Climatological Report (Monthly)
Issued by NWS Spokane, WA

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689
CXUS56 KOTX 030233 CCA
CLMEAT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
633 PM PST TUE JAN 2 2018

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

...THE WENATCHEE WA PANGBORN FIELD CLIMATE SUMMARY FOR THE MONTH OF
DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1959 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              58   12/16/1999
                        12/14/1979
                        12/02/1975
 LOW              -21   12/30/1968
HIGHEST            43   12/30        32      11       48  12/03
                        12/03                             12/01
LOWEST              8   12/24        24     -16        2  12/18
                                                          12/17
AVG. MAXIMUM     31.1              33.6    -2.5     29.4
AVG. MINIMUM     23.9              23.2     0.7     17.3
MEAN             27.5              27.9    -0.4     23.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     19               0.3    18.7       20
DAYS MIN <= 32     31               9.1    21.9       31
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.29   1996
 MINIMUM         0.10   1976
TOTALS           0.87              1.40   -0.53     0.41
DAILY AVG.       0.03              0.04   -0.01     0.01
DAYS >= .01         7               5.9     1.1        9
DAYS >= .10         2               2.1    -0.1        0
DAYS >= .50         0               0.1    -0.1        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.35   12/19 TO 12/19           12/19 TO 12/20

DEGREE_DAYS
HEATING TOTAL    1156              1148       8     1282
 SINCE 7/1       2579              2520      59     2359
....................................................

WIND (MPH)
AVERAGE WIND SPEED              2.7
HIGHEST WIND SPEED/DIRECTION    18/290    DATE  12/19
HIGHEST GUST SPEED/DIRECTION    24/330    DATE  12/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY         20

AVERAGE RH (PERCENT)     85

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW               13     SLEET                      0
FOG                      18     FOG W/VIS <= 1/4 MILE      5
HAZE                      0

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

$$

DECEMBER 2017 BROUGHT NEAR NORMAL TEMPERATURES AND DRIER THAN NORMAL
CONDITIONS TO NORTH CENTRAL WASHINGTON. THE FIRST HALF OF THE MONTH
WAS DOMINATED BY STRONG HIGH PRESSURE WHICH BROUGHT MILD...DRY
CONDITIONS TO THE MOUNTAINS AND COLD AND EVENTUALLY CLOUDY
CONDITIONS TO THE VALLEYS. THE SECOND HALF OF THE MONTH WAS MUCH
MORE ACTIVE...ALTHOUGH WESTERLY FLOW WITH MOST OF THE SYSTEMS GAVE
THE CASCADES THE BRUNT OF THE PRECIPITATION.  ON THE 18TH AND 19TH A
MILDER AND WET STORM BROUGHT HEAVY SNOW TO HOLDEN VILLAGE WITH 24
INCHES ALONG WITH 13 INCHES IN MAZAMA AND 6 IN STEHEKIN.  ON THE
23RD AND 24TH A SHOT OF COLD AIR ENTERED FROM THE NORTH.  THE METHOW
VALLEY WAS ESPECIALLY COLD WITH -7F IN WINTHROP.  ON THE 28TH AND
29TH A PAIR OF STORMS BROUGHT SNOW MAINLY TO THE CASCADE CREST ON
THE 28TH THEN WIDESPREAD HEAVY SNOW ON THE 29TH IN THE CASCADES WITH
A WINTRY MIX OF SNOW...SLEET...FREEZING RAIN WENATCHEE AREA. SNOW
TOTALS INCLUDE 28 INCHES STEHEKIN...18 PLAIN...14 INCHES MAZAMA...12
LEAVENWORTH... AND 1-2 INCHES IN WENATCHEE.

NO RECORDS WERE SET DURING THE MONTH AT THE WENATCHEE AIRPORT.



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