Climatological Report (Monthly)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
000
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.

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.