365
CXUS56 KSGX 010931
CLMONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
231 AM PDT TUE OCT 01 2024
...............................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 118 09/05/2020
LOW 51 09/27/2013
HIGHEST 114 09/06 91 23 98 09/08
09/09
LOWEST 55 09/17 62 -7 58 09/22
09/24
AVG. MAXIMUM 90.9 91.3 -0.4 83.7
AVG. MINIMUM 64.3 63.8 0.5 63.2
MEAN 77.6 77.6 -0.0 73.5
DAYS MAX >= 90 13 17.5 -4.5 7
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 3.54 1963
MINIMUM 0.00 2020
TOTALS T 0.10 -0.10 0.24
DAILY AVG. T 0.00 -0.00 0.01
DAYS >= .01 0 0.7 -0.7 5
DAYS >= .10 0 0.3 -0.3 1
DAYS >= .50 0 0.0 0.0 0
DAYS >= 1.00 0 0.0 0.0 0
DAYS >= %-5.2F 0 0
DAYS >= %-5.2F 0 0
GREATEST
24 HR. TOTAL T 09/20 TO 09/20 0.18 09/01 TO 09/02
09/16 TO 09/16
09/20 TO 09/20
STORM TOTAL 0.00 0.13
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 0 1 -1 1
SINCE 7/1 0 0 0 MM
COOLING TOTAL 386 378 8 263
SINCE 1/1 1760 1751 9 MM
FREEZE DATES
RECORD
EARLIEST 11/30/2004
LATEST 02/14/2006
EARLIEST 02/24
LATEST 02/20
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WIND (MPH)
AVERAGE WIND SPEED 5.4
RESULTANT WIND SPEED/DIRECTION 4/250
HIGHEST WIND SPEED/DIRECTION 29/040 DATE 09/08
HIGHEST GUST SPEED/DIRECTION 43/080 DATE 09/08
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.29
NUMBER OF DAYS FAIR 18
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 55
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 1 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 21
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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