Climatological Report (Monthly)
Issued by NWS

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000
CXUS55 KRIW 010902
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
149 AM MDT WED JUN 1 2016

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2016 WILL BE AVAILABLE
APPROXIMATELY IN JULY 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 SLIGHTLY DRIER THAN NORMAL IN MAY...

THE AVERAGE TEMPERATURE FOR GREYBULL IN MAY WAS 57.2 DEGREES...WHICH
WAS 0.6 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS
85 DEGREES ON THE 5TH. THE COLDEST READING WAS 33 DEGREES ON THE
1ST AND 2ND. NO TEMPERATURE RECORDS WERE SET DURING THE MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.36...WHICH WAS 82 PERCENT OF
THE NORMAL. THE WETTEST 24 HOUR PERIOD WAS ON THE 15TH AND 16TH...
WHEN 0.50 OF AN INCH FELL. 0.30 OF AN INCH FELL ON THE
16TH...BREAKING THE PREVIOUS RECORD OF 0.26 SET IN 2000. THE HIGHEST
WIND GUST WAS 50 MPH ON THE 21ST.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF MAY 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              98   05/29/2003
 LOW               20   05/09/2002
HIGHEST            85   05/05
LOWEST             33   05/02
                        05/01
AVG. MAXIMUM     70.2              70.4    -0.2
AVG. MINIMUM     44.3              42.7     1.6
MEAN             57.2              56.6     0.6
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.32   2010
 MINIMUM         0.19   2001
TOTALS           1.36              1.65   -0.29
DAILY AVG.       0.04              0.05   -0.01
DAYS >= .01         9
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.50   05/15 TO 05/16

DEGREE_DAYS
HEATING TOTAL     243               281     -38
 SINCE 7/1       6591              7680   -1089
COOLING TOTAL      11                19      -8
 SINCE 1/1         11                20      -9
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.5
HIGHEST WIND SPEED/DIRECTION    37/290    DATE  05/24
HIGHEST GUST SPEED/DIRECTION    50/150    DATE  05/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     52

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       2
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      1
HAZE                      4

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

LOOKING AHEAD TO JUNE 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 76 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 48 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 91
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 61 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.87 INCHES.

$$



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