988
CXUS56 KSGX 131203
CLMMYF
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
403 AM PST TUE JAN 13 2026
...............................
...THE SAN DIEGO/MONTGOMERY FLD CA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 90 12/01/1998
LOW 32 12/24/1998
HIGHEST 82 12/10 MM MM 81 12/07
12/18
LOWEST 42 12/29 MM MM 41 12/12
AVG. MAXIMUM 70.4 67.3 3.1 68.5
AVG. MINIMUM 50.1 45.3 4.8 46.2
MEAN 60.2 56.3 3.9 57.4
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MAX >= 45 31 31
DAYS MIN <= 32 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 6.31 2010
TOTALS 1.02 1.61 -0.59 0.02
DAILY AVG. 0.03 0.05 -0.02 0.00
DAYS >= .01 5 7.1 -2.1 2
DAYS >= .10 3 3.3 -0.3 0
DAYS >= .50 1 1.1 -0.1 0
DAYS >= 1.00 0 0.4 -0.4 0
DAYS >= %-5.2F 0 0
DAYS >= %-5.2F 0 0
GREATEST
24 HR. TOTAL 0.52 12/24 TO 12/24 0.01 12/24 TO 12/24
12/12 TO 12/12
12/24 TO 12/24
STORM TOTAL 0.52 0.01
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 148 272 -124 229
SINCE 7/1 259 439 -180 MM
COOLING TOTAL 7 2 5 0
SINCE 1/1 926 1018 -92 MM
FREEZE DATES
RECORD
EARLIEST MM
LATEST MM
EARLIEST MM
LATEST MM
............................................................
WIND (MPH)
AVERAGE WIND SPEED 3.7
RESULTANT WIND SPEED/DIRECTION 1/320
HIGHEST WIND SPEED/DIRECTION 35/170 DATE 12/24
HIGHEST GUST SPEED/DIRECTION 51/190 DATE 12/24
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.31
NUMBER OF DAYS FAIR 20
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 3
LIGHT RAIN 6 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 21 FOG W/VIS <= 1/4 MILE 12
HAZE 10
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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