841
CXUS56 KSEW 011044
CLMSEW

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
344 AM PDT THU OCT 01 2026

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1894 TO 2026

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           81   09/09         MM      MM       92  09/16
LOWEST            44   09/28         MM      MM       49  09/19
AVG. MAXIMUM    70.0               71.3    -1.3     75.1
AVG. MINIMUM    53.1               53.2    -0.1     55.6
MEAN            61.6               62.3    -0.7     65.3
DAYS MAX >= 90     0                0.1    -0.1        1
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          1.57               1.74   -0.17     0.97
DAILY AVG.      0.05               0.06   -0.01     0.03
DAYS >= .01        9                8.8     0.2        5
DAYS >= .10        4                4.6    -0.6        3
DAYS >= .50        2                1.0     1.0        1
DAYS >= 1.00       0                0.1    -0.1        0

DEGREE DAYS
HEATING TOTAL    102                106      -4       32
 SINCE 7/1       118                162     -44       MM
COOLING TOTAL      4                 24     -20       50
 SINCE 1/1       289                210      79       MM
................................................................


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       2     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

$$