Climatological Report (Monthly)
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CXUS55 KRIW 020939
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
340 AM MDT FRI NOV 2 2018

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SOUTH BIG HORN COUNTY
AIRPORT NEAR GREYBULL FOR THE MONTH OF OCTOBER 2018...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF OCTOBER 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

...OCTOBER WAS SLIGHTLY COOLER AND DRIER THAN NORMAL FOR GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL FOR THE MONTH OF OCTOBER WAS
45.1 DEGREES. THIS WAS 0.9 DEGREES BELOW NORMAL...WHICH MAKES THIS
THE 6TH COLDEST OCTOBER ON RECORD. THE WARMEST READING OF THE MONTH
WAS 87 DEGREES ON THE 2ND...WHICH BROKE THE OLD DAILY RECORD OF 83
SET IN 2012...AND THE COLDEST READING WAS 17 DEGREES ON THE 15TH AND
31ST. SEVERAL RECORDS WERE SET THIS MONTH. A LOW OF 22 ON THE 14TH
BROKE THE DAILY RECORD OF 25 DEGREES SET IN 2008; A LOW OF 17
DEGREES ON THE 15TH BROKE THE DAILY RECORD OF 25 SET IN 2017; A LOW
OF 23 ON THE 16TH BROKE THE DAILY RECORD OF 25 DEGREES SET IN 2013;
A HIGH OF 73 DEGREES ON THE 28TH BROKE THE DAILY RECORD OF 69 SET IN
2001.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.08 INCHES....WHICH WAS 13
PERCENT OF NORMAL. THIS MADE IT THE 4TH DRIEST OCTOBER ON RECORD.
THE WETTEST 24 HOUR PERIOD WAS THE 13TH...WHEN 0.08 INCHES FELL. THE
HIGHEST WIND GUST WAS 53 MPH ON THE 3RD.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              87   10/02/2018
 LOW                9   10/31/2006
HIGHEST            87R  10/02
LOWEST             17   10/31
                        10/15
AVG. MAXIMUM     59.6              59.9    -0.3
AVG. MINIMUM     30.5              32.0    -1.5
MEAN             45.1              46.0    -0.9
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     17
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.48   2011
 MINIMUM            T   2017
TOTALS           0.08              0.60   -0.52
DAILY AVG.       0.00              0.02   -0.02
DAYS >= .01         1
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.08   10/13 TO 10/13

DEGREE_DAYS
HEATING TOTAL     609               591      18
 SINCE 7/1        785               822     -37
COOLING TOTAL       0                 0       0
 SINCE 1/1        703               669      34
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    43/330    DATE  10/03
HIGHEST GUST SPEED/DIRECTION    53/320    DATE  10/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP                0
HEAVY RAIN                0     RAIN                        0
LIGHT RAIN               10     FREEZING RAIN               0
LT FREEZING RAIN          0     HAIL                        0
HEAVY SNOW                0     SNOW                        1
LIGHT SNOW                1     SLEET                       0
FOG                       2     FOG W/VIS <= 1/4 MILE       1
HAZE                      1

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

LOOKING AHEAD TO NOVEMBER 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 53 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 26 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 34
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 10 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.30 INCHES.

$$


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