Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 241603
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
203 AM CHST SUN MAY 25 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 24 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 91 12:55 PM 92 1992 89 2 85
2013
MINIMUM 78 4:07 AM 73 1972 78 0 75
AVERAGE 85 83 2 80
PRECIPITATION (IN)
YESTERDAY 0.01 9.53 2023 0.16 -0.15 1.88
MONTH TO DATE 1.13 3.31 -2.18 3.34
SINCE MAR 1 6.62 9.58 -2.96 12.13
SINCE JAN 1 14.88 19.07 -4.19 16.39
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 20 18 2 15
MONTH TO DATE 446 432 14 430
SINCE MAR 1 1474 1461 13 1448
SINCE JAN 1 2434 2380 54 2357
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 6.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 7:00 AM
LOWEST 54 4:00 PM
AVERAGE 72
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 92 1969
1984
2013
MINIMUM TEMPERATURE (F) 78 73 1997
2003
SUNRISE AND SUNSET
MAY 25 2025...........SUNRISE 5:53 AM CHST SUNSET 6:43 PM CHST
MAY 26 2025...........SUNRISE 5:53 AM CHST SUNSET 6:43 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$