310
CXUS53 KGRR 020840
CLMMKG

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
440 AM EDT THU OCT 02 2025

...................................

...THE MUSKEGON CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1896 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             95   09/06/1954
                       09/01/1953
 LOW              27   09/28/1991
                       09/27/1989
HIGHEST           87   09/19         85       2       90  09/14
                                                          09/16
LOWEST            38   09/08         35       3       42  09/08
AVG. MAXIMUM    76.4               73.4     3.0     79.3
AVG. MINIMUM    52.9               53.5    -0.6     54.7
MEAN            64.7               63.5     1.2     67.0
DAYS MAX >= 90     0                0.2    -0.2        2
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.2    -0.2        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       13.55   1986
 MINIMUM        0.17   1979
TOTALS          0.85               3.26   -2.41     4.89
DAILY AVG.      0.03               0.11   -0.08     0.16
DAYS >= .01        7                9.4    -2.4        4
DAYS >= .10        4                5.8    -1.8        2
DAYS >= .50        0                2.3    -2.3        1
DAYS >= 1.00       0                0.7    -0.7        1
GREATEST
 24 HR. TOTAL   0.26   09/03 TO 09/03

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   1994
 SNOW DEPTH        0   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE      0                0.0     0.0        0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM

DEGREE DAYS
HEATING TOTAL     62                116     -54       37
 SINCE 7/1       102                139     -37       MM
COOLING TOTAL     59                 70     -11      106
 SINCE 1/1       736                643      93       MM

FREEZE DATES
RECORD
 EARLIEST     09/22/1976
 LATEST       06/22/1992
EARLIEST                        MM
LATEST                          05/09
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.9
RESULTANT WIND SPEED/DIRECTION   1/230
HIGHEST WIND SPEED/DIRECTION    29/230    DATE  09/05
HIGHEST GUST SPEED/DIRECTION    47/220    DATE  09/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.39
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      3
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

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