619
CXUS56 KSGX 010940
CLMMYF
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
240 AM PDT WED OCT 01 2025
...............................
...THE SAN DIEGO/MONTGOMERY FLD CA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 107 09/14/2012
09/27/2010
LOW 52 09/30/2019
HIGHEST 90 09/16 MM MM 103 09/08
LOWEST 61 09/29 MM MM 55 09/17
AVG. MAXIMUM 80.4 81.4 -1.0 80.4
AVG. MINIMUM 65.9 63.6 2.3 63.8
MEAN 73.2 72.5 0.7 72.1
DAYS MAX >= 90 1 4.1 -3.1 7
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MAX >= 45 30 30
DAYS MIN <= 32 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 1.08 2014
TOTALS 0.28 0.17 0.11 0.02
DAILY AVG. 0.01 0.01 0.00 0.00
DAYS >= .01 3 1.3 1.7 1
DAYS >= .10 1 0.4 0.6 0
DAYS >= .50 0 0.1 -0.1 0
DAYS >= 1.00 0 0.1 -0.1 0
DAYS >= %-5.2F 0 0
DAYS >= %-5.2F 0 0
GREATEST
24 HR. TOTAL 0.26 09/17 TO 09/18 0.02 09/20 TO 09/20
STORM TOTAL 0.21 0.02
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 0 2 -2 1
SINCE 7/1 0 1 -1 MM
COOLING TOTAL 253 227 26 221
SINCE 1/1 833 873 -40 MM
FREEZE DATES
RECORD
EARLIEST MM
LATEST MM
EARLIEST MM
LATEST MM
............................................................
WIND (MPH)
AVERAGE WIND SPEED 5.5
RESULTANT WIND SPEED/DIRECTION 4/290
HIGHEST WIND SPEED/DIRECTION 20/340 DATE 09/17
HIGHEST GUST SPEED/DIRECTION 27/340 DATE 09/17
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.39
NUMBER OF DAYS FAIR 14
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 72
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 1
LIGHT RAIN 5 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 18 FOG W/VIS <= 1/4 MILE 2
HAZE 5
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page