National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS55 KRIW 011607
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1007 AM MDT WED NOV 01 2023

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER 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

...OCTOBER WAS WETTER THAN NORMAL FOR CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN OCTOBER WAS 45 DEGREES WHICH
WAS 0.3 DEGREES BELOW NORMAL. THE WARMEST READING FOR THE MONTH WAS
78 DEGREES ON THE 19TH. THE COLDEST TEMPERATURE WAS 2 DEGREES ON THE
27TH. NO TEMPERATURE RECORDS WERE BROKEN.

PRECIPITATION FOR THE MONTH WAS 1.88 INCHES...WHICH IS 158 PERCENT
OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 11-12TH WHEN 1.62
INCHES FELL. THE 12TH HAD 1.34 INCHES AND BROKE THE 2021 RECORD OF
0.76.

SNOWFALL FOR THE MONTH WAS 2.8 INCHES WHICH IS 40 PERCENT OF NORMAL.
THE SNOWIEST 24-HOURS WAS ON THE 26TH WITH 2.2 INCHES. NO SNOWFALL
RECORDS WERE BROKEN. THE HIGHEST WIND GUST WAS 61 MPH FROM THE WEST
ON THE 10TH.

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

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             87   10/05/1993
                       10/01/1992
 LOW              -9   10/30/2019
                       10/29/2019
                       11/24/2010
HIGHEST           78   10/10
LOWEST             2   10/27
AVG. MAXIMUM    59.5               59.7    -0.2
AVG. MINIMUM    30.5               30.9    -0.4
MEAN            45.0               45.3    -0.3
DAYS MAX >= 90     0
DAYS MAX <= 32     3
DAYS MIN <= 32    13
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.62   1998
 MINIMUM           T   1956
TOTALS          1.88               1.19    0.69     0.27
DAILY AVG.      0.06               0.04    0.02
DAYS >= .01        7
DAYS >= .10        3
DAYS >= .50        1
DAYS >= 1.00       1
GREATEST
 24 HR. TOTAL   1.62   10/11 TO 10/12
 STORM TOTAL    1.34

SNOWFALL (INCHES)
TOTALS           2.8                7.0    -4.2
SINCE 7/1        2.8                8.5    -5.7
SNOWDEPTH AVG.     T
DAYS >= 1.0        1

DEGREE DAYS
HEATING TOTAL    610                611      -1
 SINCE 7/1       790                872     -82
COOLING TOTAL      0                  1      -1
 SINCE 1/1       342                443    -101
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
RESULTANT WIND SPEED/DIRECTION   3/270
HIGHEST WIND SPEED/DIRECTION    43/270    DATE  10/10
HIGHEST GUST SPEED/DIRECTION    61/260    DATE  10/10

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)     62

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                1     SNOW                       1
LIGHT SNOW                5     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      4
HAZE                      4

-  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 53 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 26 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 39
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 18. THE AVERAGE MONTHLY
PRECIPITATION IS 0.64 INCHES. THE AVERAGE MONTHLY SNOWFALL IS 8.9
INCHES.

$$