MERCED MUNICIPAL ARPT, CALIFORNIA

Monthly Total Heating Degree Days

(045532)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.50 0.00 31.50 j 131.50 450.00 705.00 1287.00
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 525.00 383.50 465.00 181.50 23.25 a 0.00 a 0.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1578.25
Period of Record Statistics
MEAN 592.37 403.98 319.63 169.62 49.35 5.65 0.04 0.27 4.75 84.35 354.01 599.45 2553.36
S.D. 83.72 69.61 76.57 71.36 32.02 7.42 0.23 1.48 7.77 46.95 65.24 90.78 246.82
SKEW -0.09 -0.26 -0.21 0.81 0.84 1.29 6.47 6.63 2.12 0.38 -0.27 -0.02 0.04
MAX 738.32 576.07 465.00 421.07 152.00 27.50 1.66 10.85 37.00 190.65 479.00 791.50 3113.37
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 52 58 57 58 51 53 55 57 57 56 57 54 39