Climatological Report (Monthly)
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000
CXUS56 KSGX 012103
CLMONT


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
103 PM PST THU FEB 1 2018

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018

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            86   01/29        68      18       77  01/29
LOWEST             35   01/21        45     -10       34  01/26
AVG. MAXIMUM     73.3              65.2     8.1     61.2
AVG. MINIMUM     47.2              43.8     3.4     43.8
MEAN             60.3              54.5     5.8     52.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MAX >= 100     0                                  0
DAYS MAX >= 110     0                                  0
DAYS MIN <= 32      0               0.4    -0.4        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        12.47   1969
 MINIMUM         0.00   2003
TOTALS           2.01              3.31   -1.30     7.38
DAILY AVG.       0.06              0.11   -0.05     0.24
DAYS >= .01         3                MM      MM       10
DAYS >= .10         3                MM      MM        8
DAYS >= .50         2                MM      MM        6
DAYS >= 1.00        1                MM      MM        3
DAYS >= 1.50        0                                  1
DAYS >= 2.00        0                                  0
GREATEST
 24 HR. TOTAL    1.39   01/09 TO 01/09           01/22 TO 01/23
                                                          01/31 TO 01/31
                                                          01/31 TO 01/31
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    01/23(00) TO 01/23(00)
                                                 01/31(00) TO 01/31(00)1
                                                 01/31(00) TO 01/31(00)1

DEGREE_DAYS
HEATING TOTAL     158               329    -171      377
 SINCE 7/1        345               889    -544      840
COOLING TOTAL      18                 3      15        0
 SINCE 1/1         18                 0      18        0

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

WIND (MPH)
AVERAGE WIND SPEED              4.2
RESULTANT WIND SPEED/DIRECTION   1/353
HIGHEST WIND SPEED/DIRECTION    32/030    DATE  01/28
HIGHEST GUST SPEED/DIRECTION    48/060    DATE  01/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     48

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      9

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

$$



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