Climatological Report (Monthly)
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000
CXUS56 KSGX 010943
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
143 AM PST THU FEB 01 2024

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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             90   01/31/2003
 LOW              25   01/14/2007
                       01/14/1962
HIGHEST           80   01/27         68      12       70  01/25
LOWEST            34   01/08         45     -11       35  01/21
                                                          01/24
AVG. MAXIMUM    65.4               67.7    -2.3     60.6
AVG. MINIMUM    44.4               44.6    -0.2     42.2
MEAN            54.9               56.1    -1.2     51.4
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          0.78               2.57   -1.79     4.81
DAILY AVG.      0.03               0.08   -0.05     0.20
DAYS >= .01        5                5.1    -0.1        7
DAYS >= .10        2                3.4    -1.4        4
DAYS >= .50        0                1.6    -1.6        4
DAYS >= 1.00       0                0.7    -0.7        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   0.36   01/03 TO 01/03               1.79  01/14 TO 01/15
 STORM TOTAL    0.36                                1.72
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL    306                280      26      413
 SINCE 7/1       590                749    -159       MM
COOLING TOTAL      0                  5      -5        0
 SINCE 1/1         0                  5      -5       MM

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

WIND (MPH)
AVERAGE WIND SPEED              3.8
RESULTANT WIND SPEED/DIRECTION   1/270
HIGHEST WIND SPEED/DIRECTION    22/040    DATE  01/26
HIGHEST GUST SPEED/DIRECTION    29/360    DATE  01/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.53
NUMBER OF DAYS FAIR            9
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      2
HAZE                     14

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

$$


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