Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 181934
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
334 PM AST MON AUG 18 2025
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 18 2025...
VALID TODAY AS OF 0300 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 92 3:22 PM 95 2024 89 3 95
MINIMUM 81 6:13 AM 72 1956 78 3 80
AVERAGE 87 84 3 88
PRECIPITATION (IN)
TODAY T 1.80 1967 0.21 -0.21 T
MONTH TO DATE 5.37 3.45 1.92 7.02
SINCE JUN 1 14.95 14.13 0.82 15.19
SINCE JAN 1 39.35 33.10 6.25 48.07
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 22 18 4 23
MONTH TO DATE 346 324 22 381
SINCE JUN 1 1459 1430 29 1667
SINCE JAN 1 3783 3563 220 4179
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 8.5
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80
LOWEST 58
AVERAGE 69
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 93 1991
2020
MINIMUM TEMPERATURE (F) 78 73 1956
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:07 AM AST SUNSET 6:49 PM AST
AUGUST 19 2025........SUNRISE 6:07 AM AST SUNSET 6:48 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$