506
CDGM40 PGUM 120639
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
439 PM CHST FRI SEP 12 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 12 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 89 1:57 PM 91 2013 87 2 84
MINIMUM 76 4:17 AM 67 1984 76 0 77
AVERAGE 83 82 1 81
PRECIPITATION (IN)
TODAY 0.01 4.26 1967 0.50 -0.49 1.51
MONTH TO DATE 5.69 6.35 -0.66 10.87
SINCE SEP 1 5.69 6.35 -0.66 10.87
SINCE JAN 1 60.97 62.98 -2.01 58.09
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 18 17 1 16
MONTH TO DATE 202 204 -2 206
SINCE SEP 1 202 204 -2 206
SINCE JAN 1 4331 4332 -1 4304
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 4.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 1:00 AM
LOWEST 65 3:00 PM
AVERAGE 81
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2016
MINIMUM TEMPERATURE (F) 76 61 1958
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 6:10 AM CHST SUNSET 6:24 PM CHST
SEPTEMBER 13 2025.....SUNRISE 6:10 AM CHST SUNSET 6:24 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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