Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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678
CDGM40 PGUM 190713
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
513 PM CHST TUE AUG 19 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 19 2025...
VALID TODAY AS OF 0500 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 10:00 AM 91 1969 87 0 89
1988
MINIMUM 77 2:31 AM 71 1964 77 0 79
AVERAGE 82 82 0 84
PRECIPITATION (IN)
TODAY 0.22 3.85 1985 0.57 -0.35 T
MONTH TO DATE 7.59 10.88 -3.29 8.31
SINCE JUN 1 34.08 29.64 4.44 23.82
SINCE JAN 1 49.81 49.85 -0.04 40.69
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 17 17 0 19
MONTH TO DATE 333 323 10 328
SINCE JUN 1 1367 1417 -50 1405
SINCE JAN 1 3931 3929 2 3886
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 10.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 2:00 AM
LOWEST 75 10:00 AM
AVERAGE 83
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 92 1981
MINIMUM TEMPERATURE (F) 77 71 1960
SUNRISE AND SUNSET
AUGUST 19 2025........SUNRISE 6:09 AM CHST SUNSET 6:40 PM CHST
AUGUST 20 2025........SUNRISE 6:09 AM CHST SUNSET 6:40 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$