Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011154
CLMLND

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
335 AM MDT MON MAY 1 2017

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2017 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 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

...APRIL WAS SLIGHTLY COOLER AND WETTER THAN NORMAL IN LANDER...

THE AVERAGE TEMPERATURE FOR LANDER IN APRIL WAS 42.4 DEGREES...
WHICH WAS 1.5 DEGREES BELOW NORMAL. THE WARMEST READING OF THE MONTH
WAS 75 DEGREES ON THE 13TH. THE COLDEST READING WAS 20 DEGREES ON
THE 5TH. NO TEMPERATURE RECORDS WERE SET DURING THE MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 3.26 INCHES...WHICH WAS 174
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD DURING THE MONTH WAS
ON THE 28TH...WHEN 0.94 INCHES FELL. TOTAL SNOWFALL FOR THE MONTH
WAS 17.4 INCHES...WHICH WAS 104 PERCENT OF NORMAL. 10.7 INCHES OF
SNOW FELL ON THE 4TH...BREAKING THE PREVIOUS RECORD OF 6
INCHES...SET IN 2009. THE HIGHEST WIND GUST WAS 52 MPH ON THE 17TH.

...THE LANDER WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              83   04/23/2012
 LOW              -11   04/02/1936
                        04/22/1892
HIGHEST            75   04/13
LOWEST             20   04/05
AVG. MAXIMUM     53.9              56.4    -2.5
AVG. MINIMUM     31.0              31.3    -0.3
MEAN             42.4              43.9    -1.5
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     18
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.19   1900
 MINIMUM         0.10   1930
TOTALS           3.26              1.87    1.39
DAILY AVG.       0.11              0.06    0.05
DAYS >= .01        10
DAYS >= .10         7
DAYS >= .50         3
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.94   04/28 TO 04/28

SNOWFALL (INCHES)
TOTALS           17.4              16.8     0.6
SINCE 7/1        84.1              86.5    -2.4
SNOWDEPTH AVG.      1
DAYS >= 1.0         2

DEGREE_DAYS
HEATING TOTAL     670               635      35
 SINCE 7/1       7085              7254    -169
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              7.2
RESULTANT WIND SPEED/DIRECTION   1/233
HIGHEST WIND SPEED/DIRECTION    38/190    DATE  04/13
HIGHEST GUST SPEED/DIRECTION    52/250    DATE  04/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                8     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      3
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 2017...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 71
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 44. THE AVERAGE MONTHLY
PRECIPITATION IS 2.20 INCHES.

$$



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