Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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223
CDGM40 PGUM 211620
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
220 AM CHST TUE JUL 22 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 21 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 2:40 PM 92 1969 88 0 87
1994
MINIMUM 76 5:24 AM 71 1967 77 -1 78
AVERAGE 82 82 0 83
PRECIPITATION (IN)
YESTERDAY 0.21 4.88 2014 0.44 -0.23 0.12
MONTH TO DATE 8.36 7.57 0.79 4.86
SINCE JUN 1 21.86 14.08 7.78 12.86
SINCE JAN 1 37.59 34.29 3.30 29.73
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 17 17 0 18
MONTH TO DATE 363 373 -10 371
SINCE JUN 1 872 925 -53 902
SINCE JAN 1 3436 3437 -1 3383
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SE (130)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (99)
AVERAGE WIND SPEED 6.1
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 96 5:00 AM
LOWEST 70 1:00 PM
AVERAGE 83
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 92 1966
1994
MINIMUM TEMPERATURE (F) 77 71 1986
SUNRISE AND SUNSET
JULY 22 2025..........SUNRISE 6:03 AM CHST SUNSET 6:51 PM CHST
JULY 23 2025..........SUNRISE 6:04 AM CHST SUNSET 6:51 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$