Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS55 KRIW 111904 CLMP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1252 PM MDT SUN JUN 11 2023 ...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE FOR THE MONTH OF MAY 2023... ...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 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 THAN NORMAL IN MAY... AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN MAY WAS 42.3 DEGREES WHICH WAS 3.9 DEGREES ABOVE NORMAL. IT WAS THE WARMEST MAY ON RECORD. THE WARMEST READING OF THE MONTH WAS 66 DEGREES ON THE 21ST. THE HIGH OF 62 DEGREES ON THE 1ST TIED 2007. THE 2ND HIT 64 AND BROKE THE 2015 RECORD OF 61. THE 3RD HIT 59 DEGREES AND TIED 2004. THE 22ND HIT 64 DEGREES AND TIED 2001. THE COLDEST READING OF THE MONTH WAS ON THE 6TH AND 10TH WITH 22 DEGREES. TOTAL PRECIPITATION AT LAKE YELLOWSTONE WAS 1.20 INCHES... WHICH WAS 51 PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS THE 4TH-5TH WHEN 0.43 INCHES OF PRECIPITATION FELL. THE 4TH HAD 0.33 INCHES AND BROKE THE 2021 RECORD OF 0.29. THE HIGHEST WIND GUST WAS 31 MPH FROM THE WEST ON THE 7TH. ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF MAY 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 78 05/28/2003 LOW 0 05/07/2010 HIGHEST 66 05/21 LOWEST 22 05/06 05/10 AVG. MAXIMUM 55.7 50.6 5.1 AVG. MINIMUM 28.9 26.3 2.6 MEAN 42.3 38.4 3.9 DAYS MAX >= 90 0 DAYS MAX <= 32 0 DAYS MIN <= 32 26 DAYS MIN <= 0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 4.53 2022 MINIMUM 0.42 2019 TOTALS 1.20 2.35 -1.15 4.53 DAILY AVG. 0.04 0.08 -0.04 DAYS >= .01 14 DAYS >= .10 5 DAYS >= .50 0 DAYS >= 1.00 0 GREATEST 24 HR. TOTAL 0.43 05/04 TO 05/05 STORM TOTAL 0.33 DEGREE DAYS HEATING TOTAL 697 823 -126 SINCE 7/1 11463 11473 -10 COOLING TOTAL 0 0 0 SINCE 1/1 0 0 0 .............................................................. WIND (MPH) AVERAGE WIND SPEED 1.4 RESULTANT WIND SPEED/DIRECTION 1/090 HIGHEST WIND SPEED/DIRECTION 16/270 DATE 05/07 16/280 05/22 HIGHEST GUST SPEED/DIRECTION 31/280 DATE 05/07 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) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 1 LIGHT RAIN 14 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 JUNE 2023...THE AVERAGE HIGH TEMPERATURE ON THE FIRST OF THE MONTH IS 56 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 31 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 68 DEGREES AND THE AVERAGE LOW TEMPERATURE IS 36 DEGREES. THE AVERAGE MONTHLY PRECIPITATION IS 2.38 INCHES. $$