Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 171939
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
339 PM AST SUN AUG 17 2025
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 17 2025...
VALID TODAY AS OF 0300 PM LOCAL TIME.
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)
TODAY
MAXIMUM 82 3:38 PM 93 1984 89 -7 90
MINIMUM 76 10:58 AM 71 1903 78 -2 78
AVERAGE 79 84 -5 84
PRECIPITATION (IN)
TODAY 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
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 14 18 -4 19
MONTH TO DATE 323 306 17 358
SINCE JUN 1 1436 1412 24 1644
SINCE JAN 1 3760 3545 215 4156
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 6.9
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96
LOWEST 79
AVERAGE 88
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 95 2024
MINIMUM TEMPERATURE (F) 78 72 1956
SUNRISE AND SUNSET
AUGUST 17 2025........SUNRISE 6:06 AM AST SUNSET 6:49 PM AST
AUGUST 18 2025........SUNRISE 6:07 AM AST SUNSET 6:49 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$