Climatological Report (Daily)
Issued by NWS
Issued by NWS
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194
CDCA42 TJSJ 181934
CLIIST
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
334 PM AST MON AUG 18 2025
...................................
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR AUGUST 18 2025...
VALID TODAY AS OF 0300 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1953 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 88 MM 95 1994 90 -2 88
MINIMUM 83 5:36 AM 73 1953 80 3 81
AVERAGE 86 85 1 85
PRECIPITATION (IN)
TODAY 0.01 2.73 2013 0.13 -0.12 0.01
MONTH TO DATE 2.64 2.36 0.28 6.87
SINCE JUN 1 4.68 7.62 -2.94 10.05
SINCE JAN 1 20.78 19.28 1.50 10.05
DEGREE DAYS
HEATING
TODAY 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
TODAY 21 20 1 20
MONTH TO DATE 389 360 29 338
SINCE JUN 1 1633 1537 96 1287
SINCE JAN 1 4025 3800 225 2532
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 17.9
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88
LOWEST 75
AVERAGE 82
..........................................................
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 96 1993
MINIMUM TEMPERATURE (F) 80 74 1979
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:03 AM AST SUNSET 6:44 PM AST
AUGUST 19 2025........SUNRISE 6:03 AM AST SUNSET 6:44 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$