Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 180851
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
451 AM AST MON AUG 18 2025
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1898 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 84 5:29 PM 93 1984 89 -5 90
MINIMUM 76 10:58 AM 71 1903 78 -2 78
AVERAGE 80 84 -4 84
PRECIPITATION (IN)
YESTERDAY 0.78 4.10 2022 0.20 0.58 1.75
MONTH TO DATE 5.37 3.24 2.13 7.02
SINCE JUN 1 14.95 13.92 1.03 15.19
SINCE JAN 1 39.35 32.89 6.46 48.07
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 15 18 -3 19
MONTH TO DATE 324 306 18 358
SINCE JUN 1 1437 1412 25 1644
SINCE JAN 1 3761 3545 216 4156
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96
LOWEST 74
AVERAGE 85
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 95 2024
MINIMUM TEMPERATURE (F) 78 72 1956
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:07 AM AST SUNSET 6:49 PM AST
AUGUST 19 2025........SUNRISE 6:07 AM AST SUNSET 6:48 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$