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000
CXUS56 KMTR 011549
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
849 AM PDT MON OCT 1 2012

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102   MM
 LOW               41   09/21/2012
HIGHEST            93   09/30                         97  09/20
LOWEST             41R  09/21                         44  09/26
AVG. MAXIMUM     77.3                               81.4
AVG. MINIMUM     47.8                               50.8
MEAN             62.6                               66.1
DAYS MAX >= 90      1                                  8
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           0.00              0.32   -0.32     0.01
DAILY AVG.       0.00                               0.00
DAYS >= .01         0                                  1
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.01   09/14 TO 09/15           09/25 TO 09/25
                                                          09/30 TO 09/30
                                                          09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL      80                                 24
 SINCE 7/1        135                                 81
COOLING TOTAL      15                                 65
 SINCE 1/1        168                                161
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.0
RESULTANT WIND SPEED/DIRECTION   5/215
HIGHEST WIND SPEED/DIRECTION    59/040    DATE  09/01
HIGHEST GUST SPEED/DIRECTION    26/210    DATE  09/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           25
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      18     FOG W/VIS <= 1/4 MILE      5
HAZE                      3

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

$$