Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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092
CDGM40 PGUM 171621
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
221 AM CHST FRI JUL 18 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 17 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 88 11:56 AM 94 1984 88 0 87
MINIMUM 79 1:37 AM 71 1993 77 2 76
AVERAGE 84 82 2 82
PRECIPITATION (IN)
YESTERDAY 0.10 2.60 1993 0.42 -0.32 0.34
MONTH TO DATE 5.78 5.86 -0.08 3.79
SINCE JUN 1 19.28 12.37 6.91 11.79
SINCE JAN 1 35.01 32.58 2.43 28.66
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 297 305 -8 303
SINCE JUN 1 806 857 -51 834
SINCE JAN 1 3370 3369 1 3315
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 8.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 5:00 PM
LOWEST 68 12:00 PM
AVERAGE 78
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 95 1969
MINIMUM TEMPERATURE (F) 77 72 1949
1967
SUNRISE AND SUNSET
JULY 18 2025..........SUNRISE 6:02 AM CHST SUNSET 6:52 PM CHST
JULY 19 2025..........SUNRISE 6:02 AM CHST SUNSET 6:52 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$