Climatological Report (Monthly)
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CXUS56 KSGX 012059
CLMONT


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
159 PM PDT FRI JUN 1 2018

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF MAY 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             103   05/13/2013
                        05/12/2013
                        05/03/2004
 LOW               42   05/01/1999
HIGHEST            97   05/05        80      17       96  05/21
                                                          05/20
LOWEST             49   05/02        53      -4       44  05/08
AVG. MAXIMUM     76.3              78.9    -2.6     79.9
AVG. MINIMUM     55.3              55.5    -0.2     55.4
MEAN             65.8              67.2    -1.4     67.6
DAYS MAX >= 90      3               3.5    -0.5        9
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.52   1977
 MINIMUM         0.00   1983
TOTALS           0.07              0.30   -0.23     0.56
DAILY AVG.       0.00              0.01   -0.01     0.02
DAYS >= .01         2                MM      MM        3
DAYS >= .10         0                MM      MM        2
DAYS >= .50         0                MM      MM        0
DAYS >= 1.00        0                MM      MM        0
GREATEST
 24 HR. TOTAL    0.04   05/02 TO 05/02           05/07 TO 05/07
                                                          05/31 TO 05/31EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          05/31 TO 05/31EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    05/07(00) TO 05/07(00)
                                                 05/31(00) TO 05/31(00)1EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                 05/31(00) TO 05/31(00)1EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL      48                39       9       53
 SINCE 7/1        854              1532    -678     1292
COOLING TOTAL      82               107     -25      143
 SINCE 1/1        188               166      22      278

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

WIND (MPH)
AVERAGE WIND SPEED              7.4
RESULTANT WIND SPEED/DIRECTION   6/254
HIGHEST WIND SPEED/DIRECTION    20/230    DATE  05/29
HIGHEST GUST SPEED/DIRECTION    28/250    DATE  05/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  1
  0
  0
  0
  0
  0
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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