071
CDGM40 PGUM 161615
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
215 AM CHST WED SEP 17 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 16 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 11:18 AM 91 2016 87 -1 81
MINIMUM 72 5:09 PM 68 1957 76 -4 76
1974
1984
AVERAGE 79 82 -3 79
PRECIPITATION (IN)
YESTERDAY 1.11 5.62 2024 0.50 0.61 5.62
MONTH TO DATE 7.99 8.33 -0.34 21.02
SINCE SEP 1 7.99 8.33 -0.34 21.02
SINCE JAN 1 63.27 64.96 -1.69 68.24
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 14 17 -3 14
MONTH TO DATE 264 272 -8 267
SINCE SEP 1 264 272 -8 267
SINCE JAN 1 4393 4400 -7 4365
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SE (120)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 6.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 3:00 AM
LOWEST 74 9:00 AM
AVERAGE 85
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 1952
1957
2018
MINIMUM TEMPERATURE (F) 76 69 1957
1969
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 6:10 AM CHST SUNSET 6:21 PM CHST
SEPTEMBER 18 2025.....SUNRISE 6:10 AM CHST SUNSET 6:20 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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