967 CDUS45 KRIW 040730 CLIP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1230 AM MST THU DEC 04 2025 ................................... ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 3 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 27 2:52 PM 41 2021 25 2 36 MINIMUM 1 8:28 AM -20 2009 5 -4 9 AVERAGE 14 15 -1 23 PRECIPITATION (IN) YESTERDAY 0.00 0.84 2007 0.08 -0.08 0.00 MONTH TO DATE 0.07 0.22 -0.15 0.00 SINCE DEC 1 0.07 0.22 -0.15 0.00 SINCE JAN 1 17.81 20.96 -3.15 18.38 DEGREE DAYS HEATING YESTERDAY 51 50 1 42 MONTH TO DATE 150 149 1 134 SINCE DEC 1 150 149 1 134 SINCE JUL 1 3108 3656 -548 3241 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1 0 1 0 ................................................................... WIND (MPH) HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (270) HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 1.6 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 91 3:00 AM LOWEST 44 3:00 PM AVERAGE 68 .......................................................... THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 25 38 2021 MINIMUM TEMPERATURE (F) 5 -18 2013 SUNRISE AND SUNSET DECEMBER 4 2025......SUNRISE 7:42 AM MST SUNSET 4:42 PM MST DECEMBER 5 2025......SUNRISE 7:43 AM MST SUNSET 4:42 PM MST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$