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000
CXUS56 KSEW 011033
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
333 AM PDT TUE AUG 01 2023

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JULY 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2023

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   07/05         MM      MM       95  07/29
                       07/15
                                                          07/30
                                                          07/31
LOWEST            54   07/10         MM      MM       51  07/04
                       07/12
                       07/13
AVG. MAXIMUM    80.1               77.4     2.7     80.1
AVG. MINIMUM    57.0               56.8     0.2     58.0
MEAN            68.5               67.1     1.4     69.0
DAYS MAX >= 90     2                1.8     0.2        6
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   2021
TOTALS          0.09               0.60   -0.51     0.18
DAILY AVG.      0.00               0.02   -0.02     0.01
DAYS >= .01        1                4.7    -3.7        5
DAYS >= .10        0                1.8    -1.8        0
DAYS >= .50        0                0.3    -0.3        0
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   0.09   07/24 TO 07/24

DEGREE DAYS
HEATING TOTAL      2                 31     -29       17
 SINCE 7/1         2                 36     -34       MM
COOLING TOTAL    119                 96      23      146
 SINCE 1/1       183                135      48       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    21/030    DATE  07/01
HIGHEST GUST SPEED/DIRECTION    28/230    DATE  07/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.38
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     57

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

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

$$