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000
CXUS56 KMTR 010900
CLMSFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
200 AM PDT SUN OCT 01 2023

...................................

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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            104   09/02/2017
                       09/01/2017
                       02/13/2353849
 LOW              41   09/30/1950
HIGHEST           77   09/25                          97  09/05
                       09/26
LOWEST            55   09/10                          55  09/01
                       09/23
                       09/24
                                                          09/02
AVG. MAXIMUM    73.3               74.8    -1.5     77.1
AVG. MINIMUM    58.9                                59.2
MEAN            66.1               65.3     0.8     68.2
DAYS MAX >= 90     0                                   3
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        2.30   1959
 MINIMUM        0.00   2021
TOTALS          0.03               0.07   -0.04     0.27
DAILY AVG.      0.00               0.00   -0.00     0.01
DAYS >= .01        2                                   3
DAYS >= .10        0                                   2
DAYS >= .50        0                                   0
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.02   09/30 TO 09/30               0.16  09/21 TO 09/21


DEGREE DAYS
HEATING TOTAL      6                 46     -40       13
 SINCE 7/1        53                146     -93       MM
COOLING TOTAL     48                 56      -8      114
 SINCE 1/1       187                166      21       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
RESULTANT WIND SPEED/DIRECTION   8/280
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  09/27
HIGHEST GUST SPEED/DIRECTION    43/270    DATE  09/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.39
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                     22

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$