Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 012030
CLMBPI

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 PM MST MON JAN 1 2018

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE MILEY MEMORIAL FIELD
IN BIG PINEY FOR THE MONTH OF DECEMBER 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2017 WILL BE
AVAILABLE APPROXIMATELY IN FEBRUARY 2018 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.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...BIG PINEY HAD A MUCH WARMER AND DRIER DECEMBER THAN NORMAL...

THE AVERAGE TEMPERATURE FOR BIG PINEY IN DECEMBER WAS 22.0
DEGREES...WHICH WAS 9.4 DEGREES ABOVE NORMAL. THIS MAKES IT THE
WARMEST DECEMBER ON RECORD. THE COLDEST READING WAS -24 DEGREES ON
THE 24TH. THE WARMEST READING FOR THE MONTH WAS 57 DEGREES ON THE
12TH. THIS BROKE THE PREVIOUS RECORD, AND MANY OTHER HIGH
TEMPERATURE RECORDS WERE ALSO SET:
NEW RECORD (DATE)                          OLD RECORD (YEAR)
51 DEGREES ON THE 8TH...                   49 DEGREES (1987)
50 DEGREES ON THE 9TH...                   46 DEGREES (2014)
52 DEGREES ON THE 10TH...                  49 DEGREES (2014)
56 DEGREES ON THE 11TH...                  42 DEGREES (2004)
57 DEGREES ON THE 12TH...                  46 DEGREES (2004)
45 DEGREES ON THE 20TH TIED...             45 DEGREES (1980)

BIG PINEY HAD A PRECIPITATION TOTAL OF 0.07 INCHES. THIS IS 23
PERCENT OF THE NORMAL AMOUNT OF 0.30 INCHES.  IT WAS THE 5TH DRIEST
DECEMBER ON RECORD. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON
THE 25TH...WHEN 0.07 INCHES FELL. ON THE 27TH A TRACE OF RAIN FELL,
TYING THE RECORD FROM 2007. THE HIGHEST WIND GUST WAS 54 MPH ON
THE 3RD.

...THE BIG PINEY  WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER
2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1976 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              57   12/12/2017
 LOW              -50   12/23/1983
HIGHEST            57R  12/12
LOWEST            -24   12/24
AVG. MAXIMUM     37.9              26.5    11.4
AVG. MINIMUM      6.3              -1.3     7.6
MEAN             22.1              12.6     9.5
DAYS MAX >= 90      0
DAYS MAX <= 32     10
DAYS MIN <= 32     31
DAYS MIN <= 0       7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.39   1983
 MINIMUM            T   2009
                        1989
TOTALS           0.07              0.30   -0.23
DAILY AVG.       0.00
DAYS >= .01         1
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.07   12/25 TO 12/25

DEGREE_DAYS
HEATING TOTAL    1324              1624    -300
 SINCE 7/1       3880              4439    -559
COOLING TOTAL       0                 0       0
 SINCE 1/1         27                35      -8
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.9
HIGHEST WIND SPEED/DIRECTION    45/230    DATE  12/03
HIGHEST GUST SPEED/DIRECTION    54/230    DATE  12/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                2     SNOW                       2
LIGHT SNOW                9     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      2
HAZE                      4

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

LOOKING AHEAD TO JANUARY 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 26 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS -4 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 26
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS -4. THE AVERAGE MONTHLY
PRECIPITATION IS 0.31 INCHES.

$$



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