Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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108
CDGM40 PGUM 141610
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
210 AM CHST WED OCT 15 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 14 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 86 12:04 PM 91 2015 87 -1 87
2016
MINIMUM 75 11:15 PM 66 1991 77 -2 78
AVERAGE 81 82 -1 83
PRECIPITATION (IN)
YESTERDAY 0.45 5.37 2001 0.42 0.03 0.01
MONTH TO DATE 3.43 6.34 -2.91 7.29
SINCE SEP 1 15.77 21.51 -5.74 31.67
SINCE JAN 1 71.05 78.14 -7.09 78.89
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 16 17 -1 18
MONTH TO DATE 229 238 -9 237
SINCE SEP 1 718 740 -22 751
SINCE JAN 1 4847 4868 -21 4849
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (100)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 9.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 11:00 PM
LOWEST 77 5:00 PM
AVERAGE 86
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2016
MINIMUM TEMPERATURE (F) 77 66 1994
SUNRISE AND SUNSET
OCTOBER 15 2025.......SUNRISE 6:11 AM CHST SUNSET 6:02 PM CHST
OCTOBER 16 2025.......SUNRISE 6:12 AM CHST SUNSET 6:01 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$