665
CDGM40 PGUM 211612
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
212 AM CHST MON SEP 22 2025
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 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 85 11:41 AM 91 2016 87 -2 89
MINIMUM 75 3:29 AM 69 1983 76 -1 78
1990
AVERAGE 80 82 -2 84
PRECIPITATION (IN)
YESTERDAY 0.15 3.16 1995 0.49 -0.34 0.09
MONTH TO DATE 9.54 10.80 -1.26 22.22
SINCE SEP 1 9.54 10.80 -1.26 22.22
SINCE JAN 1 64.82 67.43 -2.61 69.44
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 19
MONTH TO DATE 345 357 -12 357
SINCE SEP 1 345 357 -12 357
SINCE JAN 1 4474 4485 -11 4455
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WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 6:00 AM
LOWEST 70 12:00 PM
AVERAGE 82
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THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2017
MINIMUM TEMPERATURE (F) 76 69 1986
SUNRISE AND SUNSET
SEPTEMBER 22 2025.....SUNRISE 6:10 AM CHST SUNSET 6:17 PM CHST
SEPTEMBER 23 2025.....SUNRISE 6:10 AM CHST SUNSET 6:16 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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