478
CXUS56 KMTR 011730
CLMSTS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
930 AM PST SAT FEB 01 2025

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

...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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             82   01/12/2009
 LOW              20   01/15/2007
HIGHEST           78   01/09                          73  01/29
LOWEST            28   01/22                          31  01/07
                       01/28
                                                          01/11
AVG. MAXIMUM    62.6               57.9     4.7     60.0
AVG. MINIMUM    35.9               37.5    -1.6     42.7
MEAN            49.3               47.7     1.6     51.3
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     9                9.1    -0.1        3
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       18.96   2017
 MINIMUM        0.10   2014
TOTALS          1.11                                9.57
DAILY AVG.      0.04                                0.31
DAYS >= .01        3                                  15
DAYS >= .10        2                                  13
DAYS >= .50        1                                   5
DAYS >= 1.00       0                                   3
GREATEST
 24 HR. TOTAL   0.63   01/31 TO 01/31               2.48  01/21 TO 01/22


DEGREE DAYS
HEATING TOTAL    478                                 390
 SINCE 7/1      1426                                  MM
COOLING TOTAL      0                                   0
 SINCE 1/1         0                                  MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              3.8
RESULTANT WIND SPEED/DIRECTION   1/350
HIGHEST WIND SPEED/DIRECTION    29/020    DATE  01/07
HIGHEST GUST SPEED/DIRECTION    38/030    DATE  01/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.33
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       2
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      21     FOG W/VIS <= 1/4 MILE     13
HAZE                      2

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

$$