347
CDGM40 PGUM 200630
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
430 PM CHST SAT DEC 20 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 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 84 12:52 PM 90 2014 87 -3 87
MINIMUM 77 4:04 AM 66 1963 77 0 75
AVERAGE 81 82 -1 81
PRECIPITATION (IN)
TODAY 0.29 1.63 1990 0.14 0.15 0.40
MONTH TO DATE 3.08 3.53 -0.45 3.68
SINCE DEC 1 3.08 3.53 -0.45 3.68
SINCE JAN 1 92.63 96.35 -3.72 99.33
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 16 17 -1 16
MONTH TO DATE 333 340 -7 332
SINCE DEC 1 333 340 -7 332
SINCE JAN 1 5984 6024 -40 5968
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 12.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 7:00 AM
LOWEST 77 1:00 PM
AVERAGE 84
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THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 89 2014
MINIMUM TEMPERATURE (F) 77 61 1967
SUNRISE AND SUNSET
DECEMBER 20 2025......SUNRISE 6:38 AM CHST SUNSET 5:58 PM CHST
DECEMBER 21 2025......SUNRISE 6:39 AM CHST SUNSET 5:59 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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