855
CDGM40 PGUM 221632
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
232 AM CHST TUE SEP 23 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 22 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1945 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 85 12:41 PM 91 2017 87 -2 89
MINIMUM 75 10:19 PM 69 1986 76 -1 78
AVERAGE 80 82 -2 84
PRECIPITATION (IN)
YESTERDAY 0.18 2.82 1959 0.49 -0.31 0.12
MONTH TO DATE 9.72 11.29 -1.57 22.34
SINCE SEP 1 9.72 11.29 -1.57 22.34
SINCE JAN 1 65.00 67.92 -2.92 69.56
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 15 17 -2 19
MONTH TO DATE 360 374 -14 376
SINCE SEP 1 360 374 -14 376
SINCE JAN 1 4489 4502 -13 4474
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WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (80)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 7.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 10:00 PM
LOWEST 77 10:00 AM
AVERAGE 84
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THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 2017
MINIMUM TEMPERATURE (F) 76 67 1982
SUNRISE AND SUNSET
SEPTEMBER 23 2025.....SUNRISE 6:10 AM CHST SUNSET 6:16 PM CHST
SEPTEMBER 24 2025.....SUNRISE 6:10 AM CHST SUNSET 6:16 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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