Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011645 CCA
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1010 AM MDT WED NOV 01 2023

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR GREYBULL FOR THE MONTH OF
OCTOBER 2023...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF OCTOBER 2023 WILL BE
AVAILABLE IN APPROXIMATELY 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

...GREYBULL WAS COLDER AND WETTER THAN NORMAL IN OCTOBER...

THE AVERAGE TEMPERATURE FOR GREYBULL IN OCTOBER WAS 44.7 DEGREES
WHICH WAS 1.8  DEGREES BELOW NORMAL. THE WARMEST READING FOR THE
MONTH WAS 80 DEGREES ON THE 10TH. THE 16TH HAD 73 DEGREES AND BROKE
70 FROM 2012. THE 20TH HIT 77 AND TIED 2014. THE COLDEST TEMPERATURE
WAS -1 DEGREES ON THE 27TH. THE LOW ON THE 28TH OF 6 DEGREES BROKE
THE 2019 RECORD OF 11.

PRECIPITATION FOR THE MONTH WAS 0.99 INCHES...WHICH IS 190 PERCENT
OF NORMAL. THE WETTEST 24-HOUR PERIOD OCCURRED ON THE 25-26TH WITH
0.39 INCHES. THE 3RD HAD 0.02 INCHES AND BROKE THE 2006 RECORD OF A
TRACE. THE 23RD HAD 0.29 INCHES AND BROKE 0.12 FROM 2022. THE 25TH
HAD 0.27 AND BROKE 0.21 INCHES FROM 2000. THE 26TH HAD 0.12 INCHES
AND BROKE THE 2019 RECORD OF A TRACE. THE HIGHEST WIND GUST WAS 53
MPH FROM THE NORTHWEST ON THE 12TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             87   10/02/2018
 LOW              -8   10/26/2020
HIGHEST           80   10/10
LOWEST            -1   10/27
AVG. MAXIMUM    58.3               59.9    -1.6
AVG. MINIMUM    31.0               33.1    -2.1
MEAN            44.7               46.5    -1.8
DAYS MAX >= 90     0
DAYS MAX <= 32     4
DAYS MIN <= 32     9
DAYS MIN <= 0      1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        2.48   2011
 MINIMUM           T   2017
TOTALS          0.99               0.60    0.39     0.23
DAILY AVG.      0.03               0.02    0.01
DAYS >= .01        8
DAYS >= .10        4
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.39   10/25 TO 10/26
 STORM TOTAL    0.29

DEGREE DAYS
HEATING TOTAL    621                575      46
 SINCE 7/1       695                762     -67
COOLING TOTAL      0                  2      -2
 SINCE 1/1       702                744     -42
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.0
RESULTANT WIND SPEED/DIRECTION   3/320
HIGHEST WIND SPEED/DIRECTION    39/340    DATE  10/12
HIGHEST GUST SPEED/DIRECTION    53/340    DATE  10/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.31
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                4     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

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

LOOKING AHEAD TO NOVEMBER 2023...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 52 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 26 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 36
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 12 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.19 INCHES.

$$


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