Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 040213
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
709 PM PDT THU AUG 3 2017

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF JULY 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             106   MM
 LOW               43   MM
HIGHEST           103   07/16                         92  07/26
LOWEST             46   07/30                         44  07/22
AVG. MAXIMUM     82.0                               78.2
AVG. MINIMUM     54.4                               51.2
MEAN             68.2                               64.7
DAYS MAX >= 90      4                                  1
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS              T                 T    0.00     0.00
DAILY AVG.          T                               0.00
DAYS >= .01         0                                  0
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL       T   07/18 TO 07/18           07/31 TO 07/31
                        06/30 TO 07/01                    07/31 TO 07/31
                        07/01 TO 07/01                    07/31 TO 07/31

DEGREE_DAYS
HEATING TOTAL       8                                 37
 SINCE 7/1          8                                 37
COOLING TOTAL     111                                 34
 SINCE 1/1        268                                 96
..................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
RESULTANT WIND SPEED/DIRECTION   8/204
HIGHEST WIND SPEED/DIRECTION    26/200    DATE  07/24
HIGHEST GUST SPEED/DIRECTION    32/200    DATE  07/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           25
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      0
HAZE                     12

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

$$




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