326
CXUS56 KSGX 021102
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
302 AM PST SUN NOV 02 2025

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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   10/01/2012
 LOW              41   10/31/2019
HIGHEST           96   10/28         83      13      103  10/02
LOWEST            52   10/16         56      -4       49  10/30
AVG. MAXIMUM    81.4               82.6    -1.2     86.5
AVG. MINIMUM    57.1               57.1     0.0     59.5
MEAN            69.2               69.8    -0.6     73.0
DAYS MAX >= 90     5                8.0    -3.0       13
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        2.20   1957
 MINIMUM        0.00   2019
TOTALS          1.08               0.41    0.67     0.06
DAILY AVG.      0.03               0.01    0.02     0.00
DAYS >= .01        1                2.2    -1.2        1
DAYS >= .10        1                0.9     0.1        0
DAYS >= .50        1                0.3     0.7        0
DAYS >= 1.00       1                0.1     0.9        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   1.08   10/14 TO 10/14               0.06  10/28 TO 10/28
 STORM TOTAL    1.08                                0.06
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL     14                 26     -12       13
 SINCE 7/1        14                 24     -10       MM
COOLING TOTAL    152                176     -24      267
 SINCE 1/1      1941               1927      14       MM

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

WIND (MPH)
AVERAGE WIND SPEED              4.4
RESULTANT WIND SPEED/DIRECTION   3/250
HIGHEST WIND SPEED/DIRECTION    21/050    DATE  10/17
HIGHEST GUST SPEED/DIRECTION    31/030    DATE  10/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.22
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      4
HAZE                      9

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

$$