Climatological Report (Daily)
Issued by NWS
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278
CDCA42 TJSJ 290900
CLIIST
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
500 AM AST TUE SEP 29 2026
...................................
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR SEPTEMBER 28 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1953 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 89 2:26 PM 98 1993 89 0 MM
MINIMUM 81 11:20 PM 73 1981 79 2 MM
AVERAGE 85 84 1 MM
PRECIPITATION (IN)
YESTERDAY 0.04 1.84 2002 0.21 -0.17 MM
MONTH TO DATE 0.22 5.45 -5.23 5.42
SINCE SEP 1 0.22 5.45 -5.23 5.42
SINCE JAN 1 11.09 26.74 -15.65 27.07
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 MM
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 20 19 1 MM
MONTH TO DATE 161 543 -382 454
SINCE SEP 1 161 543 -382 454
SINCE JAN 1 4392 4594 -202 4704
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 10.2
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85
LOWEST 61
AVERAGE 73
..........................................................
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 94 1993
MINIMUM TEMPERATURE (F) 79 72 1956
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 6:10 AM AST SUNSET 6:10 PM AST
SEPTEMBER 30 2026.....SUNRISE 6:10 AM AST SUNSET 6:09 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$