Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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001
CDCA42 TJSJ 130851
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
451 AM AST SAT SEP 13 2025
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 12 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 89 1:16 PM 94 2011 89 0 91
2017
MINIMUM 80 6:41 AM 72 1961 78 2 81
AVERAGE 85 83 2 86
PRECIPITATION (IN)
YESTERDAY 0.02 2.90 1905 0.23 -0.21 0.28
MONTH TO DATE 1.80 2.81 -1.01 2.06
SINCE SEP 1 1.80 2.81 -1.01 2.06
SINCE JAN 1 45.42 38.75 6.67 52.27
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 20 18 2 21
MONTH TO DATE 233 216 17 251
SINCE SEP 1 233 216 17 251
SINCE JAN 1 4278 4027 251 4702
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 5.0
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85
LOWEST 68
AVERAGE 77
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 96 2023
MINIMUM TEMPERATURE (F) 78 70 1928
SUNRISE AND SUNSET
SEPTEMBER 13 2025.....SUNRISE 6:11 AM AST SUNSET 6:28 PM AST
SEPTEMBER 14 2025.....SUNRISE 6:12 AM AST SUNSET 6:27 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$