605
CXUS56 KMTR 010826
CLMSFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
126 AM PDT THU MAY 01 2025

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2025

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           78   04/13                          76  04/17
LOWEST            44   04/02                          44  04/04
                       04/03
                                                          04/05
AVG. MAXIMUM    65.3               65.6    -0.3     65.2
AVG. MINIMUM    49.5                                50.2
MEAN            57.4               57.3     0.1     57.7
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          0.33               1.36   -1.03     0.77
DAILY AVG.      0.02               0.05   -0.03     0.03
DAYS >= .01        2                                   3
DAYS >= .10        1                                   2
DAYS >= .50        0                                   1
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.32   04/01 TO 04/01               0.50  04/04 TO 04/04


DEGREE DAYS
HEATING TOTAL    146                234     -88      212
 SINCE 7/1      1995               2209    -214       MM
COOLING TOTAL      0                  5      -5        0
 SINCE 1/1         3                  6      -3       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
RESULTANT WIND SPEED/DIRECTION   9/280
HIGHEST WIND SPEED/DIRECTION    36/270    DATE  04/11
HIGHEST GUST SPEED/DIRECTION    45/290    DATE  04/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.47
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                     13

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

$$