Climatological Report (Monthly)
Issued by NWS

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000
CXUS55 KRIW 012218
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
418 PM MDT SAT JUL 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL FOR THE MONTH OF JUNE 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JUNE 2017 WILL BE
AVAILABLE APPROXIMATELY IN AUGUST 2017 FROM THE NATIONAL CENTER FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCEI.NOAA.GOV/OL/
CLIMATEDATA.HTML). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON
THE INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...GREYBULL WAS WARMER AND MUCH DRIER THAN NORMAL IN JUNE...

THE AVERAGE TEMPERATURE FOR GREYBULL IN JUNE WAS 68.9 DEGREES...
WHICH WAS 2.7 DEGREES ABOVE NORMAL.  THIS MAKES IT THE 6TH WARMEST
JUNE ON RECORD. THE WARMEST READING OF THE MONTH WAS 97 DEGREES ON
THE 8TH...TYING THE PREVIOUS RECORD SET IN 2000. A RECORD HIGH OF 92
DEGREES WAS SET ON THE 1ST...BREAKING THE PREVIOUS RECORD OF 87
DEGREES... SET IN 2015.  A RECORD HIGH OF 95 DEGREES WAS SET ON THE
20TH...TYING THE PREVIOUS RECORD... SET IN 2007. THE COLDEST READING
WAS 45 DEGREES ON THE 13TH. A RECORD LOW OF 46 DEGREES WAS SET ON
THE 30TH...BREAKING THE PREVIOUS RECORD OF 48 DEGREES...SET IN 2005.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.28...WHICH WAS 23 PERCENT OF
NORMAL.  THIS MAKES IT THE 5TH DRIEST JUNE ON RECORD. THE WETTEST 24
HOUR PERIOD WAS THE 11TH...WHEN 0.09 INCHES FELL. 0.03 OF AN INCH OF
PRECIPITATION FELL ON THE 28TH...TYING THE PREVIOUS RECORD SET
IN 2014.
THE HIGHEST WIND GUST WAS 66 MPH ON THE 9TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JUNE 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             105   06/24/2012
                        06/29/2002
 LOW               32   06/07/2009
HIGHEST            97   06/08
LOWEST             45   06/13
AVG. MAXIMUM     84.0              80.9     3.1
AVG. MINIMUM     53.8              51.5     2.3
MEAN             68.9              66.2     2.7
DAYS MAX >= 90      8
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.42   2009
 MINIMUM         0.12   2012
TOTALS           0.28              1.20   -0.92
DAILY AVG.       0.01              0.04   -0.03
DAYS >= .01         5
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.09   06/11 TO 06/11

DEGREE_DAYS
HEATING TOTAL      17                70     -53
 SINCE 7/1       7452              7750    -298
COOLING TOTAL     143               106      37
 SINCE 1/1        155               126      29
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
HIGHEST WIND SPEED/DIRECTION    54/310    DATE  06/09
HIGHEST GUST SPEED/DIRECTION    66/310    DATE  06/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     40

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       1     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

LOOKING AHEAD TO JULY 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 87 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 55 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 92
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 58 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.66 INCHES.

$$



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