MOTT IS ISLE ROYALE, MICHIGAN

Monthly Total Heating Degree Days

(205637)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201108
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 603.00 365.00 178.25 a 100.23 a 71.00 t 0.00 z 0.00 z 0.00 z 1246.48
1949 0.00 z 0.00 z 0.00 z 0.00 z 609.00 319.14 a 200.50 103.00 402.50 591.50 743.00 g 0.00 z 2225.64
1950 0.00 z 0.00 z 0.00 z 0.00 z 404.50 l 405.50 367.00 358.50 410.00 634.31 e 1111.00 0.00 z 3286.31
1951 0.00 z 0.00 z 0.00 z 0.00 z 391.00 h 459.23 d 187.00 202.00 394.50 713.00 0.00 z 0.00 z 1955.73
1952 0.00 z 0.00 z 0.00 z 0.00 z 552.50 338.28 a 213.00 97.50 276.00 738.83 a 495.50 m 0.00 z 2216.11
1953 0.00 z 0.00 z 0.00 z 0.00 z 618.93 b 349.00 138.00 79.50 338.00 513.00 351.00 q 0.00 z 2036.43
1954 0.00 z 0.00 z 0.00 z 0.00 z 491.50 i 308.28 a 166.88 a 96.00 337.00 632.92 a 0.00 z 0.00 z 1541.08
1955 0.00 z 0.00 z 0.00 z 0.00 z 347.50 h 305.50 89.90 a 26.50 280.00 577.00 197.00 w 0.00 z 1278.90
1956 0.00 z 0.00 z 0.00 z 0.00 z 663.73 c 203.00 g 201.50 a 147.25 a 428.08 d 527.50 450.50 m 0.00 z 1968.06
1957 0.00 z 0.00 z 0.00 z 0.00 z 177.50 t 386.50 212.00 142.17 b 358.39 b 600.50 0.00 z 0.00 z 1699.57
1958 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 430.50 214.00 136.50 317.50 0.00 z 0.00 z 0.00 z 1098.50
1959 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 316.00 134.00 73.50 300.00 0.00 z 0.00 z 0.00 z 823.50
1960 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 228.50 130.20 a 346.67 c 611.50 0.00 z 0.00 z 1316.87
1961 0.00 z 0.00 z 0.00 z 0.00 z 599.73 e 320.17 a 210.11 d 91.97 a 282.32 b 602.00 0.00 z 0.00 z 2106.30
1962 0.00 z 0.00 z 0.00 z 0.00 z 604.50 b 448.89 c 297.94 d 127.74 b 379.66 a 579.04 c 188.50 x 0.00 z 2437.77
1963 0.00 z 0.00 z 0.00 z 0.00 z 635.50 d 400.56 c 161.00 110.50 f 196.50 h 245.00 f 0.00 z 0.00 z 1197.06
1964 0.00 z 0.00 z 0.00 z 0.00 z 338.50 i 447.50 146.50 228.50 415.86 a 696.00 78.50 z 0.00 z 1934.36
1965 0.00 z 0.00 z 0.00 z 0.00 z 574.69 e 355.00 263.00 236.78 b 471.50 643.00 0.00 z 0.00 z 2543.97
1966 0.00 z 0.00 z 0.00 z 0.00 z 609.87 e 348.50 122.00 176.50 276.50 282.50 p 0.00 z 0.00 z 1533.37
1967 0.00 z 0.00 z 0.00 z 0.00 z 737.59 b 390.50 249.50 172.50 274.50 375.50 l 0.00 z 0.00 z 1824.59
1968 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 387.00 261.95 a 221.50 315.00 355.00 h 0.00 z 0.00 z 1185.45
1969 0.00 z 0.00 z 0.00 z 0.00 z 232.50 r 437.00 204.60 a 44.50 284.50 428.50 k 0.00 z 0.00 z 970.60
1970 0.00 z 0.00 z 0.00 z 0.00 z 502.50 g 340.00 168.00 62.50 294.00 371.00 k 0.00 z 0.00 z 864.50
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 387.50 213.00 176.00 274.14 a 446.06 d 0.00 z 0.00 z 1496.69
1972 0.00 z 0.00 z 0.00 z 0.00 z 461.50 f 375.50 269.00 152.50 388.00 746.00 0.00 z 0.00 z 1931.00
1973 0.00 z 0.00 z 0.00 z 0.00 z 274.00 o 423.62 a 220.00 98.50 292.76 a 0.00 z 0.00 z 0.00 z 1034.88
1974 0.00 z 0.00 z 0.00 z 0.00 z 297.50 n 365.50 187.00 157.00 451.50 665.98 a 0.00 z 0.00 z 1826.98
1975 0.00 z 0.00 z 0.00 z 0.00 z 525.89 c 319.50 f 107.00 f 87.12 b 401.11 c 570.00 0.00 z 0.00 z 1584.12
1976 0.00 z 0.00 z 0.00 z 0.00 z 585.00 353.00 119.00 83.00 344.46 b 676.63 e 0.00 z 0.00 z 2161.10
1977 0.00 z 0.00 z 0.00 z 0.00 z 547.50 384.50 212.00 209.50 368.00 0.00 z 0.00 z 0.00 z 1721.50
1978 0.00 z 0.00 z 0.00 z 0.00 z 564.00 384.50 222.00 107.50 281.00 0.00 z 0.00 z 0.00 z 1559.00
1979 0.00 z 0.00 z 0.00 z 0.00 z 330.00 m 366.00 244.00 190.50 290.00 0.00 z 0.00 z 0.00 z 1090.50
1980 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 366.21 a 0.00 z 0.00 z 0.00 z 299.50 q 0.00 z 0.00 z 366.21
1981 0.00 z 0.00 z 0.00 z 0.00 z 483.00 f 403.50 185.00 39.00 313.97 a 190.50 v 0.00 z 0.00 z 941.47
1982 0.00 z 0.00 z 0.00 z 0.00 z 279.50 n 414.50 202.00 232.00 0.00 z 0.00 z 0.00 z 0.00 z 848.50
1983 0.00 z 0.00 z 0.00 z 0.00 z 287.50 q 376.50 131.00 13.50 231.00 0.00 z 0.00 z 0.00 z 752.00
1984 0.00 z 0.00 z 0.00 z 0.00 z 220.50 p 368.00 166.00 64.50 320.50 545.00 0.00 z 0.00 z 1464.00
1985 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 393.00 185.50 136.50 306.00 0.00 z 302.50 o 0.00 z 1021.00
1986 0.00 z 0.00 z 0.00 z 0.00 z 100.50 u 309.00 210.50 126.00 345.00 390.50 m 0.00 z 0.00 z 990.50
1987 0.00 z 0.00 z 0.00 z 0.00 z 298.50 n 234.83 a 79.50 75.00 179.50 199.00 w 0.00 z 0.00 z 568.83
1988 0.00 z 0.00 z 0.00 z 0.00 z 577.50 243.62 a 91.50 80.50 299.50 420.00 k 0.00 z 0.00 z 1292.62
1989 0.00 z 0.00 z 0.00 z 0.00 z 155.50 t 449.00 171.50 119.50 244.50 311.00 p 0.00 z 0.00 z 984.50
1990 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 365.50 177.00 113.00 146.00 k 0.00 z 0.00 z 0.00 z 655.50
1991 0.00 z 0.00 z 0.00 z 0.00 z 129.50 u 271.00 211.50 56.50 324.00 392.00 l 0.00 z 0.00 z 863.00
1992 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 362.00 320.00 127.00 323.50 0.00 z 0.00 z 0.00 z 1132.50
1993 0.00 z 0.00 z 0.00 z 0.00 z 272.00 q 354.50 200.50 44.00 382.00 112.00 y 0.00 z 0.00 z 981.00
1994 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 0.00 z 0.00 z 0.00 z 0.00
1995 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 324.50 170.50 c 19.00 277.50 269.50 n 0.00 z 0.00 z 791.50
1996 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 312.50 183.00 107.50 257.00 338.00 m 0.00 z 0.00 z 860.00
1997 0.00 z 0.00 z 0.00 z 0.00 z 276.50 q 298.00 200.50 96.50 185.50 217.00 p 0.00 z 0.00 z 780.50
1998 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6.50 119.50 345.50 j 0.00 z 0.00 z 126.00
1999 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 255.50 74.50 43.00 222.93 a 316.50 n 0.00 z 0.00 z 595.93
2000 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 82.00 263.50 370.00 h 0.00 z 0.00 z 345.50
2001 0.00 z 0.00 z 0.00 z 58.50 z 538.37 a 326.00 185.48 a 14.50 0.00 z 0.00 z 0.00 z 0.00 z 1064.35
2002 0.00 z 0.00 z 0.00 z 0.00 z 324.00 m 288.21 b 49.27 c 47.50 0.00 z 0.00 z 0.00 z 0.00 z 384.98
2003 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 139.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 139.00
2004 0.00 z 0.00 z 0.00 z 0.00 z 484.00 f 315.00 163.00 159.00 220.00 182.00 s 0.00 z 0.00 z 857.00
2005 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 0.00 z 0.00 z 0.00 z 0.00
2006 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 0.00 z 0.00 z 0.00 z 0.00
2007 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 8.50 u 153.50 f 0.00 z 0.00 z 0.00 z 0.00
2008 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 0.00 z 0.00 z 0.00 z 0.00
2009 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 0.00 z 0.00 z 0.00 z 0.00
2010 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 0.00 z 0.00 z 0.00 z 0.00
2011 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.50 f 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.00 596.90 358.58 188.42 115.46 314.35 615.49 1111.00 0.00 0.00
S.D. 0.00 0.00 0.00 0.00 51.01 53.70 60.06 69.05 71.79 77.37 0.00 0.00 0.00
SKEW 0.00 0.00 0.00 0.00 1.13 -0.22 0.23 0.91 -0.13 -0.15 0.00 0.00 0.00
MAX 9999.00 - 9999.00 - 9999.00 - 9999.00 737.59 459.23 367.00 358.50 471.50 746.00 1111.00 - 9999.00 -9999.00
MIN 9999.00 9999.00 9999.00 9999.00 525.89 234.83 49.27 6.50 119.50 446.06 1111.00 9999.00 9999.00
NO YRS 0 0 0 0 17 50 52 53 48 20 1 0 0