Climatological Report (Monthly)
Issued by NWS
Issued by NWS
414 CXUS55 KRIW 031806 CLMP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1053 AM MST WED JAN 03 2024 ...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE FOR THE MONTH OF DECEMBER 2023... ...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2023 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 ...LAKE YELLOWSTONE WAS WARMER AND DRIER IN DECEMBER... AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN DECEMBER WAS 18.2 DEGREES WHICH IS 5.2 DEGREES ABOVE NORMAL. IT WAS THE WARMEST DECEMBER ON RECORD...BREAKING THE 2014 MONTHLY RECORD OF 18.0 DEGREES. THE WARMEST READING OF THE MONTH WAS 42 DEGREES ON THE 6TH. THE COLDEST READING OF THE MONTH WAS ON THE 25TH WITH 11 DEGREES BELOW ZERO. THERE WERE SEVERAL HIGH TEMPERATURE RECORDS BROKEN: DATE NEW OLD YEAR 6TH 42 35 2015 19TH 39 30 2004 20TH 34 33 2001 21ST 37 (TIE) 37 2019 TOTAL PRECIPITATION AT LAKE YELLOWSTONE WAS 1.17 INCHES... WHICH WAS 50 PERCENT OF NORMAL.THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS THE 7TH-8TH WHEN 0.38 INCHES OF PRECIPITATION FELL. NO PRECIPITATION RECORDS WERE BROKEN THIS MONTH. THE HIGHEST WIND GUST WAS 31 MPH FROM THE SOUTHWEST ON THE 7TH. ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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 46 12/12/2014 LOW -36 12/22/2022 HIGHEST 42 12/06 LOWEST -11 12/25 AVG. MAXIMUM 28.4 23.3 5.1 AVG. MINIMUM 8.0 2.7 5.3 MEAN 18.2 13.0 5.2 DAYS MAX >= 90 0 DAYS MAX <= 32 23 DAYS MIN <= 32 31 DAYS MIN <= 0 7 PRECIPITATION (INCHES) RECORD MAXIMUM 5.15 2007 MINIMUM 0.37 2000 TOTALS 1.17 2.35 -1.18 3.19 DAILY AVG. 0.04 0.08 -0.04 DAYS >= .01 11 DAYS >= .10 5 DAYS >= .50 0 DAYS >= 1.00 0 GREATEST 24 HR. TOTAL 0.38 12/07 TO 12/08 STORM TOTAL 0.31 DEGREE DAYS HEATING TOTAL 1443 1612 -169 SINCE 7/1 4517 5119 -602 COOLING TOTAL 0 0 0 SINCE 1/1 0 0 0 .............................................................. WIND (MPH) AVERAGE WIND SPEED 1.5 RESULTANT WIND SPEED/DIRECTION 0/320 HIGHEST WIND SPEED/DIRECTION 16/290 DATE 12/02 HIGHEST GUST SPEED/DIRECTION 31/240 DATE 12/07 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.00 NUMBER OF DAYS FAIR 31 NUMBER OF DAYS PC 0 NUMBER OF DAYS CLOUDY 0 AVERAGE RH (PERCENT) 81 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 0 LIGHT RAIN 0 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 9 SLEET 0 FOG 0 FOG W/VIS <= 1/4 MILE 0 HAZE 0 - 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 22 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 1 DEGREE. THE AVERAGE HIGH BY THE END OF THE MONTH IS 23 DEGREES AND THE AVERAGE LOW TEMPERATURE IS 0 DEGREES. THE AVERAGE MONTHLY PRECIPITATION IS 1.80 INCHES. $$