Climatological Report (Monthly)
Issued by NWS Seattle/Tacoma, WA

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CXUS56 KSEW 011032
CLMSEW


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
332 AM PDT WED NOV 1 2017

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1986 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              87   10/01/1987
 LOW               29   10/30/1991
HIGHEST            72   10/05        MM      MM       68  10/12
                                                          10/08
                                                          10/05
LOWEST             36   10/31        MM      MM       39  10/12
AVG. MAXIMUM     61.6              60.1     1.5     61.7
AVG. MINIMUM     44.8              46.5    -1.7     49.1
MEAN             53.2              53.3    -0.1     55.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.1    -0.1        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.30   2016
 MINIMUM         0.28   1987
TOTALS           3.72              3.41    0.31    10.30
DAILY AVG.       0.12              0.11    0.01     0.33
DAYS >= .01        14              13.2     0.8       27
DAYS >= .10         8               7.8     0.2       18
DAYS >= .50         2               2.0     0.0        7
DAYS >= 1.00        1               0.3     0.7        4

SNOWFALL (INCHES)
TOTALS            0.0                                0.0
SINCE 7/1         0.0                                0.0
SNOWDEPTH AVG.      0                                  0
GREATEST
 SNOW DEPTH         0                                  0  MM

DEGREE_DAYS
HEATING TOTAL     359               363      -4      289
 SINCE 7/1        433               548    -115      409
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        345               176     169      260
.................................................................

WIND (MPH)
HIGHEST GUST SPEED/DIRECTION    MM        DATE   MM


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       6
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

$$


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