National Weather Service Text Product
AFOS product CLMONT
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLMONT
Product Timestamp: 2025-09-01 09:44 UTC
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332
CXUS56 KSGX 010944
CLMONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
244 AM PDT MON SEP 01 2025
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 112 08/31/2017
LOW 54 08/11/2009
HIGHEST 103 08/07 95 8 107 08/05
08/21
08/22
LOWEST 61 08/01 63 -2 60 08/24
08/02
08/03
08/29
AVG. MAXIMUM 95.2 94.9 0.3 95.4
AVG. MINIMUM 67.0 65.2 1.8 66.7
MEAN 81.1 80.1 1.0 81.0
DAYS MAX >= 90 27 23.8 3.2 26
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MAX >= 45 31 31
DAYS MAX >= 120 0 0
DAYS MIN <= 32 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 1.92 2023
MINIMUM 0.00 2019
TOTALS T 0.03 -0.03 T
DAILY AVG. T 0.00 -0.00 T
DAYS >= .01 0 0.3 -0.3 0
DAYS >= .10 0 0.1 -0.1 0
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 08/23 TO 08/23 T 08/01 TO 08/01
STORM TOTAL 0.00 0.00
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 0 0 0 0
SINCE 7/1 0 0 0 MM
COOLING TOTAL 506 467 39 508
SINCE 1/1 1389 1373 16 MM
FREEZE DATES
RECORD
EARLIEST 11/30/2004
LATEST 02/14/2006
EARLIEST 02/24
LATEST 02/20
................................................................
WIND (MPH)
AVERAGE WIND SPEED 6.1
RESULTANT WIND SPEED/DIRECTION 5/240
HIGHEST WIND SPEED/DIRECTION 21/260 DATE 08/25
21/260 08/27
21/270 08/30
HIGHEST GUST SPEED/DIRECTION 28/240 DATE 08/22
28/300 08/24
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.24
NUMBER OF DAYS FAIR 24
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 50
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 8 FOG W/VIS <= 1/4 MILE 0
HAZE 20
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$