465
CXUS56 KSGX 011040
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
240 AM PST SAT FEB 01 2025

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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             90   01/31/2003
 LOW              25   01/14/2007
                       01/14/1962
HIGHEST           85   01/02         68      17       80  01/27
LOWEST            39   01/11         45      -6       34  01/08
                       01/31
AVG. MAXIMUM    67.5               67.7    -0.2     65.4
AVG. MINIMUM    44.8               44.6     0.2     44.4
MEAN            56.1               56.1     0.0     54.9
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MAX >= 45    31                                  31
DAYS MAX >= 120    0                                   0
DAYS MIN <= 32     0                0.5    -0.5        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       12.47   1969
 MINIMUM        0.00   2003
TOTALS          0.69               2.57   -1.88     0.78
DAILY AVG.      0.02               0.08   -0.06     0.03
DAYS >= .01        2                5.1    -3.1        5
DAYS >= .10        1                3.4    -2.4        2
DAYS >= .50        1                1.6    -0.6        0
DAYS >= 1.00       0                0.7    -0.7        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   0.62   01/26 TO 01/26               0.36  01/03 TO 01/03
 STORM TOTAL    0.62                                0.36
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL    268                280     -12      306
 SINCE 7/1       615                749    -134       MM
COOLING TOTAL      1                  5      -4        0
 SINCE 1/1         1                  5      -4       MM

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

WIND (MPH)
AVERAGE WIND SPEED              7.8
RESULTANT WIND SPEED/DIRECTION   4/030
HIGHEST WIND SPEED/DIRECTION    46/050    DATE  01/09
HIGHEST GUST SPEED/DIRECTION    76/040    DATE  01/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.36
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     42

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      0
HAZE                     13

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

$$