CDUS45 KRIW 200730 CLIP60 CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 130 AM MDT WED MAY 20 2026 ................................... ...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 19 2026... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 49 2:01 PM 70 2002 52 -3 44 MINIMUM 16 5:01 AM 15 2003 28 -12 28 AVERAGE 33 40 -7 36 PRECIPITATION (IN) YESTERDAY 0.00 0.38 2005 0.08 -0.08 0.11 MONTH TO DATE 0.09 1.31 -1.22 1.77 SINCE MAR 1 4.01 5.49 -1.48 4.85 SINCE JAN 1 7.36 8.99 -1.63 8.55 DEGREE DAYS HEATING YESTERDAY 32 25 7 29 MONTH TO DATE 460 539 -79 475 SINCE MAR 1 2532 2985 -453 1670 SINCE JUL 1 9502 11189 -1687 8590 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE MAR 1 0 0 0 0 SINCE JAN 1 0 0 0 0 ................................................................... WIND (MPH) HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (270) HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 3.2 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 87 5:00 AM LOWEST 16 2:00 PM AVERAGE 52 .......................................................... THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 52 66 2002 MINIMUM TEMPERATURE (F) 28 17 2003 SUNRISE AND SUNSET MAY 20 2026...........SUNRISE 5:49 AM MDT SUNSET 8:48 PM MDT MAY 21 2026...........SUNRISE 5:48 AM MDT SUNSET 8:49 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$