Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 011430
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
730 AM PDT SAT JUN 1 2013

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF MAY 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             101   MM
 LOW               35   05/22/2013
HIGHEST            91   05/20                         86  05/07
                                                          05/06
LOWEST             35R  05/22                         37  05/02
AVG. MAXIMUM     77.1                               74.2
AVG. MINIMUM     47.1                               45.5
MEAN             62.1                               59.9
DAYS MAX >= 90      2                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           0.08              0.82   -0.74     0.03
DAILY AVG.       0.00                               0.00
DAYS >= .01         3                                  2
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.05   05/06 TO 05/06           05/25 TO 05/25
                                                          05/31 TO 05/31
                                                          05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     101                                157
 SINCE 7/1       2845                               3104
COOLING TOTAL      17                                  7
 SINCE 1/1         20                                 14
..................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
RESULTANT WIND SPEED/DIRECTION   7/239
HIGHEST WIND SPEED/DIRECTION    33/360    DATE  05/01
HIGHEST GUST SPEED/DIRECTION    41/010    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     62

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

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

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