321
CDGM40 PGUM 220625
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
425 PM CHST MON SEP 22 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 22 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 85 12:41 PM 91 2017 87 -2 89
MINIMUM 79 6:47 AM 69 1986 76 3 78
AVERAGE 82 82 0 84
PRECIPITATION (IN)
TODAY 0.04 2.82 1959 0.49 -0.45 0.12
MONTH TO DATE 9.58 11.29 -1.71 22.34
SINCE SEP 1 9.58 11.29 -1.71 22.34
SINCE JAN 1 64.86 67.92 -3.06 69.56
DEGREE DAYS
HEATING
TODAY 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
TODAY 17 17 0 19
MONTH TO DATE 362 374 -12 376
SINCE SEP 1 362 374 -12 376
SINCE JAN 1 4491 4502 -11 4474
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 7.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 4:00 AM
LOWEST 77 10:00 AM
AVERAGE 83
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 2017
MINIMUM TEMPERATURE (F) 76 67 1982
SUNRISE AND SUNSET
SEPTEMBER 22 2025.....SUNRISE 6:10 AM CHST SUNSET 6:17 PM CHST
SEPTEMBER 23 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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