Climatological Report (Daily)
Issued by NWS

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263
CDUS46 KMTR 210826
CLIHWD

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
126 AM PDT MON SEP 21 2026

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

...THE HAYWARD AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         64   3:30 PM  96    2015  77    -13       75
  MINIMUM         58   7:56 AM  52    2007  57      1       60
  AVERAGE         61                        67     -6       68

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.00
  MONTH TO DATE    0.12                                      0.09
  SINCE OCT 1     20.65                                     14.73
  SINCE JAN 1     11.92                                      7.52

DEGREE DAYS
 HEATING
  YESTERDAY        4                                         0
  MONTH TO DATE    6                                         1
  SINCE SEP 1      6                                         1
  SINCE JUL 1     39                                        41

 COOLING
  YESTERDAY        0                                         3
  MONTH TO DATE   57                                        71
  SINCE SEP 1     57                                        71
  SINCE JAN 1    270                                       227
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION   W (280)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     8.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           2:00 AM
 LOWEST     72           2:00 PM
 AVERAGE    81

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


THE HAYWARD AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        97      2003
 MINIMUM TEMPERATURE (F)   57        53      2004


SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE   6:56 AM PDT   SUNSET   7:07 PM PDT
SEPTEMBER 22 2026.....SUNRISE   6:56 AM PDT   SUNSET   7:05 PM PDT


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




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