155
CXUS56 KSGX 020255
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
755 PM PDT THU MAY 01 2025

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF APRIL 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            101   04/26/2004
 LOW              33   04/10/1999
HIGHEST           89   04/05         76      13       88  04/11
                       04/09
                       04/11
LOWEST            43   04/02         49      -6       41  04/06
AVG. MAXIMUM    73.9               75.7    -1.8     72.7
AVG. MINIMUM    51.6               51.1     0.5     49.7
MEAN            62.7               63.4    -0.7     61.2
DAYS MAX >= 90     0                2.6    -2.6        0
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        5.95   1965
 MINIMUM        0.00   1979
TOTALS          0.26               0.76   -0.50     0.56
DAILY AVG.      0.01               0.03   -0.02     0.02
DAYS >= .01        2                3.6    -1.6        5
DAYS >= .10        1                1.8    -0.8        3
DAYS >= .50        0                0.7    -0.7        0
DAYS >= 1.00       0                0.1    -0.1        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   0.25   04/26 TO 04/26               0.40  04/13 TO 04/14
 STORM TOTAL    0.25                                0.31
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL    107                105       2      134
 SINCE 7/1      1102               1250    -148       MM
COOLING TOTAL     44                 57     -13       25
 SINCE 1/1        76                 93     -17       MM

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

WIND (MPH)
AVERAGE WIND SPEED              6.3
RESULTANT WIND SPEED/DIRECTION   5/240
HIGHEST WIND SPEED/DIRECTION    26/050    DATE  04/05
HIGHEST GUST SPEED/DIRECTION    37/050    DATE  04/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.49
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                4     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                     14

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

$$