Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 090626
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
426 PM CHST THU OCT 09 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 9 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 88 3:01 PM 90 2018 87 1 85
2023
MINIMUM 77 6:18 AM 68 1968 77 0 74
1982
AVERAGE 83 82 1 80
PRECIPITATION (IN)
TODAY 0.07 5.14 1979 0.45 -0.38 2.10
MONTH TO DATE 2.33 4.19 -1.86 6.25
SINCE SEP 1 14.67 19.36 -4.69 30.63
SINCE JAN 1 69.95 75.99 -6.04 77.85
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 18 17 1 15
MONTH TO DATE 146 153 -7 151
SINCE SEP 1 635 655 -20 665
SINCE JAN 1 4764 4783 -19 4763
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NE (40)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 9.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 7:00 AM
LOWEST 66 3:00 PM
AVERAGE 78
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 1999
2007
MINIMUM TEMPERATURE (F) 77 68 1966
1982
SUNRISE AND SUNSET
OCTOBER 9 2025.......SUNRISE 6:11 AM CHST SUNSET 6:05 PM CHST
OCTOBER 10 2025.......SUNRISE 6:11 AM CHST SUNSET 6:05 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$