Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS55 KRIW 011853 CLMP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1235 PM MDT FRI SEP 01 2023 ...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE FOR THE MONTH OF AUGUST 2023... ...OFFICIAL CLIMATE DATA FOR THE MONTH OF AUGUST 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 WITH RECORD RAINFALL IN AUGUST... AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN AUGUST WAS 54.5 DEGREES WHICH IS 0.6 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS 81 DEGREES ON THE 15TH, 16TH AND 17TH. THE 15TH HIGH TIED 2003. THE COLDEST READING OF THE MONTH WAS ON THE 31ST WITH 31 DEGREES. TOTAL PRECIPITATION AT LAKE YELLOWSTONE WAS 4.37 INCHES... WHICH WAS 326 PERCENT OF NORMAL AND THE FIRST WETTEST AUGUST SINCE RECORDS STARTED IN 1998. THIS BROKE THE PREVIOUS MONTHLY RECORD OF 4.29 INCHES SET IN 2014. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS THE 3RD-4TH WHEN 1.15 INCHES OF PRECIPITATION FELL. THE 3RD HAD 0.88 AND BROKE THE 2002 RECORD OF 0.50. THE 4TH HAD 0.41 INCHES AND BROKE 0.28 FROM 2003. THE 20TH HAD 0.83 INCHES AND BROKE THE 2021 RECORD OF 0.34. THE 26TH HAD 0.28 INCHES AND BROKE THE 2004 RECORD OF 0.26. THE HIGHEST WIND GUST WAS 34 MPH FROM THE SOUTHWEST ON THE 30TH. ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF AUGUST 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 85 08/17/2020 LOW 25 08/31/2005 HIGHEST 81 08/15 08/16 08/17 LOWEST 31 08/31 AVG. MAXIMUM 67.9 70.7 -2.8 AVG. MINIMUM 41.0 37.0 4.0 MEAN 54.5 53.9 0.6 DAYS MAX >= 90 0 DAYS MAX <= 32 0 DAYS MIN <= 32 1 DAYS MIN <= 0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 4.29 2014 MINIMUM 0.13 2012 TOTALS 4.37R 1.34 3.03 2.76 DAILY AVG. 0.15 0.04 0.11 DAYS >= .01 18 DAYS >= .10 9 DAYS >= .50 3 DAYS >= 1.00 0 GREATEST 24 HR. TOTAL 1.15 08/03 TO 08/04 STORM TOTAL 0.88 DEGREE DAYS HEATING TOTAL 321 346 -25 SINCE 7/1 533 641 -108 COOLING TOTAL 0 0 0 SINCE 1/1 0 0 0 .............................................................. WIND (MPH) AVERAGE WIND SPEED 1.9 RESULTANT WIND SPEED/DIRECTION 0/090 HIGHEST WIND SPEED/DIRECTION 18/280 DATE 08/30 HIGHEST GUST SPEED/DIRECTION 34/240 DATE 08/30 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) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 9 LIGHT RAIN 12 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 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 SEPTEMBER 2023...THE AVERAGE HIGH TEMPERATURE ON THE FIRST OF THE MONTH IS 67 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 33 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 53 DEGREES AND THE AVERAGE LOW TEMPERATURE IS 27 DEGREES. THE AVERAGE MONTHLY PRECIPITATION IS 1.57 INCHES. $$