894
CDUS45 KRIW 100727
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST WED DEC 10 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 9 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 48 1:54 PM 52 2020 32 16 35
MINIMUM 28 8:10 AM -24 2009 9 19 26
AVERAGE 38 20 18 31
PRECIPITATION (IN)
YESTERDAY 0.02R T 2019 0.00 0.02 T
2023
2024
MONTH TO DATE 0.20 0.03 0.17 T
SINCE DEC 1 0.20 0.03 0.17 T
SINCE JAN 1 7.03 5.47 1.56 6.28
DEGREE DAYS
HEATING
YESTERDAY 27 44 -17 34
MONTH TO DATE 314 388 -74 305
SINCE DEC 1 314 388 -74 305
SINCE JUL 1 1687 2165 -478 1700
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 791 744 47 832
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 8.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 8:00 AM
LOWEST 56 1:00 PM
AVERAGE 74
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 32 53 2003
MINIMUM TEMPERATURE (F) 9 -22 2009
SUNRISE AND SUNSET
DECEMBER 10 2025......SUNRISE 7:38 AM MST SUNSET 4:32 PM MST
DECEMBER 11 2025......SUNRISE 7:39 AM MST SUNSET 4:32 PM MST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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