365
CXUS56 KSGX 010931
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
231 AM PDT TUE OCT 01 2024

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            118   09/05/2020
 LOW              51   09/27/2013
HIGHEST          114   09/06         91      23       98  09/08
                                                          09/09
LOWEST            55   09/17         62      -7       58  09/22
                                                          09/24
AVG. MAXIMUM    90.9               91.3    -0.4     83.7
AVG. MINIMUM    64.3               63.8     0.5     63.2
MEAN            77.6               77.6    -0.0     73.5
DAYS MAX >= 90    13               17.5    -4.5        7
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MAX >= 45    30                                  30
DAYS MAX >= 120    0                                   0
DAYS MIN <= 32     0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.54   1963
 MINIMUM        0.00   2020
TOTALS             T               0.10   -0.10     0.24
DAILY AVG.         T               0.00   -0.00     0.01
DAYS >= .01        0                0.7    -0.7        5
DAYS >= .10        0                0.3    -0.3        1
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   09/20 TO 09/20               0.18  09/01 TO 09/02
                       09/16 TO 09/16
                       09/20 TO 09/20
 STORM TOTAL    0.00                                0.13
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL      0                  1      -1        1
 SINCE 7/1         0                  0       0       MM
COOLING TOTAL    386                378       8      263
 SINCE 1/1      1760               1751       9       MM

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

WIND (MPH)
AVERAGE WIND SPEED              5.4
RESULTANT WIND SPEED/DIRECTION   4/250
HIGHEST WIND SPEED/DIRECTION    29/040    DATE  09/08
HIGHEST GUST SPEED/DIRECTION    43/080    DATE  09/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.29
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     55

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                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                     21

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

$$