Climatological Report (Daily)
Issued by NWS
Issued by NWS
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801 CDUS45 KRIW 210729 CLIP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 129 AM MDT SAT SEP 21 2024 ................................... ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 20 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2024 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 58 4:12 PM 69 2012 59 -1 59 2016 MINIMUM 29 6:45 AM 20 2000 29 0 29 AVERAGE 44 44 0 44 PRECIPITATION (IN) YESTERDAY 0.00 0.60 2019 0.06 -0.06 0.40 MONTH TO DATE 1.43 1.02 0.41 2.28 SINCE SEP 1 1.43 1.02 0.41 2.28 SINCE JAN 1 16.62 16.28 0.34 20.31 DEGREE DAYS HEATING YESTERDAY 21 21 0 21 MONTH TO DATE 313 358 -45 285 SINCE SEP 1 313 358 -45 285 SINCE JUL 1 890 1000 -110 818 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE SEP 1 0 0 0 0 SINCE JAN 1 0 0 0 0 ................................................................... WIND (MPH) HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (260) HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (250) AVERAGE WIND SPEED 3.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 96 5:00 AM LOWEST 37 3:00 PM AVERAGE 67 .......................................................... THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 58 69 2001 2012 MINIMUM TEMPERATURE (F) 29 22 2004 2021 SUNRISE AND SUNSET SEPTEMBER 21 2024.....SUNRISE 7:08 AM MDT SUNSET 7:20 PM MDT SEPTEMBER 22 2024.....SUNRISE 7:10 AM MDT SUNSET 7:18 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$