303
CXUS56 KMTR 010831
CLMSFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
131 AM PDT FRI MAY 01 2026

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2026

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           81   04/05                          78  04/13
LOWEST            46   04/03                          44  04/02
                                                          04/03
AVG. MAXIMUM    66.4               65.6     0.8     64.4
AVG. MINIMUM    51.9                                49.2
MEAN            59.1               57.3     1.8     56.8
DAYS MAX >= 90     0                                  MM
DAYS MAX <= 32     0                                  MM
DAYS MIN <= 32     0                                  MM
DAYS MIN <= 0      0                                  MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.36   1958
 MINIMUM        0.00   1977
TOTALS          3.12               1.36    1.76     0.37
DAILY AVG.      0.10               0.05    0.05     0.01
DAYS >= .01        8                                  MM
DAYS >= .10        6                                  MM
DAYS >= .50        3                                  MM
DAYS >= 1.00       1                                  MM
GREATEST
 24 HR. TOTAL   1.17   04/10 TO 04/11               0.32  04/01 TO 04/01


DEGREE DAYS
HEATING TOTAL    171                234     -63      238
 SINCE 7/1      1621               2209    -588       MM
COOLING TOTAL      3                  5      -2        0
 SINCE 1/1        37                  6      31       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.0
RESULTANT WIND SPEED/DIRECTION   8/270
HIGHEST WIND SPEED/DIRECTION    33/190    DATE  04/11
HIGHEST GUST SPEED/DIRECTION    50/190    DATE  04/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.56
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       3
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      0
HAZE                     17

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

$$