238
CDGM40 PGUM 120118
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
1118 AM CHST FRI SEP 12 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 10 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 88 1:11 PM 90 1957 87 1 87
2016
2021
MINIMUM 77 2:22 AM 68 1983 76 1 75
AVERAGE 83 82 1 81
PRECIPITATION (IN)
YESTERDAY 0.04 9.40 2018 0.53 -0.49 1.25
MONTH TO DATE 5.18 5.34 -0.16 3.35
SINCE SEP 1 5.18 5.34 -0.16 3.35
SINCE JAN 1 60.46 61.97 -1.51 50.57
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 18 17 1 16
MONTH TO DATE 167 170 -3 175
SINCE SEP 1 167 170 -3 175
SINCE JAN 1 4296 4298 -2 4273
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (80)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 7.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 AM
LOWEST 65 2:00 PM
AVERAGE 79
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 93 2016
MINIMUM TEMPERATURE (F) 76 68 1983
1984
1985
SUNRISE AND SUNSET
SEPTEMBER 11 2025.....SUNRISE 6:10 AM CHST SUNSET 6:25 PM CHST
SEPTEMBER 12 2025.....SUNRISE 6:10 AM CHST SUNSET 6:24 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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