Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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854
CDGM40 PGUM 160633
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
433 PM CHST THU OCT 16 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 16 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 84 1:37 PM 89 2010 87 -3 87
2012
2019
MINIMUM 75 2:56 AM 67 1957 77 -2 76
1972
AVERAGE 80 82 -2 82
PRECIPITATION (IN)
TODAY 0.33 7.81 1969 0.41 -0.08 0.00
MONTH TO DATE 11.16 7.16 4.00 7.29
SINCE SEP 1 23.50 22.33 1.17 31.67
SINCE JAN 1 78.78 78.96 -0.18 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 15 17 -2 17
MONTH TO DATE 257 272 -15 271
SINCE SEP 1 746 774 -28 785
SINCE JAN 1 4875 4902 -27 4883
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 77 1:00 PM
AVERAGE 87
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 1951
1999
MINIMUM TEMPERATURE (F) 77 67 1986
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.
$$