National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS56 KSGX 010946
CLMONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
246 AM PDT MON MAY 01 2023

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

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023

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           90   04/21         76      14       98  04/08
LOWEST            38   04/04         49     -11       43  04/13
AVG. MAXIMUM    75.3               75.7    -0.4     77.5
AVG. MINIMUM    49.6               51.1    -1.5     53.0
MEAN            62.5               63.4    -0.9     65.2
DAYS MAX >= 90     1                2.6    -1.6        3
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MAX >= 45    30                                  30
DAYS MAX >= 120    0                                   0
DAYS MIN <= 32     0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        5.95   1965
 MINIMUM        0.00   1979
TOTALS          0.01               0.76   -0.75     0.26
DAILY AVG.      0.00               0.03   -0.03     0.01
DAYS >= .01        1                3.6    -2.6        3
DAYS >= .10        0                1.8    -1.8        1
DAYS >= .50        0                0.7    -0.7        0
DAYS >= 1.00       0                0.1    -0.1        0
DAYS >= %-5.2F     0                                   0
DAYS >= %-5.2F     0                                   0
GREATEST
 24 HR. TOTAL   0.01   04/13 TO 04/13               0.23  04/21 TO 04/22
 STORM TOTAL    0.01                                0.22
 (MM/DD(HH))            MM


DEGREE DAYS
HEATING TOTAL    116                105      11       67
 SINCE 7/1      1835               1250     585       MM
COOLING TOTAL     49                 57      -8       81
 SINCE 1/1        49                 93     -44       MM

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

WIND (MPH)
AVERAGE WIND SPEED              6.0
RESULTANT WIND SPEED/DIRECTION   5/250
HIGHEST WIND SPEED/DIRECTION    29/270    DATE  04/03
HIGHEST GUST SPEED/DIRECTION    39/270    DATE  04/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      1
HAZE                     11

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

$$