621
CDUS46 KMTR 190837
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
137 AM PDT TUE SEP 19 2023
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 2023
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 74 2:28 PM 93 2009 75 -1 70
MINIMUM 61 11:59 PM 46 1955 56 5 60
AVERAGE 68 65 3 65
PRECIPITATION (IN)
YESTERDAY 0.00 2.29 1959 0.00 0.00 0.10
MONTH TO DATE T 0.02 -0.02 0.10
SINCE OCT 1 31.42 19.59 11.83 18.28
SINCE JAN 1 20.17 12.62 7.55 2.00
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 0 20 -20 6
SINCE SEP 1 0 20 -20 6
SINCE JUL 1 47 122 -75 67
COOLING
YESTERDAY 3 2 1 0
MONTH TO DATE 31 36 -5 86
SINCE SEP 1 31 36 -5 86
SINCE JAN 1 170 146 24 239
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 9.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 2:00 AM
LOWEST 53 2:00 PM
AVERAGE 69
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THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 2000
MINIMUM TEMPERATURE (F) 56 46 1947
1954
SUNRISE AND SUNSET
SEPTEMBER 19 2023.....SUNRISE 6:55 AM PDT SUNSET 7:11 PM PDT
SEPTEMBER 20 2023.....SUNRISE 6:56 AM PDT SUNSET 7:10 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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