Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 151613
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
213 AM CHST THU OCT 16 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 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)
YESTERDAY 7.40 15.48 1953 0.41 6.99 T
MONTH TO DATE 10.83 6.75 4.08 7.29
SINCE SEP 1 23.17 21.92 1.25 31.67
SINCE JAN 1 78.45 78.55 -0.10 78.89
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 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 5 RESULTANT WIND DIRECTION E (100)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 9:00 PM
LOWEST 80 12:00 PM
AVERAGE 89
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 89 2010
2012
2019
MINIMUM TEMPERATURE (F) 77 67 1957
1972
SUNRISE AND SUNSET
OCTOBER 16 2025.......SUNRISE 6:12 AM CHST SUNSET 6:01 PM CHST
OCTOBER 17 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.
$$