Climatological Report (Monthly)
Issued by NWS

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485
CXUS56 KMTR 010836
CLMAPC

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
136 AM PDT SUN NOV 01 2026

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            101   MM
 LOW              32   10/31/2019
                       10/27/2011
                       01/01/2000
HIGHEST           96   10/03                          88  10/07
LOWEST            38   10/13                          40  10/12
                       10/27
                       10/28
AVG. MAXIMUM    76.6                                73.1
AVG. MINIMUM    46.8                                48.6
MEAN            61.7                                60.9
DAYS MAX >= 90     5                                   0
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
TOTALS          0.36               0.93   -0.57     1.31
DAILY AVG.      0.01                                0.04
DAYS >= .01        2                                   6
DAYS >= .10        1                                   1
DAYS >= .50        0                                   1
DAYS >= 1.00       0                                   1
GREATEST
 24 HR. TOTAL   0.34   10/22 TO 10/22               1.02  10/13 TO 10/14
                       10/21 TO 10/22
                       10/22 TO 10/22


DEGREE DAYS
HEATING TOTAL    147                                 129
 SINCE 7/1       228                                  MM
COOLING TOTAL     54                                  10
 SINCE 1/1       285                                  MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.1
RESULTANT WIND SPEED/DIRECTION   3/220
HIGHEST WIND SPEED/DIRECTION    24/020    DATE  10/13
HIGHEST GUST SPEED/DIRECTION    32/040    DATE  10/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.12
NUMBER OF DAYS FAIR           27
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                2     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                      3

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

$$