475
CDGM40 PGUM 170719
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
519 PM CHST THU SEP 17 2026
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
VALID TODAY AS OF 0400 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 89 12:50 PM 91 1969 87 2 85
1984
2018
MINIMUM 80 6:29 AM 70 1972 76 4 73
AVERAGE 85 82 3 79
PRECIPITATION (IN)
TODAY 0.26 4.70 1972 0.50 -0.24 0.89
MONTH TO DATE 10.00 8.83 1.17 8.88
SINCE SEP 1 10.00 8.83 1.17 8.88
SINCE JAN 1 102.03 65.46 36.57 64.16
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 20 17 3 14
MONTH TO DATE 290 289 1 278
SINCE SEP 1 290 289 1 278
SINCE JAN 1 4284 4417 -133 4407
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 9.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 4:00 AM
LOWEST 77 3:00 PM
AVERAGE 86
......................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 93 2014
MINIMUM TEMPERATURE (F) 76 73 1956
1960
1966
SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE 6:10 AM CHST SUNSET 6:21 PM CHST
SEPTEMBER 18 2026.....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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