Climatological Report (Daily)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CDUS46 KMTR 190830
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT TUE SEP 19 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 18 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         80    229 PM  98    2016  80      0       98
  MINIMUM         53    405 AM  38    2008  49      4       50
  AVERAGE         67                        64      3       74

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.00
  MONTH TO DATE    0.02                                      0.00
  SINCE OCT 1     37.13                                     18.86
  SINCE JAN 1     28.18                                     14.67

DEGREE DAYS
 HEATING
  YESTERDAY        0                                         0
  MONTH TO DATE   10                                        26
  SINCE SEP 1     10                                        26
  SINCE JUL 1     20                                        83

 COOLING
  YESTERDAY        2                                         9
  MONTH TO DATE  117                                        20
  SINCE SEP 1    117                                        20
  SINCE JAN 1    499                                       139
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   W (250)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION    SW (230)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    12.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           500 AM
 LOWEST     42           200 PM
 AVERAGE    70

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80        97      2002
 MINIMUM TEMPERATURE (F)   49        41      2008


SUNRISE AND SUNSET
SEPTEMBER 19 2017.....SUNRISE   655 AM PDT   SUNSET   710 PM PDT
SEPTEMBER 20 2017.....SUNRISE   655 AM PDT   SUNSET   709 PM PDT


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




$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.