Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 202159
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
559 PM AST THU AUG 20 2026
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 20 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 2:33 PM 96 1980 89 2 92
MINIMUM 80 5:36 AM 69 1904 78 2 80
AVERAGE 86 84 2 86
PRECIPITATION (IN)
TODAY 0.00 3.10 1901 0.20 -0.20 0.00
MONTH TO DATE 0.90 3.86 -2.96 5.45
SINCE JUN 1 2.96 14.54 -11.58 15.03
SINCE JAN 1 23.91 33.51 -9.60 39.43
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 21
MONTH TO DATE 417 360 57 389
SINCE JUN 1 1635 1466 169 1502
SINCE JAN 1 3888 3599 289 3826
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 13.5
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82
LOWEST 56
AVERAGE 69
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 97 1980
MINIMUM TEMPERATURE (F) 78 72 1956
SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE 6:07 AM AST SUNSET 6:47 PM AST
AUGUST 21 2026........SUNRISE 6:07 AM AST SUNSET 6:47 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$