702
CDGM40 PGUM 171604
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
204 AM CHST FRI SEP 18 2026
...............................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
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)
YESTERDAY
MAXIMUM 89 12:50 PM 91 1969 87 2 85
1984
2018
MINIMUM 78 8:58 PM 70 1972 76 2 73
AVERAGE 84 82 2 79
PRECIPITATION (IN)
YESTERDAY 0.38 4.70 1972 0.50 -0.12 0.89
MONTH TO DATE 10.12 8.83 1.29 8.88
SINCE SEP 1 10.12 8.83 1.29 8.88
SINCE JAN 1 102.15 65.46 36.69 64.16
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 19 17 2 14
MONTH TO DATE 289 289 0 278
SINCE SEP 1 289 289 0 278
SINCE JAN 1 4283 4417 -134 4407
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 8.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 4:00 AM
LOWEST 77 3:00 PM
AVERAGE 86
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THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 93 2014
MINIMUM TEMPERATURE (F) 76 73 1956
1960
1966
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:10 AM CHST SUNSET 6:20 PM CHST
SEPTEMBER 19 2026.....SUNRISE 6:10 AM CHST SUNSET 6:19 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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