Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDCA42 TJSJ 210851
CLIIST
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
451 AM AST THU AUG 21 2025
...................................
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR AUGUST 20 2025...
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)
YESTERDAY
MAXIMUM 90 4:52 PM 97 1993 90 0 90
MINIMUM 83 11:59 PM 73 1954 80 3 81
AVERAGE 87 85 2 86
PRECIPITATION (IN)
YESTERDAY 0.00 2.04 1954 0.14 -0.14 0.08
MONTH TO DATE 2.64 2.64 0.00 6.96
SINCE JUN 1 4.68 7.90 -3.22 10.14
SINCE JAN 1 20.78 19.56 1.22 10.14
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 22 20 2 21
MONTH TO DATE 433 400 33 380
SINCE JUN 1 1677 1577 100 1329
SINCE JAN 1 4069 3840 229 2574
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SE (130)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 12.0
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82
LOWEST 65
AVERAGE 74
..........................................................
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 98 1992
MINIMUM TEMPERATURE (F) 80 74 1989
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:03 AM AST SUNSET 6:42 PM AST
AUGUST 22 2025........SUNRISE 6:03 AM AST SUNSET 6:42 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$