366
CXUS56 KSEW 011137
CLMSEW

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
337 AM PST WED JAN 01 2025

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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             65   12/10/2014
 LOW              10   12/21/1990
HIGHEST           57   12/23         MM      MM       64  12/29
LOWEST            30   12/03         MM      MM       33  12/17
                                                          12/23
                                                          12/24
AVG. MAXIMUM    49.9               46.5     3.4     50.5
AVG. MINIMUM    39.6               37.0     2.6     39.8
MEAN            44.8               41.8     3.0     45.2
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.3    -0.3        0
DAYS MIN <= 32     3                6.7    -3.7        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.85   1996
 MINIMUM        1.49   2011
TOTALS          6.70               5.55    1.15     8.83
DAILY AVG.      0.22               0.18    0.04     0.28
DAYS >= .01       20               19.6     0.4       21
DAYS >= .10       16               12.1     3.9       16
DAYS >= .50        5                3.2     1.8        6
DAYS >= 1.00       0                1.0    -1.0        2

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    601                721    -120      608
 SINCE 7/1      1539               1796    -257       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       342                210     132       MM
................................................................


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     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.

$$