Climatological Report (Annual)
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800
CXUS53 KGRR 060539 CCA
CLAMKG

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
125 PM EST MON JAN 04 2021

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

...THE MUSKEGON CLIMATE SUMMARY FOR THE YEAR OF 2020...

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             99   07/06/2012
                       08/03/1964
                       07/30/1913
 LOW             -30   02/11/1899
HIGHEST           97   06/09         MM      MM       90  07/06
LOWEST             9   02/15         MM      MM      -12  01/21
AVG. MAXIMUM    59.0               56.5     2.5     56.3
AVG. MINIMUM    42.5               40.6     1.9     40.2
MEAN            50.7               48.6     2.1     48.2
DAYS MAX >= 90    14                1.8    12.2        1
DAYS MAX <= 32    15               46.1   -31.1       47
DAYS MIN <= 32    83              122.9   -39.9      127
DAYS MIN <= 0      0                1.9    -1.9        3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       47.97   2019
 MINIMUM          MM   MM
TOTALS         36.30              33.49    2.81    47.97
DAILY AVG.      0.10               0.09    0.01     0.13
DAYS >= .01       20              141.2  -121.2      164
DAYS >= .10        9               74.1   -65.1       88
DAYS >= .50        3               19.9   -16.9       30
DAYS >= 1.00       1                5.5    -4.5       11
GREATEST
 24 HR. TOTAL   3.78   04/28 TO 04/29

SNOWFALL (INCHES)
RECORDS
 TOTAL         182.2   1962
 24 HR TOTAL      MM
 SNOW DEPTH       MM   MM
TOTALS          39.6               93.7   -54.1     84.8
SINCE 7/1       11.0               35.1   -24.1       MM
SNOWDEPTH AVG.     2                                   1
DAYS >= TRACE     16               51.5   -35.5       80
DAYS >= 1.0        5               27.9   -22.9       27
GREATEST
 SNOW DEPTH        8   02/15                          15  02/01
                       02/15
                                                          01/31
                                                          01/30
 24 HR TOTAL     1.2

DEGREE DAYS
HEATING TOTAL   5948               6559    -611     6641
 SINCE 7/1      2109               2447    -338       MM
COOLING TOTAL    832                565     267      640
 SINCE 1/1       832                566     266      640

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

WIND (MPH)
AVERAGE WIND SPEED              9.3
RESULTANT WIND SPEED/DIRECTION   2/240
HIGHEST WIND SPEED/DIRECTION    39/200    DATE  09/06
HIGHEST GUST SPEED/DIRECTION    70/220    DATE  09/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.63
NUMBER OF DAYS FAIR           MM
NUMBER OF DAYS PC             MM
NUMBER OF DAYS CLOUDY         MM

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             22     MIXED PRECIP               0
HEAVY RAIN               21     RAIN                      38
LIGHT RAIN              125     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                      13
LIGHT SNOW               63     SLEET                      0
FOG                     135     FOG W/VIS <= 1/4 MILE     11
HAZE                     39

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

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