177
CXUS56 KMTR 010836
CLMAPC

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
136 AM PDT SUN JUN 01 2025

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF MAY 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025

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           90   05/30                          85  05/09
                                                          05/30
LOWEST            42   05/04                          38  05/05
                       05/14
                                                          05/06
AVG. MAXIMUM    75.1                                72.9
AVG. MINIMUM    47.1                                47.3
MEAN            61.1                                60.1
DAYS MAX >= 90     1                                   0
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
TOTALS          0.20               0.80   -0.60     0.69
DAILY AVG.      0.01                                0.02
DAYS >= .01        1                                   1
DAYS >= .10        1                                   1
DAYS >= .50        0                                   1
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.20   05/12 TO 05/12               0.69  05/04 TO 05/04


DEGREE DAYS
HEATING TOTAL    130                                 153
 SINCE 7/1      2651                                  MM
COOLING TOTAL     15                                  10
 SINCE 1/1        17                                  MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.5
RESULTANT WIND SPEED/DIRECTION   7/230
HIGHEST WIND SPEED/DIRECTION    33/020    DATE  05/05
HIGHEST GUST SPEED/DIRECTION    44/360    DATE  05/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.17
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

$$