Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KSGX 180921
CLISDM
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
221 AM PDT MON AUG 18 2025
...................................
...THE SAN DIEGO/BROWN CLIMATE SUMMARY FOR AUGUST 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 79 12:06 PM 91 2016 81 -2 80
MINIMUM 63 5:47 AM 59 2017 63 0 62
2023
AVERAGE 71 72 -1 71
PRECIPITATION (IN)
YESTERDAY 0.00 0.00 2020 0.00 0.00 0.00
MONTH TO DATE 0.00 0.00 0.00 T
SINCE JUL 1 0.00 0.04 -0.04 T
SINCE OCT 1 4.10 10.04 -5.94 12.99
SINCE JAN 1 4.00 6.95 -2.95 10.99
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 6 23 -17 6
SINCE JUL 1 0 1 -1 0
COOLING
YESTERDAY 6 7 -1 6
MONTH TO DATE 101 111 -10 155
SINCE JUN 1 329 319 10 463
SINCE JAN 1 377 367 10 463
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 4.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 7:00 PM
LOWEST 50 12:00 PM
AVERAGE 69
..........................................................
THE SAN DIEGO/BROWN CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 91 2010
2020
MINIMUM TEMPERATURE (F) 63 58 1999
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:14 AM PDT SUNSET 7:29 PM PDT
AUGUST 19 2025........SUNRISE 6:15 AM PDT SUNSET 7:28 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$