Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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877
CDGM40 PGUM 131646
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
246 AM CHST TUE OCT 14 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 13 2025...
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)
YESTERDAY
MAXIMUM 87 10:50 AM 90 1953 87 0 89
1997
2018
MINIMUM 77 6:00 AM 66 1991 77 0 76
AVERAGE 82 82 0 83
PRECIPITATION (IN)
YESTERDAY 0.33 2.65 1995 0.43 -0.10 T
MONTH TO DATE 2.98 5.92 -2.94 7.28
SINCE SEP 1 15.32 21.09 -5.77 31.66
SINCE JAN 1 70.60 77.72 -7.12 78.88
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 17 17 0 18
MONTH TO DATE 213 221 -8 219
SINCE SEP 1 702 723 -21 733
SINCE JAN 1 4831 4851 -20 4831
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 6:00 AM
LOWEST 70 12:00 PM
AVERAGE 80
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2015
2016
MINIMUM TEMPERATURE (F) 77 66 1991
SUNRISE AND SUNSET
OCTOBER 14 2025.......SUNRISE 6:11 AM CHST SUNSET 6:02 PM CHST
OCTOBER 15 2025.......SUNRISE 6:11 AM CHST SUNSET 6:02 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$