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000
CXUS55 KRIW 020930
CLMGEY

CYSCLMGEY 000
TTAA00 KRIW 020835


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
233 AM MDT SUN JUN 2 2013

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL FOR THE MONTH OF MAY 2013...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2013 WILL BE AVAILABLE
APPROXIMATELY IN JULY 2013 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.CRH.
NOAA.GOV/RIW/CLIMATE/...

...MAY WAS SLIGHTLY WARMER AND DRIER THAN NORMAL IN GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL IN MAY WAS 58.9 DEGREES...
WHICH WAS 2.3 DEGREES ABOVE NORMAL. THE WARMEST DAILY HIGH FOR THE
MONTH WAS 93 DEGREES ON THE 13TH. A RECORD HIGH OF 85 DEGREES WAS
SET ON THE 23RD...TYING THE PREVIOUS RECORD SET IN 2003. THE COLDEST
READING WAS 26 DEGREES ON THE 2ND...TYING THE RECORD LAST SET IN
2005.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.01 INCHES...WHICH WAS 61
PERCENT OF NORMAL. THE WETTEST PERIOD OF THE MONTH WAS ON THE
29TH...WHEN 0.34 OF AN INCH OF PRECIPITATION FELL. THIS BROKE THE
PREVIOUS RECORD OF 0.22...SET IN 2011. 0.22 OF AN INCH OF
PRECIPITATION ON THE 18TH...ALSO SET A NEW RECORD...BREAKING THE
PREVIOUS RECORD OF 0.17 SET IN 2012. THE HIGHEST WIND GUST WAS 53
MPH...WHICH OCCURRED ON THE 19TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              98   05/29/2003
 LOW               20   05/09/2002
HIGHEST            93   05/13
LOWEST             26   05/02
AVG. MAXIMUM     72.4              70.4     2.0
AVG. MINIMUM     45.3              42.7     2.6
MEAN             58.9              56.6     2.3
DAYS MAX >= 90      1
DAYS MAX <= 32      0
DAYS MIN <= 32      2
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.32   2010
 MINIMUM         0.19   2001
TOTALS           1.01              1.65   -0.64
DAILY AVG.       0.03              0.05   -0.02
DAYS >= .01         8
DAYS >= .10         5
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.34   05/29 TO 05/29


DEGREE_DAYS
HEATING TOTAL     209               281     -72
 SINCE 7/1       7619              7680     -61
COOLING TOTAL      27                19       8
 SINCE 1/1         27                20       7
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    43/320    DATE  05/19
HIGHEST GUST SPEED/DIRECTION    53/310    DATE  05/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     49

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               12     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                      0

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

LOOKING AHEAD TO JUNE 2013...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 75 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 48 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 92
DEGREES...AND THE AVERAGE LOW IS 60. THE AVERAGE MONTHLY
PRECIPITATION IS 0.79 INCHES.

$$