505
CDGM40 PGUM 200700
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
500 PM CHST SUN SEP 20 2026
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 86 1:58 PM 91 1988 87 -1 88
1989
1995
MINIMUM 77 1:04 AM 73 1964 76 1 77
AVERAGE 82 82 0 83
PRECIPITATION (IN)
TODAY 2.90 8.21 2013 0.49 2.41 0.14
MONTH TO DATE 14.30 10.31 3.99 9.39
SINCE SEP 1 14.30 10.31 3.99 9.39
SINCE JAN 1 106.33 66.94 39.39 64.67
DEGREE DAYS
HEATING
TODAY 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
TODAY 17 17 0 18
MONTH TO DATE 342 340 2 330
SINCE SEP 1 342 340 2 330
SINCE JAN 1 4336 4468 -132 4459
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (99)
AVERAGE WIND SPEED 3.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 2:00 AM
LOWEST 77 10:00 AM
AVERAGE 87
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 92 1985
MINIMUM TEMPERATURE (F) 76 72 1966
1984
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 6:10 AM CHST SUNSET 6:19 PM CHST
SEPTEMBER 21 2026.....SUNRISE 6:10 AM CHST SUNSET 6:18 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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