203
CXUS56 KSGX 011249
CLMONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
449 AM PST WED JAN 01 2025
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...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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
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TEMPERATURE (F)
RECORD
HIGH 87 12/01/2021
12/01/2021
LOW 28 12/23/1998
12/22/1998
HIGHEST 85 12/18 69 16 84 12/05
LOWEST 39 12/12 44 -5 32 12/14
AVG. MAXIMUM 71.0 66.9 4.1 69.9
AVG. MINIMUM 46.2 43.6 2.6 47.0
MEAN 58.6 55.2 3.4 58.5
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MAX >= 45 31 31
DAYS MAX >= 120 0 0
DAYS MIN <= 32 0 0.8 -0.8 1
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.73 2010
MINIMUM 0.00 1963
TOTALS T 1.89 -1.89 0.98
DAILY AVG. T 0.06 -0.06 0.03
DAYS >= .01 0 5.6 -5.6 5
DAYS >= .10 0 3.4 -3.4 3
DAYS >= .50 0 1.1 -1.1 0
DAYS >= 1.00 0 0.6 -0.6 0
DAYS >= %-5.2F 0 0
DAYS >= %-5.2F 0 0
GREATEST
24 HR. TOTAL T 12/24 TO 12/24 0.36 12/22 TO 12/22
12/20 TO 12/20
12/22 TO 12/22
STORM TOTAL 0.00 0.36
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 196 304 -108 196
SINCE 7/1 347 463 -116 MM
COOLING TOTAL 5 2 3 2
SINCE 1/1 2032 1969 63 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 3.2
RESULTANT WIND SPEED/DIRECTION 1/270
HIGHEST WIND SPEED/DIRECTION 37/040 DATE 12/10
HIGHEST GUST SPEED/DIRECTION 61/050 DATE 12/10
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.48
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 18
NUMBER OF DAYS CLOUDY 5
AVERAGE RH (PERCENT) 52
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 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 14 FOG W/VIS <= 1/4 MILE 2
HAZE 20
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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