865
CDGM40 PGUM 180703
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
503 PM CHST SAT OCT 18 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 18 2025...
VALID TODAY AS OF 0500 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 10:55 AM 90 2005 87 -1 83
2016
2018
MINIMUM 74 2:37 PM 64 1987 77 -3 75
AVERAGE 80 82 -2 79
PRECIPITATION (IN)
TODAY 1.15 5.43 2003 0.40 0.75 1.04
MONTH TO DATE 12.86 7.97 4.89 9.60
SINCE SEP 1 25.20 23.14 2.06 33.98
SINCE JAN 1 80.48 79.77 0.71 81.20
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 15 17 -2 14
MONTH TO DATE 290 306 -16 299
SINCE SEP 1 779 808 -29 813
SINCE JAN 1 4908 4936 -28 4911
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 10.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 7:00 AM
LOWEST 80 11:00 AM
AVERAGE 85
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 2000
2016
MINIMUM TEMPERATURE (F) 77 65 1994
SUNRISE AND SUNSET
OCTOBER 18 2025.......SUNRISE 6:12 AM CHST SUNSET 6:00 PM CHST
OCTOBER 19 2025.......SUNRISE 6:12 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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