Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 021001 RRA
CLMGEY

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

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL 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

...JUNE WAS WARMER AND MUCH WETTER THAN NORMAL FOR GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL FOR THE MONTH OF JUNE WAS 68.1
DEGREES...WHICH WAS 1.9 DEGREES ABOVE NORMAL. THIS RANKS JUNE THE
9TH WARMEST ON RECORD. THE WARMEST READING OF THE MONTH WAS 99
DEGREES ON THE 13TH. THE COLDEST READING WAS 44 DEGREES ON THE 10TH.
SEVERAL ONE DAY RECORDS WERE BROKEN...95 ON THE 1ST BROKE THE 92 SET
IN 2017. A 96 ON THE 12TH BROKE THE 92 SET IN 2015. THE 99 ON THE
13TH BROKE A 95 SET BACK IN 2006 AND ON THE 15TH AN 88 TIES THE
DAILY RECORD SET IN 2003.

TOTAL PRECIPITATION FOR THE MONTH WAS 2.11 INCHES. THIS IS 176
PERCENT OF NORMAL...AND THE 2ND WETTEST JUNE SINCE RECORDS BEGAN IN
1998. THE WETTEST PERIOD OF THE MONTH WAS THE 28TH WITH 0.73 INCHES.
THIS BROKE THE PREVIOUS DAILY RECORD OF 0.03 SET IN 2014. SEVERAL
DAILY PRECIPITATION RECORDS WERE BROKEN...0.65 INCHES ON THE 17TH
BROKE A PREVIOUS 0.37 INCHES SET IN 2014. ON THE 25TH 0.21 BREAKS
0.01 SET IN 2001...AND ON THE 29TH 0.07 INCHES BROKE 0.05 SET IN
1999. THE HIGHEST WIND GUST WAS 59 MPH ON THE 3RD.

...THE GREYBULL 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             105   06/24/2012
                        06/29/2002
 LOW               32   06/07/2009
HIGHEST            99   06/13
LOWEST             44   06/10
AVG. MAXIMUM     82.4              80.9     1.5
AVG. MINIMUM     53.7              51.5     2.2
MEAN             68.1              66.2     1.9
DAYS MAX >= 90      6
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.42   2009
 MINIMUM         0.12   2012
TOTALS           2.11              1.20    0.91
DAILY AVG.       0.07              0.04    0.03
DAYS >= .01         9
DAYS >= .10         5
DAYS >= .50         2
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.73   06/28

DEGREE_DAYS
HEATING TOTAL      46                70     -24
 SINCE 7/1       7465              7750    -285
COOLING TOTAL     145               106      39
 SINCE 1/1        192               126      66
.................................................

WIND (MPH)
AVERAGE WIND SPEED              7.7
HIGHEST WIND SPEED/DIRECTION    41/340    DATE  06/24
HIGHEST GUST SPEED/DIRECTION    59/310    DATE  06/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     46

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP                0
HEAVY RAIN                4     RAIN                        5
LIGHT RAIN               17     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                      5

-  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 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 0.18 INCHES.

$$



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