Climatological Report (Monthly)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CXUS55 KRIW 012349
CLMRKS

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

..PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SWEETWATER COUNTY
AIRPORT NEAR ROCK SPRINGS 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 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...

...DECEMBER WAS MUCH WARMER AND DRIER THAN NORMAL IN ROCK SPRINGS...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN DECEMBER WAS 28.4
DEGREES...WHICH WAS 7.3 DEGREES ABOVE NORMAL. IT WAS THE 4TH
WARMEST DECEMBER ON RECORD. THE WARMEST READING OF THE MONTH
WAS 51 DEGREES ON THE 3RD.  A RECORD HIGH OF 47 DEGREES WAS SET
ON THE 29TH...BREAKING THE PREVIOUS RECORD OF 46 SET IN 1980.
THE COLDEST READING WAS 5 DEGREES ON THE 23RD.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.11 INCHES. WHICH IS ONLY 22
PERCENT OF NORMAL. IT WAS THE 8TH DRIEST DECEMBER ON RECORD. THE
WETTEST 24 HOUR PERIOD WAS THE 3RD...WHEN 0.05 OF AN INCH FELL. NO
PRECIPITATION RECORDS WERE SET DURING THE MONTH.
THE HIGHEST WIND GUST WAS 52 MPH ON THE 28TH.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER
2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              58   12/16/2013
 LOW              -29   12/22/1990
                        12/21/1990
                        12/31/1978
HIGHEST            51   12/03
LOWEST              5   12/23
AVG. MAXIMUM     38.1              29.8     8.3
AVG. MINIMUM     18.6              12.5     6.1
MEAN             28.4              21.1     7.3
DAYS MAX >= 90      0
DAYS MAX <= 32     10
DAYS MIN <= 32     31
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.78   1975
 MINIMUM         0.00   1962
TOTALS           0.11              0.50   -0.39
DAILY AVG.       0.00              0.02   -0.02
DAYS >= .01         3
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.05   12/03 TO 12/03

DEGREE_DAYS
HEATING TOTAL    1127              1359    -232
 SINCE 7/1       3007              3352    -345
COOLING TOTAL       0                 0       0
 SINCE 1/1        394               286     108
.................................................

WIND (MPH)
AVERAGE WIND SPEED              14.6
RESULTANT WIND SPEED/DIRECTION  13/249
HIGHEST WIND SPEED/DIRECTION    41/270    DATE  12/28
HIGHEST GUST SPEED/DIRECTION    52/270    DATE  12/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     56

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                2     SNOW                       3
LIGHT SNOW               11     SLEET                      0
FOG                      10     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 30 DEGREES... AND THE AVERAGE LOW TEMPERATURE
IS 12 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 31
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 12 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.45 INCHES.

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.