517
CDCA42 TJSJ 182120
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
520 PM AST TUE AUG 18 2026
...............................
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 18 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1898 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 91 1:42 PM 95 2024 89 2 92
MINIMUM 80 6:30 AM 72 1956 78 2 81
AVERAGE 86 84 2 87
PRECIPITATION (IN)
TODAY T 1.80 1967 0.21 -0.21 T
MONTH TO DATE 0.84 3.45 -2.61 5.37
SINCE JUN 1 2.90 14.13 -11.23 14.95
SINCE JAN 1 23.85 33.10 -9.25 39.35
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 18 3 22
MONTH TO DATE 375 324 51 346
SINCE JUN 1 1593 1430 163 1459
SINCE JAN 1 3846 3563 283 3783
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 10.1
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85
LOWEST 59
AVERAGE 72
......................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 93 1991
2020
2025
MINIMUM TEMPERATURE (F) 78 73 1956
SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE 6:07 AM AST SUNSET 6:49 PM AST
AUGUST 19 2026........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.
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