Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 010845
CLMSFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
145 AM PDT MON MAY 01 2023

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 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             92   04/08/1989
                       04/29/1981
 LOW              36   04/27/1955
HIGHEST           83   04/27                          89  04/07
LOWEST            42   04/04                          45  04/13
                                                          04/18
AVG. MAXIMUM    63.9               65.6    -1.7     65.6
AVG. MINIMUM    48.7                                49.4
MEAN            56.3               57.3    -1.0     57.5
DAYS MAX >= 90     0                                   0
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.36   1958
 MINIMUM        0.00   1977
TOTALS          0.10               1.36   -1.26     0.97
DAILY AVG.      0.00               0.05   -0.05     0.03
DAYS >= .01        2                                   6
DAYS >= .10        0                                   4
DAYS >= .50        0                                   0
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.07   04/07 TO 04/07               0.40  04/16 TO 04/16


DEGREE DAYS
HEATING TOTAL    256                234      22      226
 SINCE 7/1      2355               2209     146       MM
COOLING TOTAL      2                  5      -3        9
 SINCE 1/1         2                  6      -4       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              13.7
RESULTANT WIND SPEED/DIRECTION  12/290
HIGHEST WIND SPEED/DIRECTION    40/300    DATE  04/03
HIGHEST GUST SPEED/DIRECTION    57/290    DATE  04/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.45
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     67

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                      11     FOG W/VIS <= 1/4 MILE      0
HAZE                     28

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

$$


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