Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011631
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
930 AM MST SAT FEB 1 2020

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL FOR THE MONTH OF JANUARY 2020...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 2020 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 DRIER AND MUCH WARMER THAN NORMAL FOR GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL FOR THE MONTH OF JANUARY WAS
28.2 DEGREES...WHICH WAS 11.3 DEGREES ABOVE NORMAL. THIS MAKES IT
THE SECOND WARMEST JANUARY ON RECORD. THE WARMEST READING OF THE
MONTH WAS 50 DEGREES ON THE 21ST. THE COLDEST READING WAS 1 DEGREE
BELOW ZERO ON THE 15TH. FOUR NEW HIGH TEMPERATURE RECORDS WERE
SET...THE 4TH SAW 50 DEGREES...BREAKING THE 2012 RECORD OF 47. THE
7TH HIT 45...BREAKING THE 2006 RECORD OF 43 DEGREES. THE 17TH HAD 48
DEGREES...BREAKING THE 2010 RECORD OF 46...AND THE 22ND HIT 48
DEGREES...BREAKING THE 2005 RECORD OF 44 DEGREES.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.10 INCHES...WHICH WAS 43
PERCENT OF NORMAL...AND TENTH WETTEST JANUARY. THE WETTEST DAY OF
THE MONTH WAS ON THE 30TH...WITH 0.08 INCHES. ON THE 29TH A TRACE OF
PRECIPITATION FELL...WHICH TIED THE 2008 RECORD. THE HIGHEST WIND
GUST WAS 65 MPH ON THE 17TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2020

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              55   01/23/2005
 LOW              -37   01/27/2009
HIGHEST            50   01/21
                        01/04
LOWEST                  01/15
AVG. MAXIMUM     40.5              28.9    11.6
AVG. MINIMUM     15.9               4.9    11.0
MEAN             28.2              16.9    11.3
DAYS MAX >= 90      0
DAYS MAX <= 32      5
DAYS MIN <= 32     31
DAYS MIN <= 0       1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.42   2008
 MINIMUM         0.00   2006
                        2005
TOTALS           0.10              0.23   -0.13
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    0.08   01/30 TO 01/30

DEGREE_DAYS
HEATING TOTAL    1131              1491    -360
 SINCE 7/1       4392              4814    -422
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.1
HIGHEST WIND SPEED/DIRECTION    47/320    DATE  01/17
HIGHEST GUST SPEED/DIRECTION    65/320    DATE  01/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     61

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                        0
LIGHT SNOW                6     SLEET                       0
FOG                       5     FOG W/VIS <= 1/4 MILE       0
HAZE                     12

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

LOOKING AHEAD TO FEBRUARY 2020...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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