Climatological Report (Seasonal)
Issued by NWS

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CXUS53 KGRR 011652
CLSMKG

WRKCLSMKG 000
TTAA00 GRR 011636

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
1124 AM EST MON MAR 01 2021

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

...THE MUSKEGON CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2020 TO 2/28/2021...

CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1896 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             67   02/11/1999
 LOW             -30   02/11/1899
HIGHEST           54   12/10         52       2       MM
                       12/23
LOWEST            -9   02/17                 -8       MM
AVG. MAXIMUM    33.8               33.0     0.8       MM
AVG. MINIMUM    22.4               22.2     0.2       MM
MEAN            28.1               27.6     0.5       MM
DAYS MAX >= 90     0                0.0     0.0       MM
DAYS MAX <= 32    34               40.0    -6.0       MM
DAYS MIN <= 32    77               75.1     1.9       MM
DAYS MIN <= 0      2                1.8     0.2       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       13.42   2009
 MINIMUM        1.38   2003
TOTALS          5.71               6.41   -0.70       MM
DAILY AVG.      0.06               0.07   -0.01       MM
DAYS >= .01       44               43.6     0.4       MM
DAYS >= .10       17               18.3    -1.3       MM
DAYS >= .50        2                2.5    -0.5       MM
DAYS >= 1.00       1                0.5     0.5       MM
GREATEST
 24 HR. TOTAL     MM

SNOWFALL (INCHES)
RECORDS
 TOTAL         140.6   1977
 24 HR TOTAL    22.0   01/10/1982 TO 01/10/1982
 SNOW DEPTH       34   12/20/1963
TOTALS          40.4               76.2   -35.8       MM
SINCE 7/1       41.6               82.4   -40.8       MM
SNOWDEPTH AVG.     4                                  MM
DAYS >= TRACE     48               39.0     9.0       MM
DAYS >= 1.0       16               23.0    -7.0       MM
GREATEST
 SNOW DEPTH       16   02/22                          MM
 24 HR TOTAL     6.2   02/04 TO 02/05

DEGREE DAYS
HEATING TOTAL   3279               3364     -85       MM
 SINCE 7/1      4413               4733    -320       MM
COOLING TOTAL      0                  0       0       MM
 SINCE 1/1         0                  0       0       MM

FREEZE DATES
RECORD
 EARLIEST     09/22/1976
 LATEST       06/22/1992
EARLIEST                        10/18
LATEST                          05/13
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
RESULTANT WIND SPEED/DIRECTION   2/280
HIGHEST WIND SPEED/DIRECTION    36/220    DATE  12/24
HIGHEST GUST SPEED/DIRECTION    53/210    DATE  12/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.82
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY         66

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                3     SNOW                      13
LIGHT SNOW               44     SLEET                      0
FOG                      46     FOG W/VIS <= 1/4 MILE      8
HAZE                     43

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

$$



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