Climatological Report (Daily)
Issued by NWS
Issued by NWS
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894
CDCA42 TJSJ 180851
CLIIST
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
451 AM AST MON AUG 18 2025
...................................
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR AUGUST 17 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 85 6:45 PM 95 1995 90 -5 89
MINIMUM 76 9:02 AM 74 2015 80 -4 75
AVERAGE 81 85 -4 82
PRECIPITATION (IN)
YESTERDAY 2.22 4.24 2022 0.14 2.08 0.80
MONTH TO DATE 2.63 2.23 0.40 6.86
SINCE JUN 1 4.67 7.49 -2.82 10.04
SINCE JAN 1 20.77 19.15 1.62 10.04
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 16 20 -4 17
MONTH TO DATE 368 340 28 318
SINCE JUN 1 1612 1517 95 1267
SINCE JAN 1 4004 3780 224 2512
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 38 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 57 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 18.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96
LOWEST 82
AVERAGE 89
..........................................................
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 95 1994
MINIMUM TEMPERATURE (F) 80 73 1953
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.
$$