CDUS45 KRIW 120731 CLIP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1231 AM MST FRI DEC 12 2025 ................................... ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 11 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 37 2:12 PM 41 2014 23 14 18 MINIMUM 34 11:59 PM -17 2007 3 31 10 AVERAGE 36 13 23 14 PRECIPITATION (IN) YESTERDAY 0.00 0.08 2015 0.07 -0.07 0.00 MONTH TO DATE 0.95 0.79 0.16 0.07 SINCE DEC 1 0.95 0.79 0.16 0.07 SINCE JAN 1 18.69 21.53 -2.84 18.45 DEGREE DAYS HEATING YESTERDAY 29 52 -23 51 MONTH TO DATE 462 557 -95 514 SINCE DEC 1 462 557 -95 514 SINCE JUL 1 3420 4064 -644 3621 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 13 HIGHEST WIND DIRECTION W (260) HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION S (200) AVERAGE WIND SPEED 5.3 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 85 2:00 AM LOWEST 62 2:00 PM AVERAGE 74 .......................................................... THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 23 46 2014 MINIMUM TEMPERATURE (F) 3 -9 2020 SUNRISE AND SUNSET DECEMBER 12 2025......SUNRISE 7:49 AM MST SUNSET 4:42 PM MST DECEMBER 13 2025......SUNRISE 7:50 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. $$