Climatological Report (Monthly)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
243
CXGM50 PGUM 031239
CLMGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
1039 PM CHST SAT MAY 03 2025
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...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 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 96 04/18/1971
04/01/1990
LOW 68 04/06/1965
HIGHEST 89 04/10 90 04/23
04/21
04/23
04/27
LOWEST 74 04/05 74 04/15
AVG. MAXIMUM 87.5 88.1 -0.6 87.5
AVG. MINIMUM 76.6 76.9 -0.3 77.2
MEAN 82.1
DAYS MAX >= 90 0 4.4 -4.4 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 15.28 1963 (TY OLIVE (10.53" 2 DAY TOTAL)
MINIMUM 0.51 1966
TOTALS 2.41 3.50 -1.09 7.17
DAILY AVG. 0.08 0.12 -0.04 0.24
DAYS >= .01 17 18.9 -1.9 19
DAYS >= .10 10 8.3 1.7 7
DAYS >= .50 0 1.3 -1.3 1
DAYS >= 1.00 0 0.5 -0.5 1
DAYS >= 3.00 0
GREATEST
24 HR. TOTAL 0.47 04/17 TO 04/17 5.57 04/24
SNOWFALL (INCHES)
TOTALS 0.0
SINCE 7/1 0.0
GREATEST
SNOW DEPTH 0
DEGREE DAYS
COOLING TOTAL 519 525 -6 528
SINCE 1/1 1988 1948 40 1927
FREEZE DATES
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WIND (MPH)
AVERAGE WIND SPEED 10.4
RESULTANT WIND SPEED/DIRECTION 10/090
HIGHEST WIND SPEED/DIRECTION 23/090 DATE 04/30
HIGHEST GUST SPEED/DIRECTION 34/090 DATE 04/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.26
NUMBER OF DAYS FAIR 26
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 HEAVY RAIN 4
RAIN 7 LIGHT RAIN 19
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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