Climatological Report (Monthly)
Issued by NWS Seattle/Tacoma, WA

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000
CXUS56 KSEW 052102
CLMSEW

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
102 PM PST FRI JAN 05 2024

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

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...

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           64   12/29         MM      MM       56  12/26
LOWEST            33   12/17         MM      MM       19  12/22
                       12/23
                       12/24
AVG. MAXIMUM    50.5               46.5     4.0     43.6
AVG. MINIMUM    39.8               37.0     2.8     35.1
MEAN            45.2               41.8     3.4     39.3
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.3    -0.3        2
DAYS MIN <= 32     0                6.7    -6.7       12
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.85   1996
 MINIMUM        1.49   2011
TOTALS          8.83               5.55    3.28     7.06
DAILY AVG.      0.28               0.18    0.10     0.23
DAYS >= .01       21               19.6     1.4       23
DAYS >= .10       16               12.1     3.9       13
DAYS >= .50        6                3.2     2.8        5
DAYS >= 1.00       2                1.0     1.0        2

SNOWFALL (INCHES)
TOTALS           0.0                                 1.6
SINCE 7/1        0.0                                  MM
SNOWDEPTH AVG.     0                                   0
GREATEST
 SNOW DEPTH        0                                   1  12/21
                                                          12/22

DEGREE DAYS
HEATING TOTAL    608                721    -113      789
 SINCE 7/1      1484               1796    -312       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       341                210     131       MM
................................................................


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       8
LIGHT RAIN               21     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      4
HAZE                      0

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

$$


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