Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CXUS55 KRIW 012037
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 PM MST THU FEB 1 2018

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF JANUARY 2018...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 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

...JANUARY WAS WARMER AND WETTER THAN NORMAL FOR RIVERTON...

THE AVERAGE TEMPERATURE FOR RIVERTON IN JANUARY WAS 20.5 DEGREES...
WHICH WAS 0.6 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH
WAS 50 DEGREES ON THE 30TH...AND COLDEST WAS -10 DEGREES ON THE 2ND.
ONE NEW DAILY RECORD HIGH WAS TIED ON THE 30TH...WITH 50 DEGREES...
WHICH WAS LAST SET IN 2003.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.38 INCHES...WHICH WAS 158
PERCENT OF NORMAL. THIS MAKES IT THE 5TH WETTEST JANUARY ON RECORD
SINCE 1996. THE WETTEST 24 HOUR PERIOD WAS ON THE 20TH...WHEN 0.37
OF AN INCH FELL. THIS BROKE THE PREVIOUS RECORD OF 0.08 INCHES SET
BACK IN 2007. THE SNOWIEST DAY WAS THE 20TH WHEN 4.9 INCHES FELL...
WHICH ALSO SET A DAILY RECORD BREAKING 4.4 INCHES THAT FELL BACK IN
2008. THE HIGHEST WIND GUST WAS 40 MPH ON THE 30TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              57   01/19/2009
 LOW              -25   01/06/2017
                        01/22/2008
                        01/12/1963
HIGHEST            50   01/30
LOWEST            -10   01/02
AVG. MAXIMUM     31.0              31.3    -0.3
AVG. MINIMUM     10.0               8.5     1.5
MEAN             20.5              19.9     0.6
DAYS MAX >= 90      0
DAYS MAX <= 32     14
DAYS MIN <= 32     31
DAYS MIN <= 0       6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.01   2017
 MINIMUM         0.01   1999
TOTALS           0.38              0.24    0.14
DAILY AVG.       0.01              0.01    0.00
DAYS >= .01         2
DAYS >= .10         1
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.37   01/20 TO 01/20
 STORM TOTAL       MM
 (MM/DD(HH))

SNOWFALL (INCHES)
TOTALS            5.7                MM      MM
SINCE 7/1        24.6                MM      MM
SNOWDEPTH AVG.      3
DAYS >= 1.0         1

DEGREE_DAYS
HEATING TOTAL    1370              1398     -28
 SINCE 7/1       4491              4715    -224
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.8
RESULTANT WIND SPEED/DIRECTION   2/292
HIGHEST WIND SPEED/DIRECTION    35/020    DATE  01/10
HIGHEST GUST SPEED/DIRECTION    40/240    DATE  01/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                6     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      3
HAZE                      5

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

LOOKING AHEAD TO FEBRUARY 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 32 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 10 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 41
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 17. THE AVERAGE MONTHLY
PRECIPITATION IS 0.27 INCHES.

$$



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