Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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582
CDGM40 PGUM 291611
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
211 AM CHST WED JUL 30 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 29 2025...
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)
YESTERDAY
MAXIMUM 90 1:03 PM 92 2013 87 3 88
MINIMUM 77 3:46 AM 72 1982 77 0 76
1999
AVERAGE 84 82 2 82
PRECIPITATION (IN)
YESTERDAY 0.01 3.34 1999 0.47 -0.46 T
MONTH TO DATE 12.12 11.30 0.82 7.17
SINCE JUN 1 25.62 17.81 7.81 15.17
SINCE JAN 1 41.35 38.02 3.33 32.04
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 19 17 2 17
MONTH TO DATE 490 509 -19 510
SINCE JUN 1 999 1061 -62 1041
SINCE JAN 1 3563 3573 -10 3522
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 6.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 2:00 AM
LOWEST 68 1:00 PM
AVERAGE 81
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 92 1984
2013
MINIMUM TEMPERATURE (F) 77 71 1956
1964
SUNRISE AND SUNSET
JULY 30 2025..........SUNRISE 6:05 AM CHST SUNSET 6:49 PM CHST
JULY 31 2025..........SUNRISE 6:05 AM CHST SUNSET 6:49 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$