Climatological Report (Monthly)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
879
CXGM50 PGUM 030244
CLMGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
1244 PM CHST THU JUL 03 2025
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...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JUNE 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 06/30/1969
LOW 70 06/22/1966
06/14/1958
06/12/1949
HIGHEST 90 06/16 90 06/10
06/07
LOWEST 73 06/06 73 06/14
AVG. MAXIMUM 86.7 88.7 -2.0 87.2
AVG. MINIMUM 76.8 78.1 -1.3 77.6
MEAN 81.7
DAYS MAX >= 90 2 10.5 -8.5 1
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 38.03 2004 (18.48" DURING TY TINGTING)
MINIMUM 0.83 1983
TOTALS 13.50 6.51 6.99 8.00
DAILY AVG. 0.45 0.22 0.23 0.27
DAYS >= .01 23 23.2 -0.2 28
DAYS >= .10 15 14.0 1.0 17
DAYS >= .50 7 4.0 3.0 5
DAYS >= 1.00 3 1.2 1.8 3
DAYS >= 3.00 1 0
GREATEST
24 HR. TOTAL 5.37 06/26 TO 06/26 1.38 06/12
DEGREE DAYS
COOLING TOTAL 509 552 -43 531
SINCE 1/1 3073 3064 9 3012
FREEZE DATES
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WIND (MPH)
AVERAGE WIND SPEED 7.5
RESULTANT WIND SPEED/DIRECTION 6/100
HIGHEST WIND SPEED/DIRECTION 27/110 DATE 06/25
HIGHEST GUST SPEED/DIRECTION 38/100 DATE 06/25
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.35
NUMBER OF DAYS FAIR 17
NUMBER OF DAYS PC 10
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 81
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 HEAVY RAIN 9
RAIN 11 LIGHT RAIN 27
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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