Climatological Report (Monthly)
Issued by NWS

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975
CXUS55 KRIW 020908 AAA
CLMP60

CLIMATE REPORT...UPDATED
NATIONAL WEATHER SERVICE RIVERTON WY
309 AM MDT TUE AUG 2 2016

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE LAKE YELLOWSTONE FOR
THE MONTH OF JULY 2016...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JULY 2016 WILL BE
AVAILABLE APPROXIMATELY IN SEPTEMBER 2016 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 COOLER AND DRIER THAN NORMAL FOR LAKE YELLOWSTONE...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN JULY WAS 54.9
DEGREES...WHICH WAS 1.0 DEGREE BELOW NORMAL. THE WARMEST READING OF
THE MONTH WAS 82 DEGREES ON THE 21ST...AND THE COLDEST WAS 29
DEGREES ON THE 12TH. ONE NEW RECORD LOW READING WAS SET DURING THE
MONTH...30 DEGREES ON THE 13TH...BREAKING THE OLD OF 32 SET BACK IN
2008.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.91 INCHES...WHICH WAS 62
PERCENT OF NORMAL...WHICH MAKES LAST MONTH THE 6TH DRIEST JULY SINCE
RECORDS STARTED IN 1998. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS
THE 10TH AND 11TH...WHEN 0.66 OF AN INCH OF PRECIPITATION FELL. ONE
PRECIPITATION RECORD WAS SET IN JULY...0.63 OF AN INCH FELL ON THE
10TH...BREAKING THE OLD OF 0.29 SET IN 2005. THE HIGHEST WIND GUST
WAS 47 MPH ON THE 30TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF JULY 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              86   07/14/2002
                        07/31/2000
 LOW               27   07/12/2008
HIGHEST            82   07/21
LOWEST             29   07/12
AVG. MAXIMUM     72.4
AVG. MINIMUM     37.4
MEAN             54.9              55.9    -1.0
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      4
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.42   2007
 MINIMUM         0.20   2008
TOTALS           0.91              1.47   -0.56
DAILY AVG.       0.03
DAYS >= .01         8
DAYS >= .10         1
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.66   07/10 TO 07/11

DEGREE_DAYS
HEATING TOTAL     308               283      25
 SINCE 7/1        308               283      25
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              3.5
HIGHEST WIND SPEED/DIRECTION    28/280    DATE  07/30
HIGHEST GUST SPEED/DIRECTION    47/290    DATE  07/30

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)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     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                      0

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

LOOKING AHEAD TO AUGUST 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 74 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 41 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 69
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 36 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.52 INCHES.

$$



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