436
CDGM40 PGUM 160830
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
630 PM CHST TUE SEP 16 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 16 2025...
VALID TODAY AS OF 0600 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 86 11:18 AM 91 2016 87 -1 81
MINIMUM 73 4:27 PM 68 1957 76 -3 76
1974
1984
AVERAGE 80 82 -2 79
PRECIPITATION (IN)
TODAY 0.72 5.62 2024 0.50 0.22 5.62
MONTH TO DATE 7.60 8.33 -0.73 21.02
SINCE SEP 1 7.60 8.33 -0.73 21.02
SINCE JAN 1 62.88 64.96 -2.08 68.24
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 14
MONTH TO DATE 265 272 -7 267
SINCE SEP 1 265 272 -7 267
SINCE JAN 1 4394 4400 -6 4365
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 6.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 3:00 AM
LOWEST 74 9:00 AM
AVERAGE 85
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 1952
1957
2018
MINIMUM TEMPERATURE (F) 76 69 1957
1969
SUNRISE AND SUNSET
SEPTEMBER 16 2025.....SUNRISE 6:10 AM CHST SUNSET 6:21 PM CHST
SEPTEMBER 17 2025.....SUNRISE 6:10 AM CHST SUNSET 6:21 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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