Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 012143 CCA
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
240 PM MST FRI FEB 1 2019

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL FOR THE MONTH OF JANUARY 2019...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 2019 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 MUCH WARMER AND MUCH DRIER THAN NORMAL FOR GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL FOR THE MONTH OF JANUARY WAS
21.5 DEGREES. THIS WAS 4.6 DEGREES ABOVE NORMAL...MAKING IT THE 4TH
WARMEST JANUARY ON RECORD SINCE 1998. THE WARMEST READING OF THE
MONTH WAS 47 DEGREES ON THE 6TH...AND THE COLDEST READING WAS 14
BELOW ON THE 1ST. ONE DAILY HIGH RECORD WAS SET ON THE 6TH WITH 47
DEGREES...BREAKING THE OLD RECORD OF 46 SET BACK IN 2006.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.04 INCHES....WHICH WAS ONLY
17 PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD WAS ON THE
23RD...WHEN 0.02 INCHES FELL. NO DAILY RECORDS WERE BROKEN. THE
HIGHEST WIND GUST WAS 57 MPH ON THE 21ST.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              55   01/23/2005
 LOW              -37   01/27/2009
HIGHEST            47   01/06
LOWEST            -14   01/01
AVG. MAXIMUM     33.6              28.9     4.7
AVG. MINIMUM      9.3               4.9     4.4
MEAN             21.5              16.9     4.6
DAYS MAX >= 90      0
DAYS MAX <= 32     14
DAYS MIN <= 32     31
DAYS MIN <= 0       4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.42   2008
 MINIMUM         0.00   2006
                        2005
TOTALS           0.04              0.23   -0.19
DAILY AVG.       0.00              0.01   -0.01
DAYS >= .01         2
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.02   01/23 TO 01/23
                        01/07 TO 01/07

DEGREE_DAYS
HEATING TOTAL    1342              1491    -149
 SINCE 7/1       4532              4814    -282
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              4.9
HIGHEST WIND SPEED/DIRECTION    45/330    DATE  01/21
HIGHEST GUST SPEED/DIRECTION    57/340    DATE  01/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     76

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                1     SNOW                        0
LIGHT SNOW                4     SLEET                       0
FOG                       7     FOG W/VIS <= 1/4 MILE       3
HAZE                      1

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

LOOKING AHEAD TO FEBRUARY 2019...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 31 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 7 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 43
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 17 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.18 INCHES.

$$


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