MERCED MUNICIPAL ARPT, CALIFORNIA

Monthly Total Heating Degree Days

(045532)

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
1899 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.17 a 0.00 0.00 0.00 189.50 327.00 695.36 b 1217.03
1900 577.93 c 450.00 253.68 a 279.83 a 87.32 a 1.61 b 0.00 z 0.00 z 0.00 z 0.00 z 265.86 a 0.00 z 1916.23
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 20.69 a 56.00 270.52 a 630.00 977.21
1902 741.50 464.50 510.50 232.00 84.73 a 8.00 0.00 0.00 a 4.50 86.00 447.00 631.00 3209.73
1903 733.50 623.50 0.00 z 278.00 62.00 1.00 0.00 b 0.00 c 21.00 115.00 431.00 670.50 2935.50
1904 625.50 345.41 a 257.00 193.39 b 35.50 2.00 0.00 a 0.00 8.00 0.00 z 307.00 586.00 2359.80
1905 484.50 343.00 251.00 126.72 a 92.00 0.00 0.00 z 0.00 c 18.50 110.00 387.50 654.10 a 2467.32
1906 514.50 283.00 354.50 210.52 a 126.21 c 18.00 0.00 0.00 6.00 72.85 a 392.00 602.50 2580.08
1907 671.00 298.50 394.73 a 129.50 78.53 a 23.08 d 0.00 0.00 0.00 z 95.98 e 0.00 z 559.66 c 2250.99
1908 579.70 a 570.00 360.00 0.00 z 178.50 35.00 0.00 0.00 a 13.50 215.00 402.50 671.00 3025.20
1909 512.50 473.50 449.50 90.50 131.00 44.50 3.50 0.00 6.00 124.50 410.00 447.00 2692.50
1910 506.50 441.50 0.00 z 0.00 z 0.00 z 0.00 2.00 0.00 3.50 44.00 341.00 545.00 1883.50
1911 525.00 496.00 360.50 267.50 102.00 0.00 0.00 0.00 10.50 104.50 361.00 540.50 2767.50
1912 568.50 495.00 399.50 281.50 50.50 4.00 0.00 0.00 5.00 134.00 308.28 a 518.00 2764.28
1913 523.50 392.50 346.00 195.00 56.00 11.00 0.00 0.00 0.00 61.50 308.00 570.00 2463.50
1914 455.00 360.50 242.50 157.50 11.50 10.00 0.00 0.00 2.50 103.00 313.50 655.00 2311.00
1915 579.00 391.00 275.00 191.00 143.50 0.00 0.00 0.00 13.00 53.50 389.00 563.50 2598.50
1916 654.00 340.00 298.00 155.50 96.00 9.00 0.00 0.00 1.55 a 230.00 487.00 679.00 2950.05
1917 745.00 437.00 471.50 237.00 142.00 1.00 0.00 0.00 3.50 71.50 329.50 545.50 2983.50
1918 617.50 455.00 339.50 199.00 103.50 0.00 0.00 0.00 5.50 80.00 443.00 693.00 2936.00
1919 644.00 492.00 464.50 190.00 13.50 0.00 0.00 0.00 a 16.00 196.50 477.00 618.00 3111.50
1920 605.50 462.50 460.00 236.50 73.50 0.00 0.00 0.00 17.00 216.50 416.00 579.50 3067.00
1921 589.00 408.50 278.00 209.00 128.00 7.00 0.00 0.00 9.50 98.50 355.50 532.50 2615.50
1922 758.00 470.00 458.00 279.00 69.50 3.50 0.00 0.00 0.00 108.50 504.50 533.00 3184.00
1923 643.50 488.00 335.00 264.50 79.50 6.50 0.00 0.00 23.50 135.50 306.00 670.00 2952.00
1924 638.00 305.50 440.00 137.50 12.00 2.00 0.00 0.00 2.50 164.00 392.00 627.50 2721.00
1925 589.00 353.00 368.00 200.00 30.00 12.00 0.00 0.00 12.00 122.00 399.50 602.50 2688.00
1926 731.00 349.50 193.50 61.50 40.50 0.00 0.00 0.00 11.00 66.50 202.00 604.00 2259.50
1927 556.00 354.50 396.00 238.50 41.00 0.00 0.00 0.00 8.00 50.50 345.50 602.00 2592.00
1928 613.50 434.50 230.50 178.00 9.50 2.00 0.00 0.00 2.50 111.50 354.50 680.50 2617.00
1929 722.00 479.50 353.00 271.50 12.00 29.50 0.00 0.00 0.00 z 92.50 378.50 491.50 2830.00
1930 644.00 332.50 328.00 150.50 122.00 3.50 0.00 0.00 12.50 141.00 357.50 690.50 2782.00
1931 575.00 390.00 334.50 82.00 1.00 0.00 0.00 0.00 17.50 115.00 423.00 614.00 2552.00
1932 666.00 513.00 332.00 226.50 48.50 8.50 0.00 0.00 0.00 133.50 222.00 736.50 2886.50
1933 710.50 531.50 337.50 190.50 179.50 11.50 0.00 0.00 0.50 18.50 337.00 621.00 2938.00
1934 622.58 a 368.00 189.50 61.00 23.00 12.50 0.00 0.00 32.00 100.00 351.50 607.50 2367.58
1935 619.50 469.50 508.00 226.50 68.50 0.00 0.00 0.00 0.00 159.00 484.00 594.00 3129.00
1936 546.00 476.50 334.50 185.00 38.50 6.72 a 0.00 0.00 6.00 78.50 386.50 663.50 2721.72
1937 846.50 472.50 378.50 259.50 43.00 6.00 0.00 0.00 0.00 57.50 337.00 547.00 2947.50
1938 669.50 445.50 439.50 229.50 69.00 0.00 0.00 0.00 0.00 119.50 494.00 558.50 3025.00
1939 619.50 571.00 383.50 88.50 44.00 7.50 0.00 0.00 10.00 137.50 371.50 563.00 2796.00
1940 545.50 403.00 302.00 157.50 21.00 0.00 0.00 0.00 3.00 108.00 449.00 511.00 2500.00
1941 501.50 369.00 297.00 252.00 23.50 4.00 0.00 0.00 1.00 147.00 362.50 485.00 2442.50
1942 546.50 464.00 377.00 180.50 92.00 0.00 0.00 0.00 0.00 77.50 a 346.00 0.00 z 2083.50
1943 596.23 a 409.00 327.50 183.00 34.50 14.00 0.00 0.00 a 0.00 140.00 360.50 563.00 2627.73
1944 570.50 492.50 376.50 274.00 48.00 19.50 0.00 x 0.00 8.00 43.50 435.00 579.00 2846.50
1945 688.00 425.00 487.00 218.50 59.00 3.00 0.00 0.00 a 8.00 24.00 s 432.41 a 582.00 2902.91
1946 679.00 531.00 372.50 142.50 28.50 0.00 0.00 0.00 1.50 205.50 520.00 635.00 3115.50
1947 798.50 416.00 291.00 118.00 12.06 d 0.50 0.00 0.00 9.00 115.00 519.50 673.50 2953.06
1948 527.00 557.00 461.50 247.50 99.00 4.00 1.00 0.00 37.50 131.50 450.00 705.00 3221.00
1949 682.00 g 576.07 a 394.00 92.00 46.50 a 1.50 0.00 a 0.00 6.00 181.83 e 293.00 672.00 2262.90
1950 729.00 420.00 336.50 113.28 a 71.00 f 7.50 0.00 0.00 a 13.45 a 63.72 d 245.00 453.00 2381.45
1951 204.50 s 439.00 365.50 150.00 56.50 4.50 0.00 0.00 0.00 90.00 291.50 604.50 2001.50
1952 596.50 426.00 430.50 148.50 27.00 15.50 0.00 0.00 13.00 25.00 400.50 525.00 2607.50
1953 453.63 a 415.00 352.00 167.50 111.00 19.50 0.00 b 0.00 0.50 82.00 h 312.50 584.00 2415.63
1954 447.00 g 426.00 396.00 92.59 a 23.00 19.80 e 0.00 0.00 3.00 82.84 b 370.00 537.00 f 1413.23
1955 523.50 g 485.33 a 366.46 c 269.48 a 23.50 j 5.19 d 0.00 0.00 1.50 60.00 h 410.36 b 324.00 h 1538.33
1956 403.00 f 523.00 305.00 164.48 a 46.50 2.22 c 0.00 f 0.00 a 0.00 a 133.96 c 198.50 l 452.00 h 1175.17
1957 695.36 b 333.41 a 308.34 c 132.93 a 54.25 a 1.50 i 0.00 d 1.50 k 0.54 b 136.06 d 421.07 b 632.29 b 2714.25
1958 533.89 d 296.69 b 421.50 177.50 15.50 0.52 a 0.00 d 0.00 3.10 a 51.48 c 388.93 b 496.00 2385.11
1959 505.50 464.24 c 245.23 c 61.00 51.84 b 0.00 e 0.00 d 2.30 d 20.00 64.14 b 351.50 594.00 2359.75
1960 580.22 a 425.16 a 243.50 174.31 a 59.50 0.00 e 0.00 a 0.00 a 0.00 a 106.95 a 416.25 b 656.00 2661.89
1961 677.02 c 354.50 333.00 136.00 51.15 a 2.31 d 0.00 e 0.00 c 3.00 123.47 b 369.83 a 630.00 2680.27
1962 738.32 a 479.50 414.00 98.50 84.50 8.50 0.00 0.00 c 0.00 b 100.50 304.66 a 590.55 a 2819.02
1963 717.28 b 226.50 350.00 280.18 b 39.27 a 3.21 b 0.00 b 0.00 a 0.00 64.00 407.00 791.50 2878.94
1964 654.00 493.50 368.90 a 190.38 d 101.27 a 16.50 0.00 0.00 7.00 48.50 416.00 460.50 2756.55
1965 565.50 438.00 320.50 221.00 71.00 13.00 0.00 0.00 14.50 35.00 304.66 a 686.50 2669.66
1966 584.35 a 455.50 257.30 a 87.93 a 10.50 9.64 b 0.00 a 0.00 b 3.00 65.00 261.00 588.48 a 2322.71
1967 598.82 a 464.50 365.80 a 421.07 b 93.53 b 23.79 a 0.00 0.00 0.00 20.50 219.83 a 652.55 a 2860.39
1968 620.00 b 233.55 a 255.50 138.62 a 46.50 1.50 0.00 b 0.00 3.75 b 60.00 347.07 a 618.00 2324.49
1969 606.50 509.38 b 340.50 170.17 a 28.50 h 2.14 b 0.00 0.00 0.00 a 180.66 b 370.18 b 594.68 a 2774.22
1970 574.03 b 353.63 a 305.50 237.22 c 36.50 1.55 a 0.00 0.00 a 1.00 119.19 b 308.50 578.48 c 2515.61
1971 586.42 a 488.00 341.00 193.85 d 81.00 16.61 b 0.00 0.00 b 18.50 190.65 a 438.21 b 707.26 d 3061.49
1972 723.33 a 358.00 130.50 143.00 27.00 0.00 0.00 0.00 2.00 104.00 448.27 d 738.00 2674.10
1973 595.20 a 388.00 426.00 147.00 15.50 3.62 a 0.00 0.00 0.50 98.00 369.50 556.00 2599.32
1974 527.50 427.00 302.25 a 184.50 50.50 1.55 a 0.00 0.00 0.00 68.50 379.66 a 636.00 2577.46
1975 698.53 a 444.00 417.50 297.50 42.50 0.50 0.00 0.00 0.00 a 156.50 395.00 c 661.33 d 3113.37
1976 644.50 405.50 369.50 256.50 12.00 9.64 b 0.00 0.00 0.52 a 79.00 317.00 651.00 2745.16
1977 716.00 394.50 455.50 94.00 152.00 0.50 0.00 0.00 4.50 74.50 343.00 468.50 2703.00
1978 489.00 417.00 247.50 300.00 72.00 0.00 a 1.66 c 2.00 23.00 66.00 457.50 769.50 2845.16
1979 628.50 471.50 323.00 250.50 50.50 i 8.50 g 0.00 g 10.85 a 0.00 e 80.82 c 377.00 535.00 2677.17
1980 461.50 348.50 382.50 183.62 a 82.84 b 10.00 0.00 a 0.00 a 7.80 e 109.50 326.50 576.08 a 2488.85
1981 492.26 b 367.11 a 357.00 172.00 44.95 a 0.00 a 0.00 0.00 2.50 153.97 a 317.59 a 486.00 2393.37
1982 687.00 381.00 394.00 210.50 0.00 z 19.00 0.00 0.00 22.50 91.50 465.50 633.00 2904.00
1983 667.00 355.50 295.50 243.50 72.50 0.00 z 0.00 0.00 3.50 25.00 346.50 451.50 2460.50
1984 586.50 471.50 269.50 190.50 28.00 0.00 0.00 0.00 0.00 152.50 378.00 603.50 2680.00
1985 710.50 431.50 428.50 68.50 37.50 0.00 z 0.00 0.00 15.00 144.50 421.00 754.50 3011.50
1986 425.50 323.50 234.00 183.50 62.50 0.00 0.00 0.00 37.00 46.00 313.50 0.00 z 1625.50
1987 654.00 387.50 0.00 z 82.00 0.00 z 0.00 0.00 0.00 0.00 15.00 376.50 553.50 2068.50
1988 561.00 376.00 264.00 106.50 69.00 16.50 0.00 0.00 3.50 43.00 322.00 637.50 2399.00
1989 88.50 z 490.00 246.50 85.50 0.00 z 0.00 0.00 0.00 8.00 94.50 372.00 698.50 1995.00
1990 602.00 488.50 301.00 53.50 24.50 2.00 0.00 0.00 0.00 25.00 374.50 762.50 2633.50
1991 584.50 278.50 408.50 200.50 75.50 0.00 0.00 0.00 0.00 91.50 313.00 630.50 2582.50
1992 710.50 326.00 259.00 88.50 1.00 4.50 0.00 0.00 0.00 28.50 348.50 618.00 2384.50
1993 587.00 385.50 206.00 169.50 24.00 4.50 0.00 k 0.00 0.00 18.50 352.00 611.50 2358.50
1994 567.00 444.50 223.50 142.00 41.00 0.00 0.00 0.00 1.00 84.00 479.00 635.50 2617.50
1995 422.00 341.00 322.50 178.50 89.00 27.50 0.00 0.00 0.00 27.50 178.50 428.00 2014.50
1996 512.00 302.00 256.50 124.00 17.50 0.00 0.00 0.00 1.00 146.00 323.00 467.50 2149.50
1997 521.00 372.00 215.50 116.50 5.00 4.50 0.00 0.00 0.00 83.50 249.50 630.00 2197.50
1998 497.50 391.50 263.00 219.50 116.00 0.50 0.00 0.00 2.50 92.50 353.50 691.00 2627.50
1999 626.00 449.00 404.00 272.59 a 44.43 a 17.00 0.00 0.00 a 0.00 a 20.00 285.00 581.52 b 2699.54
2000 463.34 c 338.50 288.00 93.00 38.00 0.50 0.00 0.00 0.00 a 95.00 460.86 a 534.00 2311.20
2001 601.40 a 424.50 222.50 211.03 a 0.00 a 0.00 a 0.00 0.00 a 0.00 b 31.00 273.21 b 551.11 d 2314.76
2002 639.00 385.50 342.50 138.50 35.28 b 0.00 z 0.00 c 0.00 3.00 105.50 308.50 486.00 2443.78
2003 506.00 418.50 283.50 246.50 63.50 0.00 0.00 0.00 a 0.00 23.50 390.50 472.00 2404.00
2004 574.00 414.50 140.50 87.00 10.00 0.00 0.00 0.00 20.00 c 133.50 403.50 595.00 2378.00
2005 581.00 323.00 257.50 197.50 33.50 2.00 0.00 0.00 1.00 40.50 262.00 446.50 2144.50
2006 525.00 383.50 465.00 179.00 10.50 0.00 0.00 0.00 19.50 111.00 336.50 601.50 2631.50
2007 697.00 460.50 271.25 a 142.00 20.87 e 4.00 0.00 g 0.00 11.50 110.00 277.00 613.28 a 2607.40
2008 586.50 455.00 302.50 194.50 35.00 0.00 0.00 0.00 0.00 51.00 250.00 632.50 2507.00
2009 566.50 402.00 329.00 195.50 9.50 0.00 0.00 0.00 5.50 117.00 347.00 602.00 2574.00
2010 543.00 358.50 350.00 278.50 105.00 1.50 0.00 0.00 5.50 80.00 359.00 473.50 2554.50
2011 633.71 e 471.52 c 367.87 a 168.00 115.70 c 19.14 a 0.00 0.00 d 0.50 f 81.24 b 431.67 c 689.20 c 2978.04
2012 430.00 h 311.50 h 261.50 h 109.50 k 14.00 f 5.50 i 0.00 k 0.00 l 0.00 h 63.72 d 268.00 509.50 841.22
2013 625.00 455.00 186.50 4.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 23.00 z 1266.50
Period of Record Statistics
MEAN 605.01 418.99 334.16 181.44 57.62 6.18 0.08 0.14 6.46 96.73 363.29 599.20 2661.47
S.D. 84.06 73.02 79.83 67.29 40.26 8.46 0.43 1.07 8.27 48.93 69.86 78.34 272.02
SKEW 0.20 -0.03 -0.05 0.28 0.87 1.92 6.24 9.40 1.65 0.49 -0.05 -0.06 0.09
MAX 846.50 623.50 510.50 421.07 179.50 44.50 3.50 10.85 37.50 230.00 520.00 791.50 3221.00
MIN 422.00 226.50 130.50 53.50 0.00 0.00 0.00 0.00 0.00 15.00 178.50 428.00 2014.50
NO YRS 106 112 109 109 103 107 105 111 109 109 112 108 80