Michigan State Climatologist’s Office

Number of days with maximum Temperature of 90 F or above (Weibull)

Climate Office







                                                              BIG BAY 3 SE                                                          
       DIVISION: 1                                          STATION #0770                                         DATE OF RUN
       COUNTY: MARQUETTE                   PERIOD ANALYSIS FOR 1981 -1998  ( 16 YEARS)                             11/17/04 
                                            NUMBER OF DAYS WITH MAXIMUM TEMPERATURE => 90 F                                 

           YEAR             JAN     FEB     MAR     APR     MAY     JUN     JUL     AUG     SEP     OCT     NOV     DEC    ANNUAL        

           1981               0       0       0       0       0       0       4       0       0       0       0       0         4
           1982               0       0       0       0       0       0       2       0       0       0       0       0         2
           1983               0       0       0       0       0       5       5       2       1       0       0       0        13
           1984               0       0       0       0       0       2       0       1       0       0       0       0         3

           1986               0       0       0       0       3       2       3       1       0       0       0       0         9
           1987               0       0       0       1       1       2       3       0       0       0       0       0         7
           1988               0       0       0       0       0      10       8       3       0       0       0       0        21
           1989               0       0       0       0       0       0       1       2       0       0       0       0         3
           1990               0       0       0       1       0       1       2       1       0       0       0       0         5
           1991               0       0       0       0       2       2       2       8       0       0       0       0        14
           1992               0       0       0       0       1       1       0       2       0       0       0       0         4

           1994               0       0       0       0       0       0       0       0       0       0       0       0         0
           1995               0       0       0       0       0       6       1       0       0       0       0       0         7
           1996               0       0       0       0       0       1       0       0       0       0       0       0         1
           1997               0       0       0       0       0       2       0       0       0       0       0       0         2
           1998               0       0       0       0       0       1       2       0       2       0       0       0         5

           NON-ZERO           0       0       0       2       4      12      11       8       2       0       0       0        15          
           ZEROES            16      16      16      14      12       4       5       8      14      16      16      16         1          
           PROB OF ZERO    1.00    1.00    1.00     .88     .75     .25     .31     .50     .88    1.00    1.00    1.00       .06          
             NOTE:  STATISTICS ARE COMPUTED ON THE NON-ZERO VALUES                                                                         
           NUMBER YEARS      16      16      16      16      16      16      16      16      16      16      16      16        16          
           MEAN              .0      .0      .0     1.0     1.8     2.9     3.0     2.5     1.5      .0      .0      .0       6.7          
           VARIANCE          .0      .0      .0      .0      .9     7.5     4.2     5.4      .5      .0      .0      .0      30.5          
           STND DEV          .0      .0      .0      .0     1.0     2.7     2.0     2.3      .7      .0      .0      .0       5.5          
           SKEW              .0      .0      .0      .0      .5     1.7     1.4     1.9      .0      .0      .0      .0       1.3          
           KURTOSIS          .0      .0      .0      .0     1.6     4.7     4.2     5.2     1.0      .0      .0      .0       4.0          


          NOTE:   A MISSING OR INCOMPLETE VALUE, INDICATED BY THE FIELD BEING FILLED WITH 9s, IS NOT INCLUDED IN THE ANALYSIS.






                                                              BIG BAY 3 SE                                                          
       DIVISION: 1                                          STATION #0770                                         DATE OF RUN
       COUNTY: MARQUETTE                   PERIOD ANALYSIS FOR 1981 -1998  ( 16 YEARS)                             11/17/04 
                                       NUMBER OF DAYS WITH MAXIMUM TEMPERATURE => 90 F STATISTICS                      

        PARAMETER        JAN     FEB     MAR     APR     MAY     JUN     JUL     AUG     SEP     OCT     NOV     DEC    ANNUAL        
        NUMBER YEARS      16      16      16      16      16      16      16      16      16      16      16      16        16          
        MEAN              .0      .0      .0     1.0     1.8     2.9     3.0     2.5     1.5      .0      .0      .0       6.7          
        VARIANCE          .0      .0      .0      .0      .9     7.5     4.2     5.4      .5      .0      .0      .0      30.5          
        STND DEV          .0      .0      .0      .0     1.0     2.7     2.0     2.3      .7      .0      .0      .0       5.5          
        SKEW              .0      .0      .0      .0      .5     1.7     1.4     1.9      .0      .0      .0      .0       1.3          
        KURTOSIS          .0      .0      .0      .0     1.6     4.7     4.2     5.2     1.0      .0      .0      .0       4.0          

        SIGMA           .000    .000    .000 999.000 999.000   2.746   3.010   2.330 999.000    .000    .000    .000     8.113          
        ETA             .000    .000    .000 999.000 999.000   1.000   1.360   1.000 999.000    .000    .000    .000     1.360          
        MU              .000    .000    .000 999.000 999.000    .171    .244    .170 999.000    .000    .000    .000     -.763          
        SCALE FACTOR   1.000   1.000   1.000   1.000   1.000   1.000   1.000   1.000   1.000   1.000   1.000   1.000     1.000          
        TRANS FACTOR    .000    .000    .000    .000    .000    .000    .000    .000    .000    .000    .000    .000      .000          

        PROB OF ZERO    1.00    1.00    1.00     .88     .75     .25     .31     .50     .88    1.00    1.00    1.00       .06          
           LEVELS                                           PROBABILITY PERCENTILE VALUES

        01                 0       0       0       0       0       0       0       0       0       0       0       0         0               
        05                 0       0       0       0       0       0       0       0       0       0       0       0         0               
        10                 0       0       0       0       0       0       0       0       0       0       0       0         0               
        20                 0       0       0       0       0       0       0       0       0       0       0       0         1               
        25                 0       0       0       0       0       0       0       0       0       0       0       0         2               
        30                 0       0       0       0       0       0       0       0       0       0       0       0         3               
        40                 0       0       0       0       0       1       1       0       0       0       0       0         4               
        50                 0       0       0       0       0       1       2       0       0       0       0       0         5               
        60                 0       0       0       0       0       2       2       1       0       0       0       0         6               
        70                 0       0       0       0       0       3       3       1       0       0       0       0         8               
        75                 0       0       0       0       0       3       3       2       0       0       0       0         9               
        80                 0       0       0       0       1       4       4       2       0       0       0       0        10               
        90                 0       0       0       0       1       6       5       4       0       0       0       0        14               
        95                 0       0       0       1       2       8       6       6       1       0       0       0        17               
        99                 0       0       0       1       3      12       9       9       2       0       0       0        24