836
CXUS56 KSEW 011044
CLMOLM

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

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

...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1941 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             98   09/02/1988
 LOW              25   09/27/1972
HIGHEST           82   09/09         MM      MM       88  09/16
LOWEST            34   09/28         MM      MM       40  09/19
AVG. MAXIMUM    69.4               72.1    -2.7     74.3
AVG. MINIMUM    45.7               46.2    -0.5     49.0
MEAN            57.6               59.1    -1.5     61.7
DAYS MAX >= 90     0                0.4    -0.4        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.2    -0.2        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.36   2013
 MINIMUM           T   2012
TOTALS          1.91               2.04   -0.13     1.28
DAILY AVG.      0.06               0.07   -0.01     0.04
DAYS >= .01       11                8.1     2.9        5
DAYS >= .10        5                4.6     0.4        2
DAYS >= .50        1                1.3    -0.3        2
DAYS >= 1.00       0                0.3    -0.3        0
GREATEST
 24 HR. TOTAL   0.95   09/24 TO 09/25

DEGREE DAYS
HEATING TOTAL    215                183      32      102
 SINCE 7/1       304                325     -21       MM
COOLING TOTAL      0                  8      -8       11
 SINCE 1/1       124                113      11       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.7
HIGHEST WIND SPEED/DIRECTION    32/190    DATE  09/25
HIGHEST GUST SPEED/DIRECTION    54/180    DATE  09/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.45
NUMBER OF DAYS FAIR            9
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      23     FOG W/VIS <= 1/4 MILE     10
HAZE                      1

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

$$