185
CXUS56 KSEW 011031
CLMSEW

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
331 AM PDT TUE OCT 01 2024

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1894 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             93   09/03/1988
 LOW              40   09/30/2019
HIGHEST           89   09/05         MM      MM       86  09/02
LOWEST            46   09/30         MM      MM       44  09/30
AVG. MAXIMUM    72.7               71.3     1.4     71.1
AVG. MINIMUM    54.9               53.2     1.7     53.1
MEAN            63.8               62.3     1.5     62.1
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        5.01   2013
 MINIMUM        0.02   1991
TOTALS          1.02               1.74   -0.72     3.69
DAILY AVG.      0.03               0.06   -0.03     0.12
DAYS >= .01        8                8.8    -0.8       11
DAYS >= .10        4                4.6    -0.6        7
DAYS >= .50        1                1.0     0.0        3
DAYS >= 1.00       0                0.1    -0.1        1

DEGREE DAYS
HEATING TOTAL     79                106     -27      101
 SINCE 7/1       106                162     -56       MM
COOLING TOTAL     53                 24      29       23
 SINCE 1/1       342                210     132       MM
................................................................


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               12     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      1
HAZE                      0

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

$$