111
CDGM40 PGUM 152252
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
852 AM CHST TUE SEP 16 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 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 86 10:03 AM 90 2018 87 -1 85
2020
2023
MINIMUM 74 7:52 PM 67 1968 76 -2 76
AVERAGE 80 82 -2 81
PRECIPITATION (IN)
YESTERDAY 0.75 8.20 2019 0.50 0.25 0.63
MONTH TO DATE 6.88 7.83 -0.95 15.40
SINCE SEP 1 6.88 7.83 -0.95 15.40
SINCE JAN 1 62.16 64.46 -2.30 62.62
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 15 17 -2 16
MONTH TO DATE 250 255 -5 253
SINCE SEP 1 250 255 -5 253
SINCE JAN 1 4379 4383 -4 4351
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 7.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 2:00 AM
LOWEST 72 10:00 AM
AVERAGE 83
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2016
MINIMUM TEMPERATURE (F) 76 68 1957
1974
1984
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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