Climatological Report (Monthly)
Issued by NWS

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CXUS56 KSEW 011050
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
350 AM PDT THU AUG 1 2019

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JULY 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             103   07/29/2009
 LOW               43   07/02/1954
                        07/24/1953
                        07/04/1949
HIGHEST            91   07/21        MM      MM       94  07/29
LOWEST             55   07/19        MM      MM       50  07/03
                        07/04
AVG. MAXIMUM     76.5              75.8     0.7     82.8
AVG. MINIMUM     58.5              55.6     2.9     58.5
MEAN             67.5              65.7     1.8     70.7
DAYS MAX >= 90      1               1.4    -0.4        7
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         2.39   1983
 MINIMUM            T   2017
                        2013
                        1960
TOTALS           1.15              0.70    0.45     0.05
DAILY AVG.       0.04              0.02    0.02     0.00
DAYS >= .01         7               5.0     2.0        2
DAYS >= .10         5               2.3     2.7        0
DAYS >= .50         0               0.2    -0.2        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.43   07/02 TO 07/02

DEGREE_DAYS
HEATING TOTAL      11                49     -38        9
 SINCE 7/1         11                49     -38        9
COOLING TOTAL      95                71      24      193
 SINCE 1/1        154                98      56      246
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.8
HIGHEST WIND SPEED/DIRECTION    21/030    DATE  07/18
HIGHEST GUST SPEED/DIRECTION    28/200    DATE  07/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  3
  0
  0
  0
  0
  0
HAZE                      4

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

$$


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