410
CXUS56 KSEW 011132
CLMSEW

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

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1894 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             65   12/10/2014
 LOW              10   12/21/1990
HIGHEST           59   12/15         MM      MM       57  12/23
LOWEST            32   12/31         MM      MM       30  12/03
AVG. MAXIMUM    50.7               46.5     4.2     49.8
AVG. MINIMUM    41.9               37.0     4.9     39.7
MEAN            46.3               41.8     4.5     44.8
DAYS MAX >= 90     0                0.0     0.0       MM
DAYS MAX <= 32     0                0.3    -0.3       MM
DAYS MIN <= 32     1                6.7    -5.7       MM
DAYS MIN <= 0      0                0.0     0.0       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.85   1996
 MINIMUM        1.49   2011
TOTALS          6.63               5.55    1.08     6.71
DAILY AVG.      0.21               0.18    0.03     0.22
DAYS >= .01       23               19.6     3.4       MM
DAYS >= .10       15               12.1     2.9       MM
DAYS >= .50        4                3.2     0.8       MM
DAYS >= 1.00       2                1.0     1.0       MM

SNOWFALL (INCHES)
TOTALS           0.0                                 0.0
SINCE 7/1        0.0                                  MM
SNOWDEPTH AVG.     0                                   0
GREATEST
 SNOW DEPTH        0                                   0  MM

DEGREE DAYS
HEATING TOTAL    570                721    -151      621
 SINCE 7/1      1387               1796    -409       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       374                210     164       MM
................................................................


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       5
LIGHT RAIN               24     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

$$