658
CXUS56 KSGX 162101
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
201 PM PDT WED SEP 16 2026

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2026...

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            112   08/31/2017
 LOW              54   08/11/2009
HIGHEST          106   08/26         95      11      103  08/07
                                                          08/21
                                                          08/22
LOWEST            65   08/15         63       2       61  08/01
                       08/16
                                                          08/02
                                                          08/03
AVG. MAXIMUM    98.2               94.9     3.3     95.2
AVG. MINIMUM    70.8               65.2     5.6     67.0
MEAN            84.5               80.1     4.4     81.1
DAYS MAX >= 90    29               23.8     5.2       27
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   2026
TOTALS          0.00R              0.03   -0.03        T
DAILY AVG.      0.00               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     MM                                   T  08/23 TO 08/23
 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    614                467     147      506
 SINCE 1/1      1812               1373     439       MM

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

WIND (MPH)
AVERAGE WIND SPEED              6.4
RESULTANT WIND SPEED/DIRECTION   6/250
HIGHEST WIND SPEED/DIRECTION    20/260    DATE  08/16
                                20/270          08/17
                                20/270          08/28
HIGHEST GUST SPEED/DIRECTION    30/250    DATE  08/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     48

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       1     FOG W/VIS <= 1/4 MILE      0
HAZE                     10

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

$$