Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 010829
CLMAPC

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT THU JUN 01 2023

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            101   MM
 LOW              32   05/10/2022
HIGHEST           86   05/13                          93  05/24
LOWEST            41   05/07                          32  05/10
                                                          05/11
AVG. MAXIMUM    68.8                                77.2
AVG. MINIMUM    50.2                                45.3
MEAN            59.5                                61.3
DAYS MAX >= 90     0                                   2
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   2
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
TOTALS          0.70               0.80   -0.10     0.00
DAILY AVG.      0.02                                0.00
DAYS >= .01        6                                   0
DAYS >= .10        3                                   0
DAYS >= .50        0                                   0
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.35   05/01 TO 05/02               0.00  04/30 TO 04/30


DEGREE DAYS
HEATING TOTAL    162                                 135
 SINCE 7/1      2876                                  MM
COOLING TOTAL      6                                  26
 SINCE 1/1         9                                  MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
RESULTANT WIND SPEED/DIRECTION   7/230
HIGHEST WIND SPEED/DIRECTION    26/200    DATE  05/23
HIGHEST GUST SPEED/DIRECTION    32/200    DATE  05/14
                                32/200          05/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR            9
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       4
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      3
HAZE                      6

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

$$


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