468.45
1971 803.50 694.96 c 730.50 496.50 313.00 243.00 103.50 36.50 251.50 495.00 638.50 908.50 5714.96
1972 952.50 727.50 601.50 574.00 250.50 174.00 71.00 54.50 266.50 487.00 623.50 878.50 5661.00
1973 855.00 603.00 610.50 496.00 285.50 169.00 84.50 139.00 148.50 432.50 0.00 z 693.00 4516.50
1974 856.00 626.50 642.50 472.00 392.50 167.50 106.50 56.00 97.00 385.00 563.50 698.00 5063.00
1975 794.50 690.50 697.00 572.50 345.50 200.69 a 51.00 113.50 130.34 a 429.50 640.00 738.50 5403.53
1976 729.50 709.50 739.50 477.00 303.00 241.00 79.50 105.00 128.00 395.50 618.00 723.50 5249.00
1977 903.50 533.00 669.50 395.00 363.00 109.00 110.50 50.50 225.50 451.00 686.50 773.00 5270.00
1978 736.50 559.00 536.50 458.50 339.50 82.50 48.00 69.00 199.50 364.50 765.00 916.50 5075.00
1979 1001.50 709.00 552.50 480.00 258.00 146.50 44.50 21.50 87.41 a 332.00 681.50 676.00 4990.41
1980 0.00 z 637.00 631.00 362.00 278.50 188.50 67.50 87.50 152.00 383.50 552.50 654.62 a 3994.62
1981 648.50 604.50 498.00 452.50 295.00 189.00 57.00 29.50 153.50 469.00 538.50 764.31 b 4699.31
1982 827.50 670.50 644.50 522.50 292.50 82.00 91.00 51.00 144.50 402.00 731.00 814.00 5273.00
1983 662.00 540.50 511.50 431.00 221.50 151.50 155.50 13.50 222.50 425.50 558.00 972.50 4865.50
1984 719.50 589.00 503.50 458.50 337.00 158.00 58.50 46.50 196.50 497.50 639.50 931.00 5135.00
1985 901.00 745.00 685.00 466.50 294.50 160.50 15.50 46.00 231.50 442.00 932.00 994.00 5913.50
1986 631.50 627.50 475.00 505.50 297.50 100.50 98.00 17.00 214.50 353.00 605.50 789.00 4714.50
1987 794.00 552.00 547.00 373.50 270.00 119.00 47.00 53.50 111.00 369.50 520.00 847.50 4604.00
1988 0.00 z 0.00 z 612.00 427.50 271.00 177.50 67.50 47.50 178.00 290.50 596.50 754.00 3422.00
1989 777.00 905.00 672.00 392.00 317.50 132.00 77.50 48.00 134.50 417.00 574.50 740.00 5187.00
1990 741.00 710.00 592.00 397.00 335.00 155.50 34.50 26.00 93.00 483.50 572.50 974.00 5114.00
1991 838.50 496.50 661.00 484.00 347.00 109.00 n 36.00 44.50 138.50 440.50 571.50 711.00 4769.00
1992 710.50 551.50 513.00 365.00 220.00 98.00 51.00 48.50 200.50 373.50 640.50 870.50 4642.50
1993 925.50 712.00 570.50 431.50 175.50 154.00 109.50 72.00 177.00 333.50 755.50 820.50 5237.00
1994 669.50 718.00 568.50 388.00 240.50 162.00 35.00 18.00 75.50 421.50 716.00 797.50 4810.00
1995 745.50 580.50 592.50 436.50 219.50 135.00 27.00 112.50 79.50 0.00 z 519.00 743.00 4190.50
1996 801.00 684.50 580.00 378.00 390.00 178.50 64.50 55.50 226.00 451.00 661.50 844.50 5315.00
1997 768.50 631.50 615.50 465.50 206.00 146.00 46.00 9.50 0.00 z 403.50 0.00 z 0.00 z 3292.00
1998 724.00 576.00 568.00 413.00 0.00 z 0.00 z 3.00 0.50 35.50 410.00 0.00 z 798.00 3528.00
1999 719.00 619.50 620.00 503.50 397.50 214.00 95.50 43.50 184.00 433.50 533.00 734.00 5097.00
2000 787.00 618.00 616.00 395.00 282.50 139.00 55.50 66.50 147.50 389.50 684.00 779.00 4959.50
2001 724.00 658.00 571.50 445.00 235.00 93.00 n 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2633.50
2002 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.00 v 54.00 180.00 468.50 560.00 715.50 1978.00
2003 657.50 663.00 565.50 461.00 309.00 124.00 25.50 17.00 121.00 332.00 722.00 760.00 4757.50
2004 789.00 637.50 525.00 347.00 247.50 91.50 23.00 6.00 176.50 375.00 625.00 738.50 4581.50
2005 757.20 d 656.00 497.00 0.00 z 219.00 152.50 49.00 32.00 199.50 331.00 702.00 805.00 4400.20
2006 653.50 695.50 608.50 464.50 303.00 108.50 38.00 67.00 166.00 450.50 657.50 800.50 5013.00
2007 881.00 630.50 584.50 467.50 306.50 189.00 36.00 80.50 241.50 476.50 697.50 851.50 5442.50
2008 890.00 674.00 713.00 595.50 337.50 277.50 73.00 f 34.50 r 216.43 b 484.50 558.50 959.00 5705.93
2009 914.00 704.50 761.00 547.50 0.00 z 0.00 z 0.00 z 79.00 166.00 510.00 634.00 990.00 5306.00
2010 679.50 597.50 597.00 519.00 438.00 246.50 105.50 129.50 185.50 426.50 732.00 773.50 5430.00
2011 822.50 806.00 681.00 637.50 461.90 a 244.50 150.50 101.50 142.50 473.00 758.50 907.00 6186.40
2012 882.50 714.00 761.00 469.00 372.00 157.50 l 99.00 84.00 206.79 b 488.00 649.50 832.50 5558.29
2013 1040.57 a 681.85 a 648.00 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 2370.42
Period of Record Statistics
MEAN 816.15 655.25 618.98 454.53 299.72 156.48 68.79 63.49 171.64 407.40 632.15 787.95 5140.16
S.D. 131.62 88.01 72.66 64.55 59.97 46.01 33.79 35.26 50.61 59.38 85.71 90.23 381.42
SKEW 1.12 0.83 0.05 0.33 0.13 0.17 0.40 0.50 -0.34 0.01 0.31 0.43 0.23
MAX 1245.50 980.00 788.00 637.50 461.90 277.50 155.50 151.50 277.50 545.50 932.00 994.00 6186.40
MIN 603.47 464.50 452.50 313.50 172.05 43.00 2.50 0.50 35.50 281.50 434.00 611.00 4331.09
NO YRS 79 81 81 80 77 78 78 81 81 81 78 80 60