Climatological Report (Monthly)
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389
CXUS56 KSGX 011723
CLMONT


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
1023 AM PDT THU JUN 1 2017

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             103   05/13/2013
                        05/12/2013
                        05/03/2004
 LOW               -5   05/10/2017
HIGHEST            96   05/21        80      16       92  05/03
                        05/20
LOWEST             44   05/08        53      -9       43  05/06
AVG. MAXIMUM     79.9              78.9     1.0     76.4
AVG. MINIMUM     55.4              55.5    -0.1     54.8
MEAN             67.6              67.2     0.4     65.6
DAYS MAX >= 90      9               3.5     5.5        2
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MAX >= 100     0                                  0
DAYS MAX >= 110     0                                  0
DAYS MIN <= 32      0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.52   1977
 MINIMUM         0.00   1983
TOTALS           0.56              0.30    0.26     1.27
DAILY AVG.       0.02              0.01    0.01     0.04
DAYS >= .01         3                MM      MM        2
DAYS >= .10         2                MM      MM        1
DAYS >= .50         0                MM      MM        1
DAYS >= 1.00        0                MM      MM        1
DAYS >= 1.50        0                                  0
DAYS >= 2.00        0                                  0
GREATEST
 24 HR. TOTAL    0.35   05/07 TO 05/07           05/05 TO 05/06
                                                          05/31 TO 05/31
                                                          05/31 TO 05/31
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    05/06(00) TO 05/06(00)
                                                 05/31(00) TO 05/31(00)1
                                                 05/31(00) TO 05/31(00)1

DEGREE_DAYS
HEATING TOTAL      53                39      14       44
 SINCE 7/1       1292              1532    -240     1218
COOLING TOTAL     143               107      36       71
 SINCE 1/1        278               166     112      228

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

WIND (MPH)
AVERAGE WIND SPEED              7.5
RESULTANT WIND SPEED/DIRECTION   6/252
HIGHEST WIND SPEED/DIRECTION    22/280    DATE  05/20
HIGHEST GUST SPEED/DIRECTION    33/050    DATE  05/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     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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