Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 172001
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
401 PM AST THU SEP 17 2026
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
VALID TODAY AS OF 0400 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 93 12:29 PM 95 1995 89 4 91
MINIMUM 79 6:32 AM 72 1954 78 1 78
AVERAGE 86 83 3 85
PRECIPITATION (IN)
TODAY T 1.68 1911 0.21 -0.21 0.39
MONTH TO DATE 4.10 3.90 0.20 3.03
SINCE SEP 1 4.10 3.90 0.20 3.03
SINCE JAN 1 29.03 39.84 -10.81 46.65
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 21 18 3 20
MONTH TO DATE 333 306 27 330
SINCE SEP 1 333 306 27 330
SINCE JAN 1 4451 4117 334 4375
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90
LOWEST 60
AVERAGE 75
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 96 1995
MINIMUM TEMPERATURE (F) 78 71 1960
SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE 6:12 AM AST SUNSET 6:24 PM AST
SEPTEMBER 18 2026.....SUNRISE 6:12 AM AST SUNSET 6:24 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$