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 17 18 19
000
CXUS56 KSEW 011030
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
230 AM PST THU DEC 1 2016

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 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              74   11/03/2010
                        11/04/1949
 LOW                6   11/15/1955
HIGHEST            70   11/08        MM      MM       60  11/06
LOWEST             39   11/18        MM      MM       25  11/30
AVG. MAXIMUM     56.0              50.9     5.1     49.4
AVG. MINIMUM     45.7              40.0     5.7     38.2
MEAN             50.9              45.4     5.5     43.8
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.3    -0.3        0
DAYS MIN <= 32      0               2.6    -2.6        7
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        15.63   2006
 MINIMUM         0.74   1996
TOTALS           6.48              6.57   -0.09     8.37
DAILY AVG.       0.22              0.22    0.00     0.28
DAYS >= .01        22              18.4     3.6       20
DAYS >= .10        16              13.2     2.8       11
DAYS >= .50         3               4.1    -1.1        6
DAYS >= 1.00        2               1.2     0.8        4
GREATEST
 24 HR. TOTAL    1.42   11/05 TO 11/06

SNOWFALL (INCHES)
RECORDS
 TOTAL           17.5   1985
TOTALS            0.0               1.2    -1.2      0.0
SINCE 7/1         0.0               1.2    -1.2      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0   MM                             0
 24 HR TOTAL      0.0   11/30 TO 11/30               0.0

DEGREE_DAYS
HEATING TOTAL     415               586    -171      626
 SINCE 7/1        851              1183    -332     1011
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        291               189     102      474
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
HIGHEST WIND SPEED/DIRECTION    32/210    DATE  11/12
HIGHEST GUST SPEED/DIRECTION    41/200    DATE  11/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         23

AVERAGE RH (PERCENT)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       7
LIGHT RAIN               23     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      18     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.