Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 020913 AAA
CLMLND

CLIMATE REPORT...AMENDED
NATIONAL WEATHER SERVICE RIVERTON WY
455 PM MDT THU JUN 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE HUNT FIELD IN LANDER
FOR THE MONTH OF MAY 2017...

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

...MAY WAS SLIGHTLY COOLER THAN NORMAL IN LANDER...

THE AVERAGE TEMPERATURE FOR LANDER IN MAY WAS 52.4 DEGREES...
WHICH WAS 0.9 DEGREES BELOW NORMAL. THE WARMEST READING OF THE MONTH
WAS 80 DEGREES ON THE 5TH AND 12TH. THE COLDEST READING WAS 30
DEGREES ON THE 19TH. NO TEMPERATURE RECORDS WERE SET DURING THE
MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 2.20 INCHES...WHICH WAS 100
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD DURING THE MONTH WAS
ON THE 18TH...WHEN 1.38 INCHES FELL.  THIS SET A NEW RECORD...
BREAKING THE PREVIOUS RECORD OF 1.06...SET IN 2011. TOTAL SNOWFALL
FOR THE MONTH WAS 6.8 INCHES...WHICH WAS 142 PERCENT OF NORMAL. 6.3
INCHES OF SNOW FELL ON THE 18TH...BREAKING THE PREVIOUS RECORD OF
1.5 INCHES...SET IN 1971. THE HIGHEST WIND GUST WAS 52 MPH ON THE
17TH.


...THE LANDER WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              93   05/29/2003
 LOW               13   05/02/1903
HIGHEST            80   05/12
                        05/05
LOWEST             30   05/19
AVG. MAXIMUM     65.1              66.5    -1.4
AVG. MINIMUM     39.7              40.1    -0.4
MEAN             52.4              53.3    -0.9
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      4
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.77   2011
 MINIMUM         0.06   1956
TOTALS           2.20              2.20    0.00
DAILY AVG.       0.07              0.07    0.00
DAYS >= .01         8
DAYS >= .10         5
DAYS >= .50         1
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.38   05/18 TO 05/18

SNOWFALL (INCHES)
TOTALS            6.8               4.8     2.0
SINCE 7/1        90.9              91.3    -0.4
SNOWDEPTH AVG.      0
DAYS >= 1.0         1

DEGREE_DAYS
HEATING TOTAL     382               368      14
 SINCE 7/1       7467              7622    -155
COOLING TOTAL       0                 5      -5
 SINCE 1/1          0                 5      -5
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.9
RESULTANT WIND SPEED/DIRECTION   2/219
HIGHEST WIND SPEED/DIRECTION    41/240    DATE  05/24
HIGHEST GUST SPEED/DIRECTION    53/240    DATE  05/24

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)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                2     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
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 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 72 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 44 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 83
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 53. THE AVERAGE MONTHLY
PRECIPITATION IS 1.27 INCHES.

$$


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