Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 021006 RRA
CLMP60

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1100 AM MDT WED JUL 1 2020

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE FOR THE
MONTH OF JUNE 2020...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JUNE 2020 WILL BE
AVAILABLE APPROXIMATELY IN 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...LAKE YELLOWSTONE WAS COOLER AND SLIGHTLY WETTER THAN NORMAL
IN JUNE...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN JUNE WAS 46.6
DEGREES...WHICH IS 2 DEGREES BELOW NORMAL. THE WARMEST READING OF
THE MONTH WAS 76 DEGREES ON THE 24TH. THE COLDEST READING WAS 23
DEGREES ON THE 9TH. A FEW DAILY TEMPERATURE RECORDS WERE BROKEN. ON
THE 1ST 71 DEGREES BROKE THE PREVIOUS RECORD OF 70 SET IN 2001. A 75
ON THE 5TH BROKE A 72 SET IN 2016...AND A DAILY LOW OF 28 ON THE 19
TIED A RECORD SET IN 2002.

TOTAL PRECIPITATION FOR THE MONTH WAS 2.06 INCHES...WHICH WAS 103
PERCENT OF NORMAL...JUST 0.06 INCHES ABOVE NORMAL. THE WETTEST 24
HOUR PERIOD OF THE MONTH WAS THE 28TH WITH 0.48 INCHES. ONE DAILY
RECORD WAS BROKEN IN JUNE. THE 28TH HAD 0.48 INCHES...BREAKING THE
2017 RECORD OF 0.38 INCHES. THE HIGHEST WIND GUST FOR THE MONTH WAS
38 MPH ON THE 6TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF JUNE
2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2020

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              83   06/29/2015
 LOW               21   06/04/2011
HIGHEST            76   06/24
LOWEST             23   06/09
AVG. MAXIMUM     59.8
AVG. MINIMUM     33.4
MEAN             46.6              48.6    -2.0
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     12
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.34   2010
 MINIMUM         0.35   2007
TOTALS           2.06              2.00    0.06
DAILY AVG.       0.07
DAYS >= .01        16
DAYS >= .10         7
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.48   06/28

DEGREE_DAYS
HEATING TOTAL     544               493      51
 SINCE 7/1      12188             11521     667
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              2.5
HIGHEST WIND SPEED/DIRECTION    18/260    DATE  06/06
HIGHEST GUST SPEED/DIRECTION    38/270    DATE  06/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           30
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP                0
HEAVY RAIN                0     RAIN                        0
LIGHT RAIN               16     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 JULY 2020...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 69 DEGREES...AND THE AVERAGE LOW IS 38
DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 74
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 41 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.47 INCHES.

$$


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