Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011946
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1246 AM MST FRI DEC 1 2017

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF NOVEMBER 2017 WILL BE
AVAILABLE APPROXIMATELY IN JANUARY 2018 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 SLIGHTLY WARMER AND DRIER THAN NORMAL IN NOVEMBER...

THE AVERAGE TEMPERATURE FOR CASPER IN NOVEMBER WAS 38.4 DEGREES.
THIS WAS 5.2 DEGREES ABOVE NORMAL. IT WAS THE 13TH WARMEST NOVEMBER
ON RECORD. THE WARMEST READING OF THE MONTH WAS 67 DEGREES ON THE
26TH...WHICH ALSO BROKE THE PREVIOUS RECORD OF 63 SET IN 1998.
ANOTHER RECORD WAS ALSO BROKEN ON THE 27TH WHEN 66 DEGREES BROKE 64
DEGREES ALSO SET IN 1998.  THE COLDEST READING OF THE MONTH WAS 10
DEGREES ON THE 12TH.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.31 INCHES...WHICH WAS ONLY
41 PERCENT OF NORMAL. IT WAS THE 15TH DRIEST NOVEMBER ON RECORD. THE
WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON THE 17TH...WHEN 0.12
INCHES OF PRECIPITATION FELL. TOTAL SNOWFALL FOR OCTOBER WAS 3.6
INCHES...WHICH IS 6.7 INCHES BELOW NORMAL...OR 35 PERCENT OF NORMAL.
THE SNOWIEST DAY WAS THE 2ND...WITH 1.4 INCHES FALLING. THE HIGHEST
WIND GUST WAS 58 MPH ON THE 29TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 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              72   11/01/2014
                        11/07/1999
                        11/06/1999
 LOW              -27   11/12/2014
HIGHEST            67   11/26
LOWEST             10   11/12
AVG. MAXIMUM     51.3              44.7     6.6
AVG. MINIMUM     25.5              21.6     3.9
MEAN             38.4              33.2     5.2
DAYS MAX >= 90      0
DAYS MAX <= 32      1
DAYS MIN <= 32     24
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.72   1983
 MINIMUM         0.04   1949
TOTALS           0.31              0.76   -0.45
DAILY AVG.       0.01              0.03   -0.02
DAYS >= .01         5
DAYS >= .10         1
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.12   11/17 TO 11/17

SNOWFALL (INCHES)
TOTALS            3.6              10.3    -6.7
SINCE 7/1         9.2              19.5   -10.3
DAYS >= 1.0         2

DEGREE_DAYS
HEATING TOTAL     792               955    -163
 SINCE 7/1       1744              1854    -110
COOLING TOTAL       0                 0       0
 SINCE 1/1        448               422      26
.................................................

WIND (MPH)
AVERAGE WIND SPEED              14.0
RESULTANT WIND SPEED/DIRECTION  10/231
HIGHEST WIND SPEED/DIRECTION    47/210    DATE  11/29
HIGHEST GUST SPEED/DIRECTION    58/210    DATE  11/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     59

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                6     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      4
HAZE                      0

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

LOOKING AHEAD TO DECEMBER 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 37 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 16 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 35
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 15. THE AVERAGE MONTHLY
PRECIPITATION IS 0.49 INCHES.  WINTER OFFICIALLY BEGINS AT 0928
LOCAL TIME ON DECEMBER 21ST.

$$


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