Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS56 KOTX 012110 CCA
CLMEAT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
210 PM PDT THU JUN 1 2017

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

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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1959 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             103   05/31/1986
 LOW               32   05/12/1985
HIGHEST            91   05/29        MM      MM       89  05/07
                        05/23
LOWEST             37   05/14        MM      MM       44  05/20
AVG. MAXIMUM     72.5              71.1     1.4     75.2
AVG. MINIMUM     48.0              48.4    -0.4     51.5
MEAN             60.2              59.8     0.4     63.4
DAYS MAX >= 90      3               1.0     2.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.02   1998
 MINIMUM         0.00   2003
TOTALS           0.61              0.68   -0.07     0.94
DAILY AVG.       0.02              0.02    0.00     0.03
DAYS >= .01        10               5.5     4.5        7
DAYS >= .10         3               2.0     1.0        2
DAYS >= .50         0               0.2    -0.2        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.15   05/11 TO 05/11           05/20 TO 05/21

DEGREE_DAYS
COOLING TOTAL      56               109     -53       30
 SINCE 1/1         56               147     -91       42
..................................................

WIND (MPH)
AVERAGE WIND SPEED              8.6
HIGHEST WIND SPEED/DIRECTION    38/290    DATE  05/30
HIGHEST GUST SPEED/DIRECTION    47/300    DATE  05/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

$$
MAY WAS VERY TYPICAL ACROSS THE INLAND NORTHWEST WITH THE MONTH
FINISHING WITH NEAR NORMAL TEMPERATURES AND PRECIPITATION ACROSS
NORTH CENTRAL WASHINGTON. SPRING WEATHER TYPICAL MEANS LOTS OF
WEATHER CHANGES AND THIS MONTH WAS NO EXCEPTION.  THE MONTH STARTED
OFF COOL WITH WENATCHEE ONLY REACHING 54 DEGREES ON THE 1ST.  A FAST
WARM FOLLOWED WITH 82 ON THE 4TH...AND THEN A QUICK COOL DOWN BACK
INTO THE LOWER 60S ON THE 6TH.  THIS BIG OF AN AIR MASS CHANGE
RESULTED IN NOCTURNAL THUNDERSTORMS EARLY ON THE 5TH WITH ABUNDANT
LIGHTNING AND HEAVY RAIN. ANOTHER WARMUP FOLLOWED WITH UPPER 70S ON
THE 10TH FOLLOWED BY ANOTHER COOL DOWN THAT RESULTED IN ISOLATED
THUNDERSTORMS ON THE 11TH.  THE STRONGEST STORM WENT THROUGH
NESPELEM WITH ONE INCH HAIL. A LARGE UPPER TROUGH DOMINATED THE
WESTERN U.S. FROM THE 12TH THROUGH 18TH BRINGING A PERIOD OF COOL
AND SHOWERY WEATHER WITH HIGH TEMPERATURES ON SEVERAL DAYS ONLY IN
THE 50S WITH ISOLATED THUNDERSTORMS...AND SMALL HAIL.  ON THE 16TH
ISOLATED THUNDERSTORMS DEVELOPED ON THE WATERVILLE PLATEAU AND
COULEE CITY AREA WITH HEAVY RAIN...HAIL...SNOW PELLETS...AND EVEN
LOCALLY SLICK ROADS. ANOTHER WARMUP FOLLOWED WITH HIGHS WARMING TO
91 IN WENATCHEE ON THE 23RD BEFORE A STRONG DRY COLD FRONT BROUGHT
WINDY CONDITIONS ON THE 24TH WITH HIGHS BACK DOWN INTO THE 60S.
STRONG HIGH PRESSURE BUILD FOR THE END OF THE MONTH WITH HIGHS BACK
UP NEAR 90 FROM THE 28TH THROUGH THE 30TH.  LATE ON THE 30TH...THE
WARM SPELL ENDED WITH SCATTERED THUNDERSTORMS PRODUCING BRIEF HEAVY
RAIN AND GUSTY WINDS.  EPHRATA RECORDED A PEAK WIND OF 55 MPH...WITH
47 MPH IN WENATCHEE.

THE BOUTS OF WARM WEATHER LED TO PERIODS OF SIGNIFICANT MOUNTAIN
SNOW MELT WITH MINOR FLOODING ON THE STEHEKIN...OKANOGAN...METHOW...
AND ENTIAT RIVERS.

RECORD DAILY RAINFALL RECORDS OF 0.59 AND 0.45 INCHES WERE SET AT
THE WENATCHEE AIRPORT ON THE 12TH AND 13TH RESPECTIVELY.


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