Climatological Report (Monthly)
Issued by NWS

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CXUS56 KSEW 011034
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
333 AM PDT THU SEP 1 2016

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              99   08/09/1981
                        08/09/1960
 LOW               44   08/14/1955
                        08/13/1955
                        08/27/1952
HIGHEST            95   08/19        MM      MM       92  08/01
LOWEST             53   08/29        MM      MM       54  08/25
                        08/01                             08/24
                                                          08/22
AVG. MAXIMUM     79.5              76.3     3.2     79.0
AVG. MINIMUM     57.9              55.9     2.0     58.5
MEAN             68.7              66.1     2.6     68.7
DAYS MAX >= 90      6               0.8     5.2        1
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         4.59   1975
 MINIMUM            T   2012
TOTALS           0.17              0.88   -0.71     3.28
DAILY AVG.       0.01              0.03   -0.02     0.11
DAYS >= .01         3               4.8    -1.8        6
DAYS >= .10         1               2.3    -1.3        4
DAYS >= .50         0               0.5    -0.5        2
DAYS >= 1.00        0               0.1    -0.1        2
GREATEST
 24 HR. TOTAL    0.13   08/02 TO 08/02

DEGREE_DAYS
HEATING TOTAL      10                36     -26       10
 SINCE 7/1         21                85     -64       12
COOLING TOTAL     133                70      63      132
 SINCE 1/1        288               168     120      460
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
HIGHEST WIND SPEED/DIRECTION    23/240    DATE  08/27
HIGHEST GUST SPEED/DIRECTION    29/230    DATE  08/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

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

$$


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