Climatological Report (Monthly)
Issued by NWS

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000
CXUS55 KRIW 012017
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
215 PM MDT WED NOV 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE NATRONA COUNTY
INTERNATIONAL AIRPORT NEAR CASPER FOR THE MONTH OF OCTOBER 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF OCTOBER 2017 WILL BE
AVAILABLE APPROXIMATELY IN DECEMBER 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

...CASPER WAS COLDER THAN NORMAL IN OCTOBER WITH NEAR AVERAGE
PRECIPITATION...

THE AVERAGE TEMPERATURE FOR CASPER IN OCTOBER WAS 43.7 DEGREES. THIS
WAS 1.5 DEGREES BELOW NORMAL. THE WARMEST READING OF THE MONTH WAS
74 DEGREES ON BOTH THE 17TH AND 19TH. THE COLDEST READING OF THE
MONTH WAS 9 DEGREES ON THE 31ST. THERE WERE NO TEMPERATURE RECORDS
BROKEN IN OCTOBER.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.08 INCHES...WHICH WAS 97
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON
THE 8TH...WHEN 0.49 INCHES OF PRECIPITATION FELL. THIS BROKE THE
PREVIOUS RECORD OF 0.39...SET IN 1995. TOTAL SNOWFALL FOR OCTOBER
WAS 5.6 INCHES...WHICH IS 1.8 INCHES BELOW NORMAL...OR 76 PERCENT.
THE SNOWIEST DAY WAS THE 8TH...WITH 3.6 INCHES FALLING. THE HIGHEST
WIND GUST WAS 54 MPH ON THE 7TH AND 20TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              87   10/05/1993
                        10/01/1992
 LOW               -3   10/30/1971
HIGHEST            74   10/19
                        10/17
LOWEST              9   10/31
AVG. MAXIMUM     57.6              59.4    -1.8
AVG. MINIMUM     29.8              31.0    -1.2
MEAN             43.7              45.2    -1.5
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     18
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.62   1998
 MINIMUM            T   1956
TOTALS           1.08              1.11   -0.03
DAILY AVG.       0.03              0.04   -0.01
DAYS >= .01         7
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.49   10/08 TO 10/08

SNOWFALL (INCHES)
TOTALS            5.6               7.4    -1.8
SINCE 7/1         5.6               9.2    -3.6
DAYS >= 1.0         1

DEGREE_DAYS
HEATING TOTAL     653               614      39
 SINCE 7/1        952               899      53
COOLING TOTAL       0                 0       0
 SINCE 1/1        448               422      26
.................................................

WIND (MPH)
AVERAGE WIND SPEED              13.1
RESULTANT WIND SPEED/DIRECTION   8/242
HIGHEST WIND SPEED/DIRECTION    46/240    DATE  10/07
HIGHEST GUST SPEED/DIRECTION    54/250    DATE  10/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     51

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       2
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                8     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

LOOKING AHEAD TO NOVEMBER 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 53 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 27 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 37
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 16. THE AVERAGE MONTHLY
PRECIPITATION IS 0.76 INCHES.

$$


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