Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 130641
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
441 PM CHST SAT SEP 13 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 13 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 87 1:30 PM 91 2016 87 0 86
MINIMUM 75 5:13 AM 61 1958 76 -1 74
AVERAGE 81 82 -1 80
PRECIPITATION (IN)
TODAY 0.20 7.35 1965 0.49 -0.29 3.76
MONTH TO DATE 5.89 6.84 -0.95 14.63
SINCE SEP 1 5.89 6.84 -0.95 14.63
SINCE JAN 1 61.17 63.47 -2.30 61.85
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 15
MONTH TO DATE 218 221 -3 221
SINCE SEP 1 218 221 -3 221
SINCE JAN 1 4347 4349 -2 4319
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SE (120)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 5.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 6:00 AM
LOWEST 70 12:00 PM
AVERAGE 82
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 2004
2012
2017
MINIMUM TEMPERATURE (F) 76 69 1964
SUNRISE AND SUNSET
SEPTEMBER 13 2025.....SUNRISE 6:10 AM CHST SUNSET 6:24 PM CHST
SEPTEMBER 14 2025.....SUNRISE 6:10 AM CHST SUNSET 6:23 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$