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CXUS55 KRIW 020946
CLMCPR

CYSCLMCPR 000
TTAA00 KRIW 020912


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
346 AM MDT TUE OCT 2 2012

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE NATRONA COUNTY
INTERNATIONAL AIRPORT NEAR CASPER FOR THE MONTH OF SEPTEMBER 2012...

..OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 2012 WILL BE
AVAILABLE APPROXIMATELY IN NOVEMBER 2012 FROM THE NATIONAL CLIMATIC
DATA CENTER HTTP://WWW.NCDC.NOAA.GOV/OL/CLIMATEDATA.HTML).
UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE INTERNET AT
HTTP://WWW.CRH.NOAA.GOV/RIW/CLIMATE/...

...SEPTEMBER IN CASPER WAS DRIER AND WARMER THAN AVERAGE...

THE AVERAGE TEMPERATURE FOR CASPER IN SEPTEMBER WAS 61.2
DEGREES...WHICH WAS 3.3 DEGREES ABOVE NORMAL. THE WARMEST DAILY HIGH
FOR SEPTEMBER 2012 WAS 90 DEGREES. THIS OCCURRED ON THE 10TH OF THE
MONTH. THE COOLEST READING FOR SEPTEMBER WAS 31 DEGREES WHICH
OCCURRED ON THE 14TH. THERE WERE NO RECORD TEMPERATURES SET IN
SEPTEMBER.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.31 INCHES...WHICH WAS 29
PERCENT OF NORMAL. THE WETTEST DAY OF THE MONTH WAS ON THE
6TH...WHEN 0.12 OF AN INCH OF PRECIPITATION FELL.


...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              97   09/01/1995
 LOW               15   09/28/1945
HIGHEST            90   09/10        MM      MM
LOWEST             31   09/14        MM      MM
AVG. MAXIMUM     79.4              74.3     5.1
AVG. MINIMUM     42.9              41.4     1.5
MEAN             61.2              57.9     3.3
DAYS MAX >= 90      1
DAYS MAX <= 32      0
DAYS MIN <= 32      1
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.40   1982
 MINIMUM         0.07   1956
TOTALS           0.31              1.08   -0.77
DAILY AVG.       0.01              0.04   -0.03
DAYS >= .01         7
DAYS >= .10         1
DAYS >= .50         0
DAYS >= 1.00        0

SNOWFALL (INCHES)
TOTALS            0.0               1.8    -1.8
SINCE 7/1         0.0               1.8    -1.8
DAYS >= 1.0         0

DEGREE_DAYS
HEATING TOTAL     139               239    -100
 SINCE 7/1        149               285    -136
COOLING TOTAL      32                25       7
 SINCE 1/1        697               422     275
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.3
RESULTANT WIND SPEED/DIRECTION   4/258
HIGHEST WIND SPEED/DIRECTION    31/MM     DATE   MM
HIGHEST GUST SPEED/DIRECTION    52/MM     DATE   MM

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           28
NUMBER OF DAYS PC              2
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     42

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       2     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 OCTOBER 2012...THE AVERAGE HIGH TEMPERATURE ON
THE FIRST OF THE MONTH IS 67 DEGREES...AND THE AVERAGE LOW
TEMPERATURE IS 37 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH
IS 51 DEGREES...AND THE AVERAGE LOW IS 27 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.14 INCHES. THE AVERAGE SNOWFALL IS 7.1
INCHES.

$$