Climatological Report (Monthly) Issued by NWS
000
CXUS56 KSGX 011014
CLMONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
214 AM PST MON JAN 01 2024
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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 87 12/01/2021
12/01/2021
LOW 28 12/23/1998
12/22/1998
HIGHEST 84 12/05 69 15 81 12/25
LOWEST 40 12/10 44 -4 35 12/18
AVG. MAXIMUM 69.9 66.9 3.0 63.4
AVG. MINIMUM 47.3 43.6 3.7 43.5
MEAN 58.6 55.2 3.4 53.5
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 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.73 2010
MINIMUM 0.00 1963
TOTALS 0.98 1.89 -0.91 1.69
DAILY AVG. 0.03 0.06 -0.03 0.05
DAYS >= .01 5 5.6 -0.6 7
DAYS >= .10 3 3.4 -0.4 3
DAYS >= .50 0 1.1 -1.1 1
DAYS >= 1.00 0 0.6 -0.6 1
DAYS >= %-5.2F 0 0
DAYS >= %-5.2F 0 0
GREATEST
24 HR. TOTAL 0.36 12/22 TO 12/22 1.07 12/11 TO 12/11
12/20 TO 12/20
12/22 TO 12/22
STORM TOTAL 0.36 1.07
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 191 304 -113 351
SINCE 7/1 284 463 -179 MM
COOLING TOTAL 2 2 0 0
SINCE 1/1 1695 1969 -274 MM
FREEZE DATES
RECORD
EARLIEST 11/30/2004
LATEST 02/14/2006
EARLIEST 02/24
LATEST 02/20
................................................................
WIND (MPH)
AVERAGE WIND SPEED 3.1
RESULTANT WIND SPEED/DIRECTION 1/310
HIGHEST WIND SPEED/DIRECTION 20/290 DATE 12/18
HIGHEST GUST SPEED/DIRECTION 26/060 DATE 12/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.54
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 17
NUMBER OF DAYS CLOUDY 6
AVERAGE RH (PERCENT) 56
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 4
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 13 FOG W/VIS <= 1/4 MILE 5
HAZE 15
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$