Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 022344
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
544 PM MDT THU MAY 2 2019

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE NATRONA COUNTY
INTERNATIONAL AIRPORT NEAR CASPER FOR THE MONTH OF APRIL 2019...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2019 WILL BE
AVAILABLE APPROXIMATELY IN 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...THE MONTH OF APRIL WAS NEAR NORMAL FOR CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN APRIL WAS 43.6 DEGREES.
THIS WAS 0.9 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE
MONTH WAS 77 DEGREES ON THE 20TH. THE COLDEST READING WAS 16
DEGREES ON THE 29TH...WHICH TIED THE RECORD PREVIOUSLY SET IN 1990.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.28 INCHES...WHICH WAS 99
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON
THE 10TH WHEN 0.33 INCHES FELL. SNOWFALL FOR THE MONTH WAS 5.7
INCHES WHICH WAS 49 PERCENT OF NORMAL AND MAKES IT THE 20TH LEAST
SNOWIEST APRIL SINCE 1939. NO PRECIPITATION RECORDS WERE SET DURING
THE MONTH OF APRIL.
THE HIGHEST WIND GUST WAS 55 MPH ON THE 26TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              84   04/30/1992
 LOW               -6   04/12/1997
HIGHEST            77   04/20
LOWEST             16   04/29
AVG. MAXIMUM     56.6              56.8    -0.2
AVG. MINIMUM     30.6              28.6     2.0
MEAN             43.6              42.7     0.9
DAYS MAX >= 90      0
DAYS MAX <= 32      1
DAYS MIN <= 32     17
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.75   1941
 MINIMUM         0.08   1992
TOTALS           1.28              1.29   -0.01
DAILY AVG.       0.04              0.04    0.00
DAYS >= .01        12
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.33   04/10 TO 04/10

SNOWFALL (INCHES)
TOTALS            5.7              11.6    -5.9
SINCE 7/1        72.3              71.9     0.4
DAYS >= 1.0         2

DEGREE_DAYS
HEATING TOTAL     635               669     -34
 SINCE 7/1       7207              7042     165
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              12.1
RESULTANT WIND SPEED/DIRECTION   4/253
HIGHEST WIND SPEED/DIRECTION    43/250    DATE  04/26
HIGHEST GUST SPEED/DIRECTION    55/240    DATE  04/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP                0
HEAVY RAIN                1     RAIN                        2
LIGHT RAIN               15     FREEZING RAIN               0
LT FREEZING RAIN          0     HAIL                        0
HEAVY SNOW                0     SNOW                        1
LIGHT SNOW                4     SLEET                       0
FOG                      12     FOG W/VIS <= 1/4 MILE       1
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 2019...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 62 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 33 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 72
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 41. THE AVERAGE MONTHLY
PRECIPITATION IS 2.02 INCHES WITH 2.9 INCHES OF SNOWFALL.

$$



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