Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 212121
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
521 PM AST MON JUL 21 2025
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR JULY 21 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 89 12:47 PM 93 1981 89 0 90
MINIMUM 77 6:10 AM 71 1957 78 -1 82
AVERAGE 83 83 0 86
PRECIPITATION (IN)
TODAY 0.17 2.31 2009 0.21 -0.04 0.02
MONTH TO DATE 3.77 3.98 -0.21 2.87
SINCE JUN 1 7.78 8.64 -0.86 6.28
SINCE JAN 1 32.18 27.61 4.57 39.16
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 18 18 0 21
MONTH TO DATE 393 378 15 441
SINCE JUN 1 920 921 -1 1080
SINCE JAN 1 3244 3054 190 3592
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 10.2
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88
LOWEST 59
AVERAGE 74
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 94 2023
MINIMUM TEMPERATURE (F) 78 70 1936
SUNRISE AND SUNSET
JULY 21 2025..........SUNRISE 5:58 AM AST SUNSET 7:03 PM AST
JULY 22 2025..........SUNRISE 5:59 AM AST SUNSET 7:02 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$