Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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187
CDGM40 PGUM 111618
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
218 AM CHST SUN OCT 12 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 11 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 1:05 PM 91 2004 87 1 86
MINIMUM 75 5:14 AM 68 1957 77 -2 75
1962
AVERAGE 82 82 0 81
PRECIPITATION (IN)
YESTERDAY T 4.63 2022 0.43 -0.43 0.55
MONTH TO DATE 2.65 5.06 -2.41 6.82
SINCE SEP 1 14.99 20.23 -5.24 31.20
SINCE JAN 1 70.27 76.86 -6.59 78.42
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 17 17 0 16
MONTH TO DATE 177 187 -10 185
SINCE SEP 1 666 689 -23 699
SINCE JAN 1 4795 4817 -22 4797
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (80)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 6:00 AM
LOWEST 68 1:00 PM
AVERAGE 82
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2018
MINIMUM TEMPERATURE (F) 77 67 1959
1980
SUNRISE AND SUNSET
OCTOBER 12 2025.......SUNRISE 6:11 AM CHST SUNSET 6:03 PM CHST
OCTOBER 13 2025.......SUNRISE 6:11 AM CHST SUNSET 6:03 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$