Climatological Report (Monthly)
Issued by NWS

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976
CXUS53 KGRR 012326
CLMMKG

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
726 PM EDT TUE JUN 01 2021

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

...THE MUSKEGON CLIMATE SUMMARY FOR THE MONTH OF MAY 2021...

CLIMATE NORMAL PERIOD: 1991 TO 2020
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             96   05/29/2018
 LOW              22   05/10/1947
HIGHEST           85   05/20         83       2       90  05/26
                       05/21
LOWEST            29   05/13         31      -2       23  05/09
AVG. MAXIMUM    67.6               68.4    -0.8     66.1
AVG. MINIMUM    45.1               47.5    -2.4     47.2
MEAN            56.4               57.9    -1.5     56.6
DAYS MAX >= 90     0                0.2    -0.2       MM
DAYS MAX <= 32     0                0.0     0.0       MM
DAYS MIN <= 32     5                1.4     3.6       MM
DAYS MIN <= 0      0                0.0     0.0       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.59   2004
 MINIMUM        0.23   1936
TOTALS          2.05               3.38   -1.33     5.70
DAILY AVG.      0.07               0.11   -0.04     0.18
DAYS >= .01       11               11.3    -0.3       MM
DAYS >= .10        7                6.8     0.2       MM
DAYS >= .50        1                2.2    -1.2       MM
DAYS >= 1.00       0                0.8    -0.8       MM
GREATEST
 24 HR. TOTAL   0.82   05/25 TO 05/26

SNOWFALL (INCHES)
RECORDS
 TOTAL           5.0   1923
 24 HR TOTAL     5.0   05/09/1923 TO 05/09/1923
 SNOW DEPTH        2   05/10/1902
TOTALS           0.0                0.0     0.0        T
SINCE 7/1       41.8               87.2   -45.4       MM
SNOWDEPTH AVG.     0                                  MM
DAYS >= TRACE      0                0.0     0.0       MM
DAYS >= 1.0        0                0.0     0.0       MM
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    309                252      57      300
 SINCE 7/1      5980               6247    -267       MM
COOLING TOTAL     47                 33      14       49
 SINCE 1/1        50                 36      14       MM

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

WIND (MPH)
AVERAGE WIND SPEED              8.6
RESULTANT WIND SPEED/DIRECTION   2/230
HIGHEST WIND SPEED/DIRECTION    29/210    DATE  05/01
                                29/200          05/02
HIGHEST GUST SPEED/DIRECTION    45/200    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.58
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      2
HAZE                      5

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

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