Climatological Report (Monthly)
Issued by NWS

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207
CXUS55 KRIW 022025
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
242 PM MDT SAT APR 1 2017

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MARCH 2017 WILL BE
AVAILABLE APPROXIMATELY IN MAY 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

...MARCH WAS MUCH WARMER THAN NORMAL IN GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL IN MARCH WAS 43.9 DEGREES...
WHICH WAS 7.0 DEGREES ABOVE NORMAL. THIS MAKES IT THE 2ND WARMEST
MARCH ON RECORD. THE WARMEST READING OF THE MONTH WAS 72 DEGREES ON
THE 18TH...SETTING A NEW RECORD HIGH. THIS BROKE THE PREVIOUS RECORD
OF 71...SET IN 2007. THE COLDEST READING WAS 20 DEGREES ON THE 1ST.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.30...WHICH WAS 75 PERCENT OF
NORMAL. THE WETTEST 24 HOUR PERIOD WAS THE 6TH...23RD AND
25TH...WHEN 0.07 INCHES FELL. NEW RECORDS WERE SET EACH
DAY...BREAKING THE PREVIOUS RECORDS OF 0.02...0.01...AND A
TRACE...SET IN 1998...2005...AND 2010 RESPECTIVELY. 0.03 OF AN INCH
OF PRECIPITATION FELL ON THE 5TH...BREAKING THE PREVIOUS RECORD OF A
TRACE...SET IN 2008. 0.01 OF AN INCH OF PRECIPITATION FELL ON THE
12TH...BREAKING THE PREVIOUS RECORD OF A TRACE...LAST SET IN 2016.
THE HIGHEST WIND GUST WAS 49 MPH ON THE 12TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF MARCH 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              81   03/31/2012
 LOW              -12   03/09/2002
HIGHEST            72   03/18
LOWEST             20   03/01
AVG. MAXIMUM     55.8              50.7     5.1
AVG. MINIMUM     32.1              23.1     9.0
MEAN             43.9              36.9     7.0
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     14
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.49   2003
 MINIMUM         0.00   2009
TOTALS           0.30              0.40   -0.10
DAILY AVG.       0.01              0.01    0.00
DAYS >= .01         6
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.07   03/25 TO 03/25
                        03/23 TO 03/23
                        03/06 TO 03/06

DEGREE_DAYS
HEATING TOTAL     644               871    -227
 SINCE 7/1       6685              6842    -157
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.1
HIGHEST WIND SPEED/DIRECTION    38/350    DATE  03/12
HIGHEST GUST SPEED/DIRECTION    49/350    DATE  03/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                2     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      2
HAZE                      1

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

LOOKING AHEAD TO APRIL 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 57 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 28 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 65
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 37 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.71 INCHES.

$$



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