Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011918
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
115 PM MDT SAT SEP 1 2018

..PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE NATRONA COUNTY
INTERNATIONAL AIRPORT NEAR CASPER FOR THE MONTH OF AUGUST 2018...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF AUGUST 2018 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

...AUGUST WAS COLDER AND MUCH DRIER THAN NORMAL FOR CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN AUGUST WAS 67.6 DEGREES. THIS
WAS 1.4 DEGREES BELOW NORMAL. BOTH THE HOTTEST DAY OF THE MONTH AND
THE COLDEST DAY OF THE MONTH BROKE PREVIOUS RECORDS. THE WARMEST
READING OF THE MONTH WAS 100 DEGREES ON THE 12TH...WHICH BROKE THE
1996 RECORD OF 99 DEGREES. THE COLDEST READING WAS 37 DEGREES ON THE
29TH...WHICH BROKE THE 2004 RECORD OF 39 DEGREES.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.33 INCHES...WHICH WAS ONLY
39 PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON
THE 18TH WHEN 0.13 INCHES OF PRECIPITATION FELL. THE HIGHEST WIND
GUST WAS 60 MPH ON THE 26TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             102   08/05/1979
 LOW               29   08/23/2015
HIGHEST           100   08/12
LOWEST             37   08/29
AVG. MAXIMUM     85.8              86.4    -0.6
AVG. MINIMUM     49.3              51.5    -2.2
MEAN             67.6              69.0    -1.4
DAYS MAX >= 90     11
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.79   1941
 MINIMUM         0.02   1950
TOTALS           0.33              0.85   -0.52
DAILY AVG.       0.01              0.03   -0.02
DAYS >= .01         6
DAYS >= .10         1
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.13   08/18 TO 08/18

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

DEGREE_DAYS
HEATING TOTAL      29                30      -1
 SINCE 7/1         36                46     -10
COOLING TOTAL     115               152     -37
 SINCE 1/1        404               397       7
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.2
RESULTANT WIND SPEED/DIRECTION   2/277
HIGHEST WIND SPEED/DIRECTION    40/250    DATE  08/26
HIGHEST GUST SPEED/DIRECTION    60/220    DATE  08/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           27
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     49

THUNDERSTORM              7     MIXED PRECIP                0
HEAVY RAIN                0     RAIN                        3
LIGHT RAIN               13     FREEZING RAIN               0
LT FREEZING RAIN          0     HAIL                        0
HEAVY SNOW                0     SNOW                        0
LIGHT SNOW                0     SLEET                       0
FOG                       8     FOG W/VIS <= 1/4 MILE       0
HAZE                      8

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

LOOKING AHEAD TO SEPTEMBER 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 82 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 47 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 66
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 36. THE AVERAGE MONTHLY
PRECIPITATION IS 1.08 INCHES. THE AVERAGE MONTHLY SNOW IS 1.8 INCHES.

$$


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