Lake Vermilion's "Iceman" has collected and organized historical "ice-out" data
and has organized it in a data base to help in guessing this year's "ice-out".
It is arranged in the table below or can be downloaded in Excel file from HERE,
then save the file. For those of you who like number-crunching, enjoy!!


Legend:

  • Column A: Iceout Day--The day the ice went out according to the DNR.
  • Column B: Day No.--The day of the year that the ice went out. A day is added
    to correct for a leap year.
  • Column C: Dec.TH--The average high temperature in Fahrenheit for Dec. of the
    previous year before iceout.
  • Column D: Dec.TL--The average low temperature in Fahrenheit for Dec. of the
    previous year before iceout.
  • Column E: Dec.S--Snow fall total in inches for Dec. of the previous year before
    iceout.
  • Columns F though T: Average high/low temperatures and snow fall totals for
    months January to May of iceout year.

  • Note: Average high/low temperatures and snow fall totals in April/May are
    from April 1 and May 1 to the iceout date minus 1 day.


    • Iceout vs. Weather Conditions

    Iceout Day
    Day No.
    Dec(TH)
    Dec(TL)
    Dec(S)
    Jan(TH)
    Jan(TL)
    Jan(S)
    Feb(TH)
    Feb(TL)
    Feb(S)
    Mar(TH)
    Mar(TL)
    Mar(S)
    Apr(TH)
    Apr(TL)
    Apr(S)
    May(Th)
    May(TL)
    May(S)
    4/10/1945
    100
    18.9
    3.5
    8.1
    13.8
    -1.5
    10.2
    21.4
    3.1
    16.5
    42.9
    23.9
    5
    43.6
    25.7
    14.5
    		      
    4/11/1910
    101
    17.4
    4.1
    8.9
    20.2
    -1.3
    2.7
    17.2
    -8.9
    5.4
    50.9
    21.5
    0.7
    62.1
    32.5
    0
    		      
    4/13/1998
    103
    29.5
    13.8
    5.5
    21.5
    5
    9.5
    36
    20
    1.2
    36.1
    14.4
    4.1
    51
    27.4
    4.8
    		      
    4/14/1939
    104
    20.1
    5.7
    11.5
    21.3
    3.3
    13.3
    12.8
    -9
    24.5
    30.8
    9.1
    11.7
    33.2
    13.4
    0
    		      
    4/16/1987
    106
    26
    2.1
    10
    22.9
    0.4
    12.5
    33.8
    12.3
    9
    41.3
    16.8
    3.5
    58.9
    20.3
    4
    		      
    4/17/1976
    108
    21
    -4.6
    11.5
    14.7
    -14.8
    26
    31.8
    -0.4
    9
    31.9
    4.4
    28
    56.2
    22.1
    0
    		      
    4/18/1931
    108
    22
    5.6
    5.7
    22.5
    6.2
    9.6
    31.9
    14.1
    1.9
    33.5
    16.4
    8.5
    59.6
    30.9
    0
    		      
    4/18/1941
    108
    24.3
    6.4
    4
    18.7
    -1.2
    16.7
    23.4
    -2.8
    10.2
    32.5
    10.2
    9.7
    56.8
    38.8
    0
    		      
    4/18/2006
    108
    21.6
    7.6
    10.7
    28.6
    9.5
    7.2
    20.7
    -8.4
    13.7
    38
    17.1
    8.3
    60.6
    33.9
    0
    		      
    4/19/1938
    109
    18.2
    -7.4
    11
    10.6
    -9.5
    11.3
    24.5
    2.5
    11.7
    42.3
    19.5
    2
    46.4
    20.1
    0
    		      
    4/19/1940
    110
    30.6
    16.9
    2.5
    13.5
    -2.6
    6.3
    23.6
    8.3
    13.9
    26.3
    8.9
    10.3
    44.6
    23.1
    5
    		      
    4/19/1958
    109
    24.6
    6.6
    5.2
    23.2
    5.6
    8.5
    20.2
    -1.4
    3
    37.8
    18.2
    7.8
    58.1
    29.3
    0
    		      
    4/19/2005
    109
    16
    -7.4
    12
    13.6
    -12.5
    30.3
    28.2
    0.2
    7.9
    35.1
    2.1
    3.7
    62
    35
    0
    		      
    4/20/1946
    110
    14.4
    0.8
    14.4
    14.8
    -0.7
    16
    14.4
    -3.7
    8.2
    45
    23.6
    6.5
    45.8
    28.2
    8
    		      
    4/20/1967
    110
    19.9
    -1.2
    19.2
    18.4
    -5.3
    17.5
    17.1
    -15.6
    10.6
    36.7
    10.4
    11.2
    52.5
    24.1
    0.3
    		      
    4/20/1973
    110
    13.5
    -8.5
    10.4
    21.7
    -3.1
    3
    24.4
    -4
    3
    42.9
    20.1
    0
    47.1
    23.1
    2
    		      
    4/20/1986
    110
    10.3
    -11.6
    13
    19.7
    -5.2
    15
    20.9
    -7.7
    16
    38.8
    10.1
    5
    52.8
    27.2
    0
    		      
    4/21/1930
    111
    13.5
    -0.8
    18
    4
    -13.8
    7.2
    24
    5.6
    19
    31
    11
    8
    54.3
    29.8
    0
    		      
    4/21/2000
    112
    27.9
    3.9
    5
    17.9
    -15.9
    8
    29.4
    -0.2
    4
    43.4
    15.3
    5.5
    42.9
    17.9
    9.1
    		      
    4/22/1915
    112
    16.5
    -5.5
    7
    15.1
    -8.3
    6.5
    30.2
    4.6
    6
    40.2
    7.5
    4.5
    63.7
    32.1
    0
    		      
    4/22/1955
    112
    24.5
    11.3
    2.7
    17
    -1.1
    13
    20.2
    -0.6
    20
    30.8
    4.9
    22
    55.8
    35
    0
    		      
    4/22/1981
    112
    18.6
    -5.9
    7
    22
    -8.1
    1
    25.3
    1.3
    17.5
    38.7
    12.9
    2.5
    52.1
    24
    2.5
    		      
    4/23/1906
    113
    27.7
    5
    2
    25.8
    3.8
    3.2
    22.6
    -6.1
    0.1
    29.3
    5.1
    9.1
    54.6
    28.3
    4
    		      
    4/24/1925
    114
    8.1
    -8.7
    7.9
    11.9
    -3.9
    5.2
    19.2
    2.2
    11.7
    29.8
    12.5
    5
    50.7
    30.9
    2.5
    		      
    4/24/1942
    114
    26.2
    10.3
    8.5
    21.5
    1.6
    10.6
    20.3
    -3.3
    5.1
    37.6
    14.7
    22.7
    55.3
    30.1
    1
    		      
    4/24/1984
    115
    8.8
    -18
    12.5
    11.7
    -10.4
    7.5
    30.9
    8.5
    1
    30.5
    0.1
    6
    55
    24.2
    0
    		      
    4/25/1929
    115
    23.3
    8.5
    8.5
    0.7
    -18.3
    13.7
    12.6
    -5.7
    3.7
    33
    15.5
    15.5
    48.4
    26.8
    0
    		      
    4/25/1969
    115
    18.7
    -0.9
    29.8
    14.5
    -6.8
    42.3
    24.8
    -3.5
    4
    34.6
    2.7
    1.9
    53.8
    26.3
    0
    		      
    4/25/1980
    116
    27.2
    2.6
    5
    16.2
    -10.9
    12
    20.4
    -7.9
    14
    30.9
    -2.2
    14
    52.4
    23.8
    6
    		      
    4/25/1988
    116
    27.3
    9.8
    6
    11.9
    -13.5
    17
    17.8
    -14.7
    0
    33.8
    10.2
    22
    50.4
    21
    0
    		      
    4/26/1949
    116
    22.5
    7.2
    25
    19.4
    1.8
    21.7
    18.4
    -1.2
    8.2
    30
    12.4
    7.5
    50.2
    30.8
    5
    		      
    4/26/1977
    116
    14.7
    -16.6
    13
    7.5
    -20.2
    5
    24.2
    -0.4
    9
    41.5
    17.1
    19
    55.1
    27.8
    0
    		      
    4/26/1991
    116
    19.5
    -7.5
    16
    13.2
    -15
    14
    28.5
    -1.4
    16
    38
    11.4
    14
    54.3
    24.3
    3
    		      
    4/27/1990
    117
    9.6
    -14.8
    4
    27.2
    -0.1
    18
    26.1
    -11.2
    14
    39.5
    12.7
    10
    51.3
    23.9
    4
    		      
    4/27/1999
    117
    24
    5.3
    10
    15.7
    -11.7
    8
    31.9
    0.2
    13
    38.8
    7.5
    4.6
    50.9
    24
    8
    		      
    4/28/1963
    118
    23.4
    2
    10.4
    8.1
    -11.6
    0.9
    17.4
    -9.8
    9.6
    40.5
    10.9
    27.5
    55
    27
    1
    		      
    4/28/1985
    118
    18.9
    -4.7
    5
    14.1
    -11.2
    5
    17.5
    -10.4
    11.5
    40.4
    14.7
    12
    50.8
    26.9
    0
    		      
    4/28/2004
    119
    28.4
    4.4
    13
    9.6
    -17.6
    24
    26.5
    -5.9
    13.6
    37.5
    9.9
    11
    50
    24.9
    0
    		      
    4/29/1948
    120
    20.5
    3.4
    8.5
    14.4
    -5.7
    12.7
    18.1
    -3.2
    12.5
    31.8
    10.8
    10.3
    51.5
    30.3
    5
    		      
    4/29/1952
    120
    18.9
    1.5
    10.5
    17.8
    -3.4
    11.5
    30.1
    11.1
    4.7
    33.6
    12.5
    14
    60.6
    30.1
    7.5
    		      
    4/29/1993
    119
    22.4
    -1.8
    22
    20.5
    -11.9
    16
    26
    -9
    3
    39.7
    6.3
    8
    48.3
    20.6
    3
    		      
    4/29/1994
    119
    21.7
    -1.8
    16
    4.5
    -27.6
    17.3
    18.1
    -15.6
    8
    36.1
    10.1
    12.1
    48.4
    20.4
    7
    		      
    4/29/2007
    119
    27.9
    10.1
    6.7
    19.2
    -0.2
    11.4
    14.4
    -11.2
    7.3
    39.1
    12.7
    12.1
    49.6
    19.8
    6.5
    		      
    4/30/1932
    121
    28.4
    15.3
    4
    20.7
    6
    14.5
    21.5
    0.1
    12
    22.5
    3.4
    14.7
    47.5
    27.4
    7.5
    		      
    4/30/1943
    120
    15.6
    -4.4
    16.5
    8.4
    -13.3
    15.9
    22.9
    -7
    12.9
    26.4
    -2.5
    9
    48.8
    26.2
    2.8
    		      
    4/30/1953
    120
    27.1
    13.9
    5.8
    19.8
    1.1
    22
    22.4
    2.4
    9.4
    35
    15.8
    11
    45.9
    25.6
    5.8
    		      
    4/30/1954
    120
    22.5
    5
    10.5
    13.3
    -6.5
    20.3
    34.4
    14.8
    6.1
    32.4
    10.8
    13
    48.5
    26.1
    0
    		      
    4/30/1997
    120
    17.3
    -2.7
    19
    13.4
    -10.9
    13
    26.6
    -5.8
    5
    34.2
    4.1
    15.9
    48.1
    19.8
    0
    		      
    4/30/2002
    120
    28.7
    8.2
    10
    22.6
    -0.8
    4
    30.2
    2.8
    4.3
    26.1
    -2.1
    15
    46.8
    22.4
    0.5
    		      
    5/1/1924
    122
    27.6
    13.9
    9
    5.6
    -12.1
    7.5
    22.3
    5.6
    2.8
    30.4
    15.5
    3.8
    42.8
    27.5
    7.7
    		      
    5/1/1926
    121
    14.4
    0.7
    8.5
    15.4
    -0.7
    5
    21.6
    6.6
    8.4
    26.7
    7.8
    12.2
    49.3
    24.5
    1.5
    		      
    5/1/1935
    121
    15.5
    -0.9
    17.9
    9.8
    -9.5
    31.2
    25.2
    7.2
    7
    29.7
    11.9
    16.2
    47.4
    24.4
    2.5
    		      
    5/1/1957
    121
    23.6
    3.6
    25.1
    10.2
    -11.8
    5.1
    21.9
    -1
    13
    36.2
    11.7
    13
    51
    27.8
    3.4
    		      
    5/1/1959
    121
    13.1
    -12
    13
    9.8
    -14.9
    6.5
    20
    -8.2
    4
    36.5
    13
    3.5
    48.2
    24.5
    4.3
    		      
    5/1/1983
    121
    24.9
    5.6
    8
    21.8
    -1.5
    19
    26.4
    5.6
    7
    35.9
    16.1
    3
    47.3
    21.1
    9
    		      
    5/1/1992
    122
    23.3
    -1.2
    12
    21.7
    -1.2
    12
    27.2
    4.6
    13
    37
    9.9
    1
    45.8
    23.7
    5
    		      
    5/1/2003
    121
    25.4
    1.8
    7
    15
    -11.4
    5
    19.6
    -13.9
    7.3
    32.7
    6.9
    10.5
    52.2
    27.9
    5.5
    		      
    5/2/1968
    123
    23.6
    3.4
    8.8
    18.3
    -7
    10.2
    21.4
    -7.3
    3.1
    42.6
    16.1
    11
    51.9
    27.2
    16.5
    72
    38
    0
    5/2/1971
    122
    20.5
    0.1
    15.4
    8.4
    -15.2
    17.1
    24.4
    -3.1
    16.3
    32.9
    7.8
    17
    52.2
    25.2
    6.3
    45
    32
    0
    5/2/2001
    122
    11.7
    -16.6
    15
    25.2
    -1.3
    12
    17.6
    -15.8
    26
    34.7
    4
    6.3
    49.5
    29.4
    15
    70
    37
    0
    5/3/1914
    123
    33.2
    13.2
    1.5
    21.8
    -1.1
    14.3
    12.7
    -15.9
    2.2
    34.3
    8.4
    8.5
    48.1
    19
    12
    59
    34
    0
    5/3/1960
    124
    30
    9.2
    4.8
    18.1
    -4.1
    15.3
    23.3
    0.4
    3.7
    27.3
    5.1
    2.8
    47.7
    26.7
    2
    50
    24.5
    0
    5/3/1964
    124
    15
    -5.3
    10.8
    24.7
    1.1
    13.9
    28.5
    -1.5
    5
    31.3
    4.1
    7.8
    54
    23.8
    7.3
    54
    43
    0
    5/3/1970
    123
    23.5
    7.3
    24.7
    12.2
    -11.1
    11.2
    23.6
    -4.9
    6.2
    32.7
    1.9
    5
    48.6
    25.3
    12
    56
    28
    1
    5/3/1995
    123
    30.5
    6.1
    5.5
    23
    -4.5
    15.5
    20
    -15.3
    12.5
    37.6
    8
    7.5
    43.8
    16.9
    14.5
    54.5
    26.5
    0
    5/4/1965
    124
    15.1
    -7
    22.6
    14.7
    -13.8
    7.2
    17
    -12.2
    11.1
    27.4
    -2.3
    19.3
    48.4
    25.4
    2.6
    69.3
    38.7
    0
    5/4/1982
    124
    20.7