Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 021802
CLMAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1102 AM PDT WED MAY 2 2018

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              91   MM
 LOW               32   04/04/2015
                        04/06/2012
                        04/11/1967
HIGHEST            79   04/23                         81  04/30
                                                          04/29
LOWEST             34   04/19                         36  04/14
                        04/17
AVG. MAXIMUM     66.6                               69.2
AVG. MINIMUM     43.0                               46.2
MEAN             54.6                               57.7
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           3.76              1.04    2.72     3.11
DAILY AVG.       0.13                               0.10
DAYS >= .01         6                                 11
DAYS >= .10         6                                  6
DAYS >= .50         1                                  2
DAYS >= 1.00        1                                  1
GREATEST
 24 HR. TOTAL    2.37   04/06 TO 04/06           04/06 TO 04/07
                                                          04/30 TO 04/30EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          04/30 TO 04/30EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL     264                                214
 SINCE 7/1       2722                               2362
COOLING TOTAL       0                                  2
 SINCE 1/1          0                                  2
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
RESULTANT WIND SPEED/DIRECTION   5/245
HIGHEST WIND SPEED/DIRECTION    30/250    DATE  04/11
HIGHEST GUST SPEED/DIRECTION    38/260    DATE  04/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  5
  0
  0
  0
  0
  4
HAZE                      3

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

$$



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