Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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064
CDGM40 PGUM 071644
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
244 AM CHST WED OCT 08 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 7 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 81 10:47 AM 91 2016 87 -6 89
MINIMUM 72 1:10 AM 69 1977 77 -5 77
1989
1992
AVERAGE 77 82 -5 83
PRECIPITATION (IN)
YESTERDAY 1.49 3.11 2006 0.45 1.04 0.08
MONTH TO DATE 2.26 3.29 -1.03 2.60
SINCE SEP 1 14.60 18.46 -3.86 26.98
SINCE JAN 1 69.88 75.09 -5.21 74.20
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 12 17 -5 18
MONTH TO DATE 111 119 -8 121
SINCE SEP 1 600 621 -21 635
SINCE JAN 1 4729 4749 -20 4733
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 6.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 12:00 AM
LOWEST 79 7:00 PM
AVERAGE 87
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 90 1998
2015
2016
MINIMUM TEMPERATURE (F) 77 69 1963
1968
SUNRISE AND SUNSET
OCTOBER 8 2025.......SUNRISE 6:11 AM CHST SUNSET 6:06 PM CHST
OCTOBER 9 2025.......SUNRISE 6:11 AM CHST SUNSET 6:05 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$