Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 011620
CLMSTS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
816 AM PST THU FEB 1 2018

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

...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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              82   01/12/2009
 LOW               20   01/15/2007
HIGHEST            70   01/31                         64  01/30
LOWEST             31   01/21                         26  01/06
AVG. MAXIMUM     58.7              56.7     2.0     55.6
AVG. MINIMUM     40.4              36.6     3.8     37.5
MEAN             49.5              46.7     2.8     46.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      3               9.3    -6.3       10
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.96   2017
 MINIMUM         0.10   2014
TOTALS           6.65                              18.96
DAILY AVG.       0.21                               0.61
DAYS >= .01        14                                 17
DAYS >= .10        10                                 12
DAYS >= .50         3                                  9
DAYS >= 1.00        1                                  8
GREATEST
 24 HR. TOTAL    3.27   01/08 TO 01/08           01/07 TO 01/08

DEGREE_DAYS
HEATING TOTAL     472                                566
 SINCE 7/1       1485                               1646
COOLING TOTAL       0                                  0
 SINCE 1/1          0                                  0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              2.9
RESULTANT WIND SPEED/DIRECTION   1/304
HIGHEST WIND SPEED/DIRECTION    21/310    DATE  01/09
HIGHEST GUST SPEED/DIRECTION    27/190    DATE  01/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     85

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

$$




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