Climatological Report (Monthly)
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000
CXUS55 KRIW 010940
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
243 AM MDT SUN MAY 1 2016

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL FOR THE MONTH OF APRIL 2016...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2016 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 2016 FROM THE NATIONAL CLIMATIC DATA
CENTER (HTTP://WWW.NCDC.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 MUCH WARMER AND SLIGHTLY DRIER THAN NORMAL FOR
APRIL...

THE AVERAGE TEMPERATURE FOR GREYBULL IN APRIL WAS 49.8 DEGREES...
WHICH WAS 3.3 DEGREES ABOVE NORMAL. THIS MAKES IT THE 3RD WARMEST
APRIL ON RECORD. THE WARMEST READING OF THE MONTH WAS 84 DEGREES ON
THE 22ND...SETTING A NEW RECORD. THIS BROKE THE PREVIOUS RECORD OF
81...SET IN 2009. A HIGH OF 70 DEGREES ON THE 3RD BROKE THE PREVIOUS
RECORD OF 69...SET IN 2005. A HIGH OF 73 DEGREES ON THE 8TH BROKE
THE PREVIOUS RECORD OF 71...SET IN 2006. A HIGH OF 79 DEGREES ON THE
9TH BROKE THE PREVIOUS RECORD OF 76...SET IN 2014. THE COLDEST
READING WAS 29 DEGREES ON THE 6TH.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.46...WHICH WAS 65 PERCENT OF
THE NORMAL. THE WETTEST 24 HOUR PERIOD WAS ON THE 23RD AND 24TH...
WHEN 0.21 OF AN INCH FELL. THE HIGHEST WIND GUST WAS 63 MPH ON THE
14TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              88   04/23/2012
                        04/29/2007
 LOW                5   04/21/2008
HIGHEST            84   04/22
LOWEST             29   04/06
AVG. MAXIMUM     62.6              60.6     2.0
AVG. MINIMUM     37.1              32.3     4.8
MEAN             49.8              46.5     3.3
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      4
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.19   1999
 MINIMUM         0.10   2004
TOTALS           0.46              0.71   -0.25
DAILY AVG.       0.02              0.02    0.00
DAYS >= .01         5
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.21   04/23 TO 04/24

DEGREE_DAYS
HEATING TOTAL     447               557    -110
 SINCE 7/1       6348              7399   -1051
COOLING TOTAL       0                 1      -1
 SINCE 1/1          0                 1      -1
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.6
HIGHEST WIND SPEED/DIRECTION    51/290    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    63/280    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

LOOKING AHEAD TO MAY 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 62 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 36 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 74
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 47 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.31 INCHES.

$$



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