Climatological Report (Monthly)
Issued by NWS
Issued by NWS
575 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. $$