Climatological Report (Monthly)
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000
CXUS56 KMTR 030538
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1033 PM PDT THU NOV 2 2017

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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              98   MM
 LOW               32   10/27/2011
HIGHEST            92   10/24                         91  10/08
LOWEST             35   10/13                         41  10/06
                                                          10/05
                                                          10/01
AVG. MAXIMUM     77.9                               73.2
AVG. MINIMUM     43.2                               48.2
MEAN             60.5                               60.7
DAYS MAX >= 90      2                                  1
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           0.19              0.97   -0.78     3.81
DAILY AVG.       0.01                               0.12
DAYS >= .01         1                                 12
DAYS >= .10         1                                  8
DAYS >= .50         0                                  3
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.19   10/19 TO 10/19           10/27 TO 10/28
                                                          10/30 TO 10/30
                                                          10/30 TO 10/30

DEGREE_DAYS
HEATING TOTAL     145                                132
 SINCE 7/1        192                                231
COOLING TOTAL      16                                  5
 SINCE 1/1        530                                186
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.6
RESULTANT WIND SPEED/DIRECTION   2/213
HIGHEST WIND SPEED/DIRECTION    36/020    DATE  10/08
HIGHEST GUST SPEED/DIRECTION    45/020    DATE  10/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     59

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      2
HAZE                     14

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

$$



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