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000
CXUS55 KRIW 031801
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1053 AM MST WED JAN 03 2024

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF
DECEMBER 2023...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 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

...DECEMBER WAS MUCH WARMER AND DRIER THAN NORMAL FOR CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN DECEMBER WAS 32 DEGREES WHICH
WAS 7.2 DEGREES ABOVE NORMAL. IT WAS THE 4TH WARMEST DECEMBER ON
RECORD. THE WARMEST READING FOR THE MONTH WAS 56 DEGREES ON THE 6TH.
THE 19TH HIT 55 DEGREES AND BROKE 51 FROM 2004. THE 21ST TIED 1969
WITH A HIGH OF 53 DEGREES. THE COLDEST TEMPERATURE WAS 0 DEGREES ON
THE 25TH.

PRECIPITATION FOR THE MONTH WAS 0.06 INCHES...WHICH IS 10 PERCENT OF
NORMAL. IT WAS THE 2ND DRIEST DECEMBER. THE DRIEST ON RECORD IS 1952
WITH 0.03 INCHES. THE WETTEST 24-HOUR PERIOD WAS ON THE 23RD-24TH
WHEN 0.04 INCHES FELL. NO PRECIPITATION RECORDS WERE BROKEN.

SNOWFALL FOR THE MONTH WAS 1 INCH WHICH IS 9 PERCENT OF NORMAL. THE
SNOWIEST 24-HOURS WAS ON THE 23RD WITH 0.6 INCHES. IT WAS THE LEAST
MONTHLY SNOW ON RECORD...BREAKING 1.5 INCHES FROM 1952. THE HIGHEST
WIND GUST WAS 66 MPH FROM THE SOUTHWEST ON THE 7TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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             66   12/02/2021
 LOW             -42   12/22/2022
HIGHEST           56   12/06
LOWEST             0   12/25
AVG. MAXIMUM    42.6               34.7     7.9
AVG. MINIMUM    21.5               14.8     6.7
MEAN            32.0               24.8     7.2
DAYS MAX >= 90     0
DAYS MAX <= 32     3
DAYS MIN <= 32    27
DAYS MIN <= 0      1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.71   1982
 MINIMUM        0.03   1952
TOTALS          0.06               0.61   -0.55     0.74
DAILY AVG.      0.00               0.02   -0.02
DAYS >= .01        4
DAYS >= .10        0
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.04   12/23 TO 12/24
 STORM TOTAL    0.03

SNOWFALL (INCHES)
TOTALS           1.0               11.0   -10.0
SINCE 7/1       14.3               28.4   -14.1
SNOWDEPTH AVG.     T
DAYS >= 1.0        0

DEGREE DAYS
HEATING TOTAL   1014               1248    -234
 SINCE 7/1      2679               3048    -369
COOLING TOTAL      0                  0       0
 SINCE 1/1       342                443    -101
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              13.7
RESULTANT WIND SPEED/DIRECTION  11/230
HIGHEST WIND SPEED/DIRECTION    49/250    DATE  12/07
HIGHEST GUST SPEED/DIRECTION    66/250    DATE  12/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.24
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     60

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

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

LOOKING AHEAD TO JANUARY 2024. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 34 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 14 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 36
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 15. THE AVERAGE MONTHLY
PRECIPITATION IS 0.49 INCHES. THE AVERAGE MONTHLY SNOWFALL IS 9
INCHES.

$$