Climatological Report (Monthly)
Issued by NWS

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752
CXUS56 KMTR 010829
CLMSFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT FRI AUG 01 2025

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JULY 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            105   07/17/1988
 LOW              44   07/29/1951
HIGHEST           76   07/10                          88  07/02
LOWEST            53   07/01                          54  07/19
                       07/07
                                                          07/22
                                                          07/26
AVG. MAXIMUM    69.2               72.6    -3.4     73.2
AVG. MINIMUM    56.0                                55.8
MEAN            62.6               64.0    -1.4     64.5
DAYS MAX >= 90     0                                   0
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        0.35   1977
 MINIMUM        0.00   2024
TOTALS             T               0.00    0.00     0.00
DAILY AVG.         T               0.00    0.00     0.00
DAYS >= .01        0                                   0
DAYS >= .10        0                                   0
DAYS >= .50        0                                   0
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL      T   07/21 TO 07/21               0.00  06/30 TO 06/30
                       07/22 TO 07/22
                       07/27 TO 07/27


DEGREE DAYS
HEATING TOTAL     69                 58      11       50
 SINCE 7/1        69                 62       7       MM
COOLING TOTAL      1                 26     -25       43
 SINCE 1/1         8                 69     -61       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              12.3
RESULTANT WIND SPEED/DIRECTION  11/280
HIGHEST WIND SPEED/DIRECTION    32/280    DATE  07/04
HIGHEST GUST SPEED/DIRECTION    42/260    DATE  07/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.51
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             19
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      24     FOG W/VIS <= 1/4 MILE      0
HAZE                     30

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

$$