Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 010829
CLMSFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT THU JUN 01 2023

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 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             97   05/27/1984
 LOW              39   05/03/1950
HIGHEST           82   05/13                          87  05/24
LOWEST            50   05/02                          47  05/11
                       05/07
AVG. MAXIMUM    65.5               68.3    -2.8     68.6
AVG. MINIMUM    53.4                                51.4
MEAN            59.4               59.9    -0.5     60.0
DAYS MAX >= 90     0                                   0
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.81   1957
 MINIMUM        0.00   2008
TOTALS          0.72               0.48    0.24        T
DAILY AVG.      0.02               0.02    0.00        T
DAYS >= .01        5                                   0
DAYS >= .10        2                                   0
DAYS >= .50        0                                   0
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.49   05/02 TO 05/03                  T  05/08 TO 05/08


DEGREE DAYS
HEATING TOTAL    166                170      -4      156
 SINCE 7/1      2521               2377     144       MM
COOLING TOTAL      3                 14     -11        9
 SINCE 1/1         5                 20     -15       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.7
RESULTANT WIND SPEED/DIRECTION   9/270
HIGHEST WIND SPEED/DIRECTION    31/260    DATE  05/01
                                31/290          05/16
HIGHEST GUST SPEED/DIRECTION    42/250    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.64
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      0
HAZE                     12

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

$$


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