647
CDUS43 KGRR 210638
CLIMKG
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
238 AM EDT SUN SEP 21 2025
...............................
..THE MUSKEGON CLIMATE SUMMARY FOR SEPTEMBER 20 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1896 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 81 4:17 PM 90 2017 72 9 83
MINIMUM 59 5:59 AM 33 1956 52 7 61
AVERAGE 70 62 8 72
PRECIPITATION (IN)
YESTERDAY 0.08 1.88 1924 0.12 -0.04 T
MONTH TO DATE 0.49 2.15 -1.66 0.08
SINCE SEP 1 0.49 2.15 -1.66 0.08
SINCE JAN 1 19.48 24.83 -5.35 23.57
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 5 -5 0
MONTH TO DATE 60 53 7 29
SINCE SEP 1 60 53 7 29
SINCE JUL 1 100 75 25 43
COOLING
YESTERDAY 5 2 3 7
MONTH TO DATE 41 58 -17 77
SINCE SEP 1 41 58 -17 77
SINCE JAN 1 718 631 87 724
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SE (130)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 9.4
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 50 2:00 PM
AVERAGE 72
......................................................
THE MUSKEGON CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 86 1941
2017
MINIMUM TEMPERATURE (F) 52 31 1962
SUNRISE AND SUNSET
SEPTEMBER 21 2025.....SUNRISE 7:31 AM EDT SUNSET 7:43 PM EDT
SEPTEMBER 22 2025.....SUNRISE 7:33 AM EDT SUNSET 7:42 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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