Climatological Report (Monthly)
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CXUS55 KRIW 011924
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1134 AM MDT TUE AUG 1 2017

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JULY 2017 WILL BE
AVAILABLE APPROXIMATELY IN SEPTEMBER 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

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

THE AVERAGE TEMPERATURE FOR GREYBULL IN JULY WAS 77.7 DEGREES...
WHICH WAS 4.0 DEGREES ABOVE NORMAL. THIS MAKES IT THE 5TH WARMEST
JULY ON RECORD. THE WARMEST READING OF THE MONTH WAS 103 DEGREES ON
THE 5TH...SETTING A NEW RECORD HIGH. THIS BROKE THE PREVIOUS RECORD
OF 102...SET IN 2001. THE COLDEST READING WAS 50 DEGREES ON THE
1ST...SETTING A NEW RECORD LOW AS WELL. THIS BROKE THE PREVIOUS
RECORD OF 51...SET IN 1999. A RECORD LOW OF 53 DEGREES WAS SET ON
THE 3RD...BREAKING THE PREVIOUS RECORD OF 55...SET IN 2008.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.09...WHICH WAS 14 PERCENT OF
NORMAL.  THIS TIES 2016 AS THE 7TH DRIEST JULY ON RECORD. THE
WETTEST 24 HOUR PERIOD WAS THE 20TH...WHEN 0.04 INCHES FELL...AND
SET A NEW RECORD. THIS BROKE THE PREVIOUS RECORD OF A TRACE...SET IN
2008. 0.03 OF AN INCH OF PRECIPITATION FELL ON THE 29TH...BREAKING
THE PREVIOUS RECORD OF 0.01...SET IN 2010. THE HIGHEST WIND GUST WAS
65 MPH ON THE 31ST.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JULY 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             108   07/14/2002
 LOW               44   07/07/2010
                        07/12/2008
HIGHEST           103   07/05
LOWEST             50   07/01
AVG. MAXIMUM     95.8              90.3     5.5
AVG. MINIMUM     59.6              57.2     2.4
MEAN             77.7              73.7     4.0
DAYS MAX >= 90     29
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.53   2004
 MINIMUM         0.00   2011
                        2007
TOTALS           0.09              0.66   -0.57
DAILY AVG.       0.00              0.02   -0.02
DAYS >= .01         4
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.04   07/20 TO 07/20

DEGREE_DAYS
HEATING TOTAL       0                 6      -6
 SINCE 7/1          0                 6      -6
COOLING TOTAL     402               277     125
 SINCE 1/1        556               403     153
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.3
HIGHEST WIND SPEED/DIRECTION    46/340    DATE  07/09
HIGHEST GUST SPEED/DIRECTION    65/010    DATE  07/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           31
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

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                       0     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

LOOKING AHEAD TO AUGUST 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 92 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 58 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 84
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 50 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.42 INCHES.

$$


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