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

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 20 21 22 23 24 25 26
000
CXUS56 KSEW 011049
CLMSEW


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
349 AM PDT TUE MAY 1 2018

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1986 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              89   04/18/2016
 LOW               31   04/04/2009
                        04/03/2008
                        04/01/1953
HIGHEST            75   04/26        MM      MM       67  04/21
                                                          04/16
LOWEST             35   04/02        MM      MM       37  04/09
AVG. MAXIMUM     58.1              58.5    -0.4     58.0
AVG. MINIMUM     43.2              42.5     0.7     43.7
MEAN             50.6              50.5     0.1     50.8
DAYS MAX >= 90      0               0.0     0.0        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         6.27   1993
 MINIMUM         0.64   2004
TOTALS           5.75              2.77    2.98     4.05
DAILY AVG.       0.19              0.09    0.10     0.14
DAYS >= .01        18              15.0     3.0       23
DAYS >= .10        13               8.2     4.8        9
DAYS >= .50         3               1.3     1.7        2
DAYS >= 1.00        1               0.1     0.9        0

SNOWFALL (INCHES)
TOTALS            0.0                                0.0
SINCE 7/1         4.0                                3.6
SNOWDEPTH AVG.      0                                  0
GREATEST
 SNOW DEPTH         0                                  0  MM

DEGREE_DAYS
HEATING TOTAL     422               435     -13      418
 SINCE 7/1       3992              4173    -181     4063
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

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


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       6
LIGHT RAIN               22     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      1
FOG                       9     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.

$$


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