Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 150650
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
450 PM CHST WED OCT 15 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 83 11:35 AM 91 2016 87 -4 88
MINIMUM 73 5:31 AM 66 1994 77 -4 76
AVERAGE 78 82 -4 82
PRECIPITATION (IN)
TODAY 4.98 15.48 1953 0.41 4.57 T
MONTH TO DATE 8.41 6.75 1.66 7.29
SINCE SEP 1 20.75 21.92 -1.17 31.67
SINCE JAN 1 76.03 78.55 -2.52 78.89
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 13 17 -4 17
MONTH TO DATE 242 255 -13 254
SINCE SEP 1 731 757 -26 768
SINCE JAN 1 4860 4885 -25 4866
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 8.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 5:00 AM
LOWEST 80 12:00 PM
AVERAGE 87
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 89 2010
2012
2019
MINIMUM TEMPERATURE (F) 77 67 1957
1972
SUNRISE AND SUNSET
OCTOBER 15 2025.......SUNRISE 6:11 AM CHST SUNSET 6:02 PM CHST
OCTOBER 16 2025.......SUNRISE 6:12 AM CHST SUNSET 6:01 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$