


Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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416 CDCA42 TJSJ 210853 CLISJU CLIMATE REPORT NATIONAL WEATHER SERVICE SAN JUAN PR 453 AM AST SUN SEP 21 2025 ................................... ...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 20 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 92 11:41 AM 95 1981 89 3 91 MINIMUM 76 4:45 AM 72 1920 77 -1 77 AVERAGE 84 83 1 84 PRECIPITATION (IN) YESTERDAY 0.32 7.11 2017 0.21 0.11 0.54 MONTH TO DATE 3.95 4.54 -0.59 3.04 SINCE SEP 1 3.95 4.54 -0.59 3.04 SINCE JAN 1 47.57 40.48 7.09 53.25 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 19 18 1 19 MONTH TO DATE 382 360 22 423 SINCE SEP 1 382 360 22 423 SINCE JAN 1 4427 4171 256 4874 ................................................................... WIND (MPH) HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (60) HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (360) AVERAGE WIND SPEED 2.8 SKY COVER AVERAGE SKY COVER 0.3 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. THUNDERSTORM RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 88 LOWEST 56 AVERAGE 72 .......................................................... THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 89 95 2019 MINIMUM TEMPERATURE (F) 77 71 1960 SUNRISE AND SUNSET SEPTEMBER 21 2025.....SUNRISE 6:13 AM AST SUNSET 6:21 PM AST SEPTEMBER 22 2025.....SUNRISE 6:13 AM AST SUNSET 6:20 PM AST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$