CDUS45 KRIW 210732 CLIGEY CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 132 AM MDT MON SEP 21 2026 ................................... ...THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 20 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 63 4:24 PM 85 2016 75 -12 84 MINIMUM 51 11:40 PM 31 1999 43 8 48 AVERAGE 57 59 -2 66 PRECIPITATION (IN) YESTERDAY 0.12 0.30 2004 0.04 0.08 0.00 MONTH TO DATE 0.15 0.51 -0.36 0.12 SINCE SEP 1 0.15 0.51 -0.36 0.12 SINCE JAN 1 2.49 4.33 -1.84 4.32 DEGREE DAYS HEATING YESTERDAY 8 7 1 0 MONTH TO DATE 39 79 -40 41 SINCE SEP 1 39 79 -40 41 SINCE JUL 1 41 98 -57 41 COOLING YESTERDAY 0 1 -1 1 MONTH TO DATE 55 43 12 46 SINCE SEP 1 55 43 12 46 SINCE JAN 1 853 739 114 787 ................................................................... WIND (MPH) HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (330) HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 6.4 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 97 5:00 AM LOWEST 67 4:00 PM AVERAGE 82 .......................................................... THE GREYBULL WY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 74 86 2013 2015 2025 MINIMUM TEMPERATURE (F) 43 32 1999 2000 2021 SUNRISE AND SUNSET SEPTEMBER 21 2026.....SUNRISE 6:58 AM MDT SUNSET 7:11 PM MDT SEPTEMBER 22 2026.....SUNRISE 7:00 AM MDT SUNSET 7:09 PM MDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$