Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 011757
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
957 AM PST FRI FEB 1 2013

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              80   MM
 LOW               19   01/17/2012
HIGHEST            65   01/31                         71  01/27
                        01/25
                        01/20
LOWEST             22   01/13                         19  01/17
AVG. MAXIMUM     57.5                               61.1
AVG. MINIMUM     32.0                               32.7
MEAN             44.8                               46.9
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32     21                                 15
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           0.34              4.38   -4.04     4.00
DAILY AVG.       0.01                               0.13
DAYS >= .01         3                                  5
DAYS >= .10         2                                  4
DAYS >= .50         0                                  3
DAYS >= 1.00        0                                  2
GREATEST
 24 HR. TOTAL    0.17   01/23 TO 01/23           01/20 TO 01/21
                                                          01/31 TO 01/31
                                                          01/31 TO 01/31

DEGREE_DAYS
HEATING TOTAL     620                                553
 SINCE 7/1       1732                               1821
COOLING TOTAL       0                                  0
 SINCE 1/1          0                                  0
..................................................

WIND (MPH)
AVERAGE WIND SPEED              5.0
RESULTANT WIND SPEED/DIRECTION   2/060
HIGHEST WIND SPEED/DIRECTION    26/280    DATE  01/09
HIGHEST GUST SPEED/DIRECTION    36/270    DATE  01/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      6
HAZE                      4

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

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