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
983
CXUS55 KRIW 022235
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
335 PM MST MON NOV 02 2020

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF OCTOBER 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

...OCTOBER WAS COLD AND DRY FOR GREYBULL...

THE AVERAGE TEMPERATURE FOR GREYBULL FOR THE MONTH OF OCTOBER WAS
42.4 DEGREES...WHICH WAS -3.6 DEGREES BELOW NORMAL. THIS RANKS
OCTOBER THE 4TH COLDEST ON RECORD. THE WARMEST READING OF THE MONTH
WAS 84 DEGREES ON THE 6TH AND THE 8TH. THE COLDEST READING WAS -8
DEGREES ON THE 26TH WHICH SET A NEW MONTHLY RECORD LOW TEMPERATURE
WHEN A 18 SET IN 2001 WAS BROKEN. THERE WERE NUMEROUS DAILY
TEMPERATURE RECORDS BROKE IN OCTOBER AT GREYBULL. THE 7TH SAW AN 82
BREAK AN 81 SET BACK IN 2003. THE 16TH SAW A LOW OF 22 BREAK A 23
SET IN 2013. THE 22ND HAD A LOW OF 19 BREAK A 21 SET IN 2002. ON THE
23RD A 12 BROKE A 20 SET IN 2002. ON THE 24TH A 14 BREAK A 22 SET IN
2006. THE 25TH SAW A -5 SHATTER A 17 RECORD SET IN 2001. ALSO ON THE
25TH A RECORD COLD HIGH WAS SET WHEN A 17 BROKE A 27 SET IN 2012.
LASTLY A 3 BROKE A 14 DEGREE RECORD SET IN 2019.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.4 INCHES. THIS IS 67 PERCENT
OF NORMAL...AND THE 10TH DRIEST OCTOBER SINCE RECORDS BEGAN IN 1998.
THE WETTEST DAY OF THE MONTH WAS THE 18TH WITH 0.15 INCHES. ONLY ONE
DAILY PRECIPITATION RECORD WAS BROKEN IN OCTOBER. ON THE 18TH 0.15
INCHES BROKE A 0.04 FROM 2004. THE HIGHEST WIND GUST WAS 52 MPH ON
THE 11TH.

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

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

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           84   10/06
                       10/08
LOWEST            -8R  10/26
AVG. MAXIMUM    57.5               59.9    -2.4
AVG. MINIMUM    27.3               32.0    -4.7
MEAN            42.4               46.0    -3.6
DAYS MAX >= 90     0
DAYS MAX <= 32     4
DAYS MIN <= 32    16
DAYS MIN <= 0      2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        2.48   2011
 MINIMUM           T   2017
TOTALS          0.40               0.60   -0.20     0.59
DAILY AVG.      0.01               0.02   -0.01
DAYS >= .01        9
DAYS >= .10        1
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.23   10/18 TO 10/19
 STORM TOTAL    0.15

SNOWFALL (INCHES)
TOTALS            MM                 MM      MM
SINCE 7/1         MM                 MM      MM
SNOWDEPTH AVG.    MM
DAYS >= 1.0       MM

DEGREE DAYS
HEATING TOTAL    692                591     101
 SINCE 7/1       854                820      34
COOLING TOTAL      0                  0       0
 SINCE 1/1       862                669     193
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
RESULTANT WIND SPEED/DIRECTION   3/320
HIGHEST WIND SPEED/DIRECTION    38/340    DATE  10/11
HIGHEST GUST SPEED/DIRECTION    52/330    DATE  10/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.32
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                5     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0
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 2020...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.

$$



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