Climatological Report (Monthly)
Issued by NWS

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CXUS56 KSEW 011034
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
334 AM PDT WED MAY 1 2019

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2019

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               29   04/05/1975
                        04/01/1953
                        04/07/1952
HIGHEST            70   04/01        MM      MM       82  04/26
LOWEST             37   04/28        MM      MM       36  04/02
AVG. MAXIMUM     59.3              58.5     0.8     58.6
AVG. MINIMUM     45.6              42.2     3.4     44.1
MEAN             52.4              50.3     2.1     51.3
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         6.53   1991
 MINIMUM         0.33   1956
TOTALS           3.53              2.71    0.82     5.69
DAILY AVG.       0.12              0.09    0.03     0.19
DAYS >= .01        17              14.3     2.7       16
DAYS >= .10        12               7.5     4.5       12
DAYS >= .50         1               1.3    -0.3        4
DAYS >= 1.00        0               0.2    -0.2        1
GREATEST
 24 HR. TOTAL    0.65   04/12 TO 04/12

SNOWFALL (INCHES)
RECORDS
 TOTAL            2.3   1972
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1        21.0               6.8    14.2      4.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0   MM                             0
 24 HR TOTAL      0.0   04/30 TO 04/30               0.0

DEGREE_DAYS
HEATING TOTAL     370               440     -70      406
 SINCE 7/1       3860              4268    -408     4011
COOLING TOTAL       0                 0       0        2
 SINCE 1/1          6                 0       6        2
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.6
HIGHEST WIND SPEED/DIRECTION    30/210    DATE  04/06
HIGHEST GUST SPEED/DIRECTION    42/210    DATE  04/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         20

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  5
  0
  0
  0
  0
  0
HAZE                      1

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

$$


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