405
CDGM40 PGUM 141621
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
221 AM CHST MON SEP 15 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 14 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 87 10:29 AM 90 2004 87 0 86
2012
2017
MINIMUM 77 5:22 AM 69 1964 76 1 76
AVERAGE 82 82 0 81
PRECIPITATION (IN)
YESTERDAY 0.03 3.35 2022 0.49 -0.46 0.14
MONTH TO DATE 6.13 7.33 -1.20 14.77
SINCE SEP 1 6.13 7.33 -1.20 14.77
SINCE JAN 1 61.41 63.96 -2.55 61.99
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 17 17 0 16
MONTH TO DATE 235 238 -3 237
SINCE SEP 1 235 238 -3 237
SINCE JAN 1 4364 4366 -2 4335
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 10.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 1:00 AM
LOWEST 68 2:00 PM
AVERAGE 81
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THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 2018
2020
2023
MINIMUM TEMPERATURE (F) 76 67 1968
SUNRISE AND SUNSET
SEPTEMBER 15 2025.....SUNRISE 6:10 AM CHST SUNSET 6:22 PM CHST
SEPTEMBER 16 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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