Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 021737
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
937 AM PST SAT DEC 2 2017

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2017...

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

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              85   MM
 LOW               23   11/29/2015
HIGHEST            70   11/21                         80  11/10
                                                          11/09
LOWEST             32   11/29                         33  11/24
                        11/18                             11/17
AVG. MAXIMUM     64.2                               67.3
AVG. MINIMUM     42.9                               44.1
MEAN             53.5                               55.7
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      2                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           2.78              2.56    0.22     0.94
DAILY AVG.       0.10                               0.03
DAYS >= .01         7                                  8
DAYS >= .10         6                                  4
DAYS >= .50         2                                  0
DAYS >= 1.00        1                                  0
GREATEST
 24 HR. TOTAL    1.40   11/16 TO 11/16           11/19 TO 11/20
                                                          11/30 TO 11/30
                                                          11/30 TO 11/30

DEGREE_DAYS
HEATING TOTAL     336                                273
 SINCE 7/1        528                                504
COOLING TOTAL       0                                  0
 SINCE 1/1        530                                186
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.1
RESULTANT WIND SPEED/DIRECTION   1/171
HIGHEST WIND SPEED/DIRECTION    31/260    DATE  11/26
HIGHEST GUST SPEED/DIRECTION    37/250    DATE  11/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       6
LIGHT RAIN               10     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     10
HAZE                      2

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

$$


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