Climatological Report (Monthly) Issued by NWS
000
CXUS56 KMTR 010853
CLMSFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1253 AM PST MON JAN 01 2024
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...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 75 12/12/1958
12/04/1958
12/02/1958
LOW 24 12/09/1972
HIGHEST 66 12/05 64 12/30
LOWEST 43 12/09 38 12/13
12/16
12/18
AVG. MAXIMUM 61.9 58.2 3.7 56.2
AVG. MINIMUM 50.0 44.6
MEAN 55.9 51.4 4.5 50.4
DAYS MAX >= 90 0 0
DAYS MAX <= 32 0 0
DAYS MIN <= 32 0 0
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 12.30 1955
MINIMUM 0.01 1989
TOTALS 3.91 4.14 -0.23 9.66
DAILY AVG. 0.13 0.13 -0.00 0.31
DAYS >= .01 11 13
DAYS >= .10 7 11
DAYS >= .50 3 6
DAYS >= 1.00 1 3
GREATEST
24 HR. TOTAL 1.32 12/19 TO 12/20 3.92 12/30 TO 12/31
DEGREE DAYS
HEATING TOTAL 273 422 -149 450
SINCE 7/1 496 927 -431 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 280 201 79 MM
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WIND (MPH)
AVERAGE WIND SPEED 5.5
RESULTANT WIND SPEED/DIRECTION 1/200
HIGHEST WIND SPEED/DIRECTION 28/280 DATE 12/22
HIGHEST GUST SPEED/DIRECTION 36/200 DATE 12/19
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.62
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 10
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 6
LIGHT RAIN 13 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 21 FOG W/VIS <= 1/4 MILE 4
HAZE 25
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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