209
CDGM40 PGUM 250640
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
440 PM CHST THU SEP 25 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 25 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 87 12:37 PM 91 1995 87 0 87
2013
2017
MINIMUM 77 4:49 AM 62 1984 76 1 76
AVERAGE 82 82 0 82
PRECIPITATION (IN)
TODAY 0.06 2.19 1984 0.49 -0.43 0.00
MONTH TO DATE 10.88 12.77 -1.89 24.14
SINCE SEP 1 10.88 12.77 -1.89 24.14
SINCE JAN 1 66.16 69.40 -3.24 71.36
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 17
MONTH TO DATE 410 425 -15 423
SINCE SEP 1 410 425 -15 423
SINCE JAN 1 4539 4553 -14 4521
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION E (99)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 12:00 AM
LOWEST 70 1:00 PM
AVERAGE 82
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 2020
MINIMUM TEMPERATURE (F) 76 67 1975
1984
SUNRISE AND SUNSET
SEPTEMBER 25 2025.....SUNRISE 6:10 AM CHST SUNSET 6:15 PM CHST
SEPTEMBER 26 2025.....SUNRISE 6:10 AM CHST SUNSET 6:14 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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