581
CXUS56 KSGX 020302
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
802 PM PDT TUE APR 01 2025

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF MARCH 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             94   03/14/2013
                       03/11/2007
                       09/27/2010
 LOW              33   03/12/2006
HIGHEST           92   03/24         71      21       77  03/18
LOWEST            39   03/08         47      -8       40  03/25
AVG. MAXIMUM    67.4               71.7    -4.3     65.6
AVG. MINIMUM    47.7               48.7    -1.0     47.5
MEAN            57.5               60.2    -2.7     56.6
DAYS MAX >= 90     1                0.9     0.1        0
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       11.65   1978
 MINIMUM        0.00   1972
TOTALS          1.69               1.64    0.05     3.49
DAILY AVG.      0.05               0.05   -0.00     0.11
DAYS >= .01       10                5.3     4.7        7
DAYS >= .10        3                2.7     0.3        5
DAYS >= .50        1                0.7     0.3        2
DAYS >= 1.00       0                0.3    -0.3        1
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   0.87   03/12 TO 03/13               1.42  03/30 TO 03/30
 STORM TOTAL    0.83                                1.42
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL    237                172      65      256
 SINCE 7/1       995               1144    -149       MM
COOLING TOTAL     13                 23     -10        0
 SINCE 1/1        32                 36      -4       MM

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

WIND (MPH)
AVERAGE WIND SPEED              5.7
RESULTANT WIND SPEED/DIRECTION   4/240
HIGHEST WIND SPEED/DIRECTION    29/290    DATE  03/13
HIGHEST GUST SPEED/DIRECTION    37/230    DATE  03/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.55
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      0
HAZE                     11

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

$$