332
CXUS56 KSGX 010944
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
244 AM PDT MON SEP 01 2025

...................................

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF AUGUST 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            112   08/31/2017
 LOW              54   08/11/2009
HIGHEST          103   08/07         95       8      107  08/05
                       08/21
                       08/22
LOWEST            61   08/01         63      -2       60  08/24
                       08/02
                       08/03
                                                          08/29
AVG. MAXIMUM    95.2               94.9     0.3     95.4
AVG. MINIMUM    67.0               65.2     1.8     66.7
MEAN            81.1               80.1     1.0     81.0
DAYS MAX >= 90    27               23.8     3.2       26
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MAX >= 45    31                                  31
DAYS MAX >= 120    0                                   0
DAYS MIN <= 32     0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        1.92   2023
 MINIMUM        0.00   2019
TOTALS             T               0.03   -0.03        T
DAILY AVG.         T               0.00   -0.00        T
DAYS >= .01        0                0.3    -0.3        0
DAYS >= .10        0                0.1    -0.1        0
DAYS >= .50        0                0.0     0.0        0
DAYS >= 1.00       0                0.0     0.0        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL      T   08/23 TO 08/23                  T  08/01 TO 08/01
 STORM TOTAL    0.00                                0.00
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0                  0       0       MM
COOLING TOTAL    506                467      39      508
 SINCE 1/1      1389               1373      16       MM

FREEZE DATES
RECORD
 EARLIEST     11/30/2004
 LATEST       02/14/2006
EARLIEST                        02/24
LATEST                          02/20
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.1
RESULTANT WIND SPEED/DIRECTION   5/240
HIGHEST WIND SPEED/DIRECTION    21/260    DATE  08/25
                                21/260          08/27
                                21/270          08/30
HIGHEST GUST SPEED/DIRECTION    28/240    DATE  08/22
                                28/300          08/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.24
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      0
HAZE                     20

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$