416
CXUS56 KSEW 011132
CLMOLM

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
332 AM PST THU JAN 01 2026

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

...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1941 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             64   12/10/2014
                       12/01/1958
 LOW              -7   12/23/1983
HIGHEST           60   12/12         MM      MM       55  12/17
                                                          12/18
LOWEST            24   12/31         MM      MM       26  12/05
AVG. MAXIMUM    48.6               44.9     3.7     47.9
AVG. MINIMUM    38.2               32.8     5.4     36.1
MEAN            43.4               38.9     4.5     42.0
DAYS MAX >= 90     0                0.0     0.0       MM
DAYS MAX <= 32     0                0.6    -0.6       MM
DAYS MIN <= 32    10               14.3    -4.3       MM
DAYS MIN <= 0      0                0.0     0.0       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       14.50   2015
 MINIMUM        2.02   2013
TOTALS         13.42               7.85    5.57    10.24
DAILY AVG.      0.43               0.25    0.18     0.33
DAYS >= .01       21               20.2     0.8       MM
DAYS >= .10       19               13.6     5.4       MM
DAYS >= .50        8                5.2     2.8       MM
DAYS >= 1.00       5                1.9     3.1       MM
GREATEST
 24 HR. TOTAL   3.05   12/07 TO 12/08


DEGREE DAYS
HEATING TOTAL    660                811    -151      704
 SINCE 7/1      1799               2240    -441       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       201                113      88       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.3
HIGHEST WIND SPEED/DIRECTION    28/260    DATE  12/17
HIGHEST GUST SPEED/DIRECTION    46/170    DATE  12/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.87
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY         26

AVERAGE RH (PERCENT)     90

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                      16
LIGHT RAIN               24     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      31     FOG W/VIS <= 1/4 MILE     11
HAZE                      0

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

$$