weather.gov     
National Weather Service

Climatological Report (Monthly)
NWS Homepage
This page is being discontinued on March 12, 2014.
The same data is available at this site. Please update your bookmarks.
Thank you, and we apologize for the inconvenience.
Please send an email to SR-SRH.Webmaster@noaa.gov with any concerns.


Current Version
Previous Version:    01  02  03  04  05  06  07  08  09  10  11  
[Printable]
673
CXUS56 KSEW 011031
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
331 AM PDT MON SEP 1 2014

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2014

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            96   08/11        MM      MM       88  08/07
LOWEST             52   08/21        MM      MM       56  08/01
AVG. MAXIMUM     79.5              76.3     3.2     79.0
AVG. MINIMUM     58.8              55.9     2.9     59.9
MEAN             69.1              66.1     3.0     69.4
DAYS MAX >= 90      2               0.8     1.2        0
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           1.81              0.88    0.93     1.35
DAILY AVG.       0.06              0.03    0.03     0.04
DAYS >= .01         7               4.8     2.2        9
DAYS >= .10         3               2.3     0.7        2
DAYS >= .50         2               0.5     1.5        1
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    1.35   08/12 TO 08/13

DEGREE_DAYS
HEATING TOTAL       9                36     -27        6
 SINCE 7/1         23                85     -62       15
COOLING TOTAL     145                70      75      155
 SINCE 1/1        323               168     155      330
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.5
HIGHEST WIND SPEED/DIRECTION    18/060    DATE  08/12
HIGHEST GUST SPEED/DIRECTION    33/350    DATE  08/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

$$




U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE