Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KSEW 011745 CCA
CLMSEA

CLIMATE REPORT...CORRECTED HIGHEST WIND GUST
NATIONAL WEATHER SERVICE SEATTLE WA
1045 AM PDT THU JUN 1 2017

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              93   05/21/1963
 LOW               28   05/01/1954
HIGHEST            86   05/28        MM      MM       87  05/02
                        05/27
LOWEST             43   05/12        MM      MM       46  05/09
                        05/06
                        05/02
AVG. MAXIMUM     67.0              64.7     2.3     68.8
AVG. MINIMUM     48.8              47.3     1.5     50.7
MEAN             57.9              56.0     1.9     59.8
DAYS MAX >= 90      0               0.1    -0.1        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         4.76   1948
 MINIMUM         0.12   1992
TOTALS           2.28              1.94    0.34     0.94
DAILY AVG.       0.07              0.06    0.01     0.03
DAYS >= .01        14              12.0     2.0        7
DAYS >= .10         9               6.0     3.0        3
DAYS >= .50         0               0.8    -0.8        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.47   05/11 TO 05/11

DEGREE_DAYS
HEATING TOTAL     230               285     -55      167
 SINCE 7/1       4407              4553    -146     3743
COOLING TOTAL      19                 6      13       12
 SINCE 1/1         19                 6      13       26
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.0
HIGHEST WIND SPEED/DIRECTION    25/210    DATE  05/05
HIGHEST GUST SPEED/DIRECTION    33/230    DATE  05/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      3
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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