Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 010626
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
426 PM CHST MON SEP 01 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 1 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 88 11:29 AM 91 1996 87 1 88
2016
MINIMUM 74 1:06 PM 67 1979 76 -2 77
AVERAGE 81 82 -1 83
PRECIPITATION (IN)
TODAY 2.07 3.78 1962 0.53 1.54 0.07
MONTH TO DATE 2.07 0.53 1.54 0.07
SINCE SEP 1 2.07 0.53 1.54 0.07
SINCE JAN 1 57.35 57.16 0.19 47.29
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 16 17 -1 18
MONTH TO DATE 16 17 -1 18
SINCE SEP 1 16 17 -1 18
SINCE JAN 1 4146 4145 1 4116
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 1:00 PM
LOWEST 68 11:00 AM
AVERAGE 81
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2016
MINIMUM TEMPERATURE (F) 76 67 1979
SUNRISE AND SUNSET
SEPTEMBER 1 2025.....SUNRISE 6:09 AM CHST SUNSET 6:32 PM CHST
SEPTEMBER 2 2025.....SUNRISE 6:09 AM CHST SUNSET 6:31 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$