699
CXGM50 PGUM 040825
CLMGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
625 PM CHST MON AUG 04 2025
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...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JULY 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1945 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 95 07/18/1969
LOW 69 07/10/2006
HIGHEST 90 07/29 89 07/24
07/27
07/28
LOWEST 74 07/25 74 07/25
07/26
07/27
AVG. MAXIMUM 86.3 87.9 -1.6 87.3
AVG. MINIMUM 77.1 77.1 -0.0 77.3
MEAN 81.7
DAYS MAX >= 90 1 6.8 -5.8 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 29.80 2002 (9.35" TY CHATAAN)
MINIMUM 4.46 1954
TOTALS 12.99 12.25 0.74 7.51
DAILY AVG. 0.42 0.40 0.02 0.24
DAYS >= .01 27 26.0 1.0 29
DAYS >= .10 19 17.8 1.2 23
DAYS >= .50 9 6.7 2.3 4
DAYS >= 1.00 4 3.3 0.7 0
DAYS >= 3.00 0
GREATEST
24 HR. TOTAL 2.04 07/20 TO 07/20 0.89
DEGREE DAYS
COOLING TOTAL 525 542 -17 546
SINCE 1/1 3598 3606 -8 3558
FREEZE DATES
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WIND (MPH)
AVERAGE WIND SPEED 6.5
RESULTANT WIND SPEED/DIRECTION 4/140
HIGHEST WIND SPEED/DIRECTION 25/260 DATE 07/27
HIGHEST GUST SPEED/DIRECTION 39/000 DATE 07/25
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.37
NUMBER OF DAYS FAIR 17
NUMBER OF DAYS PC 13
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 83
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 HEAVY RAIN 13
RAIN 16 LIGHT RAIN 29
FOG 0 HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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