Climatological Report (Monthly)
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CXUS56 KSEW 011031
CLMOLM


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
230 AM PST TUE JAN 1 2019

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

...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2018

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            56   12/20        MM      MM       54  12/29
LOWEST             17   12/07        MM      MM       20  12/11
                        12/06
AVG. MAXIMUM     46.9              44.2     2.7     44.0
AVG. MINIMUM     33.9              32.6     1.3     30.0
MEAN             40.4              38.4     2.0     37.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               1.0    -1.0        0
DAYS MIN <= 32     12              13.5    -1.5       21
DAYS MIN <= 0       0               0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        14.50   2015
 MINIMUM         2.02   2013
TOTALS           7.50              7.46    0.04     6.90
DAILY AVG.       0.24              0.24    0.00     0.22
DAYS >= .01        20              19.6     0.4       15
DAYS >= .10        15              13.1     1.9        9
DAYS >= .50         6               4.9     1.1        5
DAYS >= 1.00        1               1.8    -0.8        3
GREATEST
 24 HR. TOTAL    1.27   12/11 TO 12/11

DEGREE_DAYS
HEATING TOTAL     754               825     -71
COOLING TOTAL       0                 0       0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.6
HIGHEST WIND SPEED/DIRECTION    37/180    DATE  12/14
HIGHEST GUST SPEED/DIRECTION    50/170    DATE  12/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     86

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  9
  0
  0
  0
  0
  8
HAZE                      2

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

$$


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