Climatological Report (Monthly)
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000
CXUS56 KSEW 011032
CLMBLI


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
231 AM PST MON JAN 1 2018

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

...THE BELLINGHAM WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1949 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              67   12/10/2014
 LOW                    12/16/1964
HIGHEST            51   12/06        MM      MM       49  12/20
                                                          12/02
LOWEST             23   12/23        MM      MM       14  12/17
AVG. MAXIMUM     43.3              44.2    -0.9     38.9
AVG. MINIMUM     30.8              32.0    -1.2     29.4
MEAN             37.0              38.1    -1.1     34.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      2               2.1    -0.1        8
DAYS MIN <= 32     21              14.7     6.3       22
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.99   1979
 MINIMUM         1.00   1985
TOTALS           6.08              4.22    1.86     3.96
DAILY AVG.       0.20              0.14    0.06     0.13
DAYS >= .01        12              18.5    -6.5       19
DAYS >= .10         8              10.9    -2.9       12
DAYS >= .50         3               2.0     1.0        2
DAYS >= 1.00        2               0.5     1.5        0
GREATEST
 24 HR. TOTAL    2.22   12/19 TO 12/19

DEGREE_DAYS
HEATING TOTAL     859               834      25      950
COOLING TOTAL       0                 0       0        0
 SINCE 1/1         97                42      55      101
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    28/010    DATE  12/22
HIGHEST GUST SPEED/DIRECTION    42/040    DATE  12/22

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               12     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                5     SLEET                      0
FOG                      24     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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