345
CDGM40 PGUM 180626
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
426 PM CHST THU DEC 18 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 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 86 1:34 PM 90 2014 87 -1 84
2018
MINIMUM 78 5:40 AM 68 1963 77 1 75
1967
1978
AVERAGE 82 82 0 80
PRECIPITATION (IN)
TODAY 0.06 2.31 1962 0.16 -0.10 0.22
MONTH TO DATE 2.75 3.24 -0.49 2.40
SINCE DEC 1 2.75 3.24 -0.49 2.40
SINCE JAN 1 92.30 96.06 -3.76 98.05
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 17 17 0 15
MONTH TO DATE 300 306 -6 301
SINCE DEC 1 300 306 -6 301
SINCE JAN 1 5951 5990 -39 5937
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 13.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1:00 AM
LOWEST 65 12:00 PM
AVERAGE 78
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 89 2010
2012
2018
MINIMUM TEMPERATURE (F) 77 65 1978
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 6:37 AM CHST SUNSET 5:57 PM CHST
DECEMBER 19 2025......SUNRISE 6:38 AM CHST SUNSET 5:58 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page