Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 120653
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
453 PM CHST SUN OCT 12 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 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 12:32 PM 91 2018 87 2 86
MINIMUM 78 12:14 AM 67 1959 77 1 75
1980
AVERAGE 84 82 2 81
PRECIPITATION (IN)
TODAY T 2.88 1963 0.43 -0.43 0.46
MONTH TO DATE 2.65 5.49 -2.84 7.28
SINCE SEP 1 14.99 20.66 -5.67 31.66
SINCE JAN 1 70.27 77.29 -7.02 78.88
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 19 17 2 16
MONTH TO DATE 196 204 -8 201
SINCE SEP 1 685 706 -21 715
SINCE JAN 1 4814 4834 -20 4813
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION NE (60)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 8.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 66 11:00 AM
AVERAGE 78
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 1953
1997
2018
MINIMUM TEMPERATURE (F) 77 66 1991
SUNRISE AND SUNSET
OCTOBER 12 2025.......SUNRISE 6:11 AM CHST SUNSET 6:03 PM CHST
OCTOBER 13 2025.......SUNRISE 6:11 AM CHST SUNSET 6:03 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$