Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 200634
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
434 PM CHST SUN JUL 20 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 20 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 83 11:57 AM 93 1969 88 -5 87
MINIMUM 76 6:46 AM 73 2002 77 -1 77
AVERAGE 80 82 -2 82
PRECIPITATION (IN)
TODAY 2.02 4.48 1971 0.42 1.60 0.33
MONTH TO DATE 8.13 7.13 1.00 4.74
SINCE JUN 1 21.63 13.64 7.99 12.74
SINCE JAN 1 37.36 33.85 3.51 29.61
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 15 17 -2 17
MONTH TO DATE 346 356 -10 353
SINCE JUN 1 855 908 -53 884
SINCE JAN 1 3419 3420 -1 3365
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 3.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1:00 AM
LOWEST 82 12:00 PM
AVERAGE 90
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 92 1969
1994
MINIMUM TEMPERATURE (F) 77 71 1967
SUNRISE AND SUNSET
JULY 20 2025..........SUNRISE 6:03 AM CHST SUNSET 6:52 PM CHST
JULY 21 2025..........SUNRISE 6:03 AM CHST SUNSET 6:51 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$