CDUS45 KRIW 180733 CLIGEY CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 133 AM MDT MON MAY 18 2026 ................................... ...THE GREYBULL WY CLIMATE SUMMARY FOR MAY 17 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 58 MM 89 2006 71 -13 72 MINIMUM 41 4:00 AM 35 1999 44 -3 44 AVERAGE 50 58 -8 58 PRECIPITATION (IN) YESTERDAY 0.00 0.69 2005 0.05 -0.05 T MONTH TO DATE 0.22 0.62 -0.40 1.35 SINCE MAR 1 1.12 1.37 -0.25 2.27 SINCE JAN 1 1.16 1.64 -0.48 2.48 DEGREE DAYS HEATING YESTERDAY 15 8 7 7 MONTH TO DATE 146 187 -41 136 SINCE MAR 1 1265 1577 -312 1416 SINCE JUL 1 5653 7401 -1748 6901 COOLING YESTERDAY 0 1 -1 0 MONTH TO DATE 10 3 7 9 SINCE MAR 1 10 4 6 9 SINCE JAN 1 10 4 6 9 ................................................................... WIND (MPH) HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION NW (330) HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 21.9 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 65 4:00 AM LOWEST 23 4:00 PM AVERAGE 44 .......................................................... THE GREYBULL WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 71 92 2009 MINIMUM TEMPERATURE (F) 45 37 2024 SUNRISE AND SUNSET MAY 18 2026...........SUNRISE 5:41 AM MDT SUNSET 8:37 PM MDT MAY 19 2026...........SUNRISE 5:40 AM MDT SUNSET 8:38 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$