Climatological Report (Monthly)
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000
CXUS56 KSGX 012031
CLMONT


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
131 PM PDT MON MAY 1 2017

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF APRIL 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             101   04/26/2004
 LOW               33   04/10/1999
HIGHEST            95   04/22        76      19       98  04/06
LOWEST             43   04/01        49      -6       47  04/26
                                                          04/01
AVG. MAXIMUM     79.7              74.0     5.7     78.8
AVG. MINIMUM     52.8              50.5     2.3     53.6
MEAN             66.3              62.3     4.0     66.2
DAYS MAX >= 90      2               1.9     0.1        6
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         5.95   1965
 MINIMUM         0.00   1979
TOTALS           0.04              0.94   -0.90     0.29
DAILY AVG.       0.00              0.03   -0.03     0.01
DAYS >= .01         1                MM      MM        6
DAYS >= .10         0                MM      MM        1
DAYS >= .50         0                MM      MM        0
DAYS >= 1.00        0                MM      MM        0
DAYS >= 1.50        0                                  0
DAYS >= 2.00        0                                  0
GREATEST
 24 HR. TOTAL    0.04   04/08 TO 04/08           04/25 TO 04/25
                        04/07 TO 04/08                    04/30 TO 04/30
                        04/08 TO 04/08                    04/30 TO 04/30
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    04/25(00) TO 04/25(00)
                                                 04/30(00) TO 04/30(00)0
                                                 04/30(00) TO 04/30(00)0

DEGREE_DAYS
HEATING TOTAL      30               124     -94       48
 SINCE 7/1       1239              1493    -254     1174
COOLING TOTAL      77                41      36       93
 SINCE 1/1        135                59      76      157

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

WIND (MPH)
AVERAGE WIND SPEED              6.5
RESULTANT WIND SPEED/DIRECTION   4/246
HIGHEST WIND SPEED/DIRECTION    33/040    DATE  04/29
HIGHEST GUST SPEED/DIRECTION    46/050    DATE  04/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     51

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      8

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

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