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000
CXUS56 KMTR 011549
CLMSTS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
849 AM PDT MON OCT 1 2012

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

...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             104   09/28/2010
                        09/19/2000
                        09/07/1904
 LOW               39   09/09/2012
                        09/30/2007
                        09/25/2005
HIGHEST            96   09/30                         98  09/20
                                                          09/19
LOWEST             39R  09/09                         46  09/17
AVG. MAXIMUM     82.0              83.2    -1.2     84.7
AVG. MINIMUM     46.1              49.3    -3.2     51.0
MEAN             64.1              66.3    -2.2     67.8
DAYS MAX >= 90      4               7.2    -3.2       11
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.50   2000
 MINIMUM         0.00   2002
TOTALS           0.00R                              0.03
DAILY AVG.       0.00                               0.00
DAYS >= .01         0                                  3
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.01   09/12 TO 09/13           09/25 TO 09/26
                                                          09/30 TO 09/30
                                                          09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL      42                                 10
 SINCE 7/1         80                                 32
COOLING TOTAL      19                                104
 SINCE 1/1        291                                321
.................................................

WIND (MPH)
AVERAGE WIND SPEED              3.6
RESULTANT WIND SPEED/DIRECTION   3/162
HIGHEST WIND SPEED/DIRECTION    15/180    DATE  09/11
HIGHEST GUST SPEED/DIRECTION    18/230    DATE  09/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      27     FOG W/VIS <= 1/4 MILE     13
HAZE                     10

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

$$