908
CDGM40 PGUM 290628
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
428 PM CHST MON SEP 29 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 29 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 3:56 PM 90 1951 87 -2 88
1992
2009
MINIMUM 76 5:54 AM 68 1967 76 0 78
1968
1976
AVERAGE 81 82 -1 83
PRECIPITATION (IN)
TODAY 0.13 2.95 1962 0.48 -0.35 0.02
MONTH TO DATE 12.13 14.70 -2.57 24.37
SINCE SEP 1 12.13 14.70 -2.57 24.37
SINCE JAN 1 67.41 71.33 -3.92 71.59
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 16 17 -1 18
MONTH TO DATE 474 493 -19 495
SINCE SEP 1 474 493 -19 495
SINCE JAN 1 4603 4621 -18 4593
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (100)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 6.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 12:00 AM
LOWEST 74 9:00 AM
AVERAGE 84
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 1997
2021
MINIMUM TEMPERATURE (F) 76 69 1967
1968
1989
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 6:10 AM CHST SUNSET 6:12 PM CHST
SEPTEMBER 30 2025.....SUNRISE 6:10 AM CHST SUNSET 6:11 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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