298
CDUS45 KRIW 160732
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1232 AM MST TUE DEC 16 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 15 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 50 3:22 PM 57 2006 30 20 42
MINIMUM 16 7:41 AM -21 2008 8 8 20
AVERAGE 33 19 14 31
PRECIPITATION (IN)
YESTERDAY 0.00 0.01 2004 0.00 0.00 0.00
MONTH TO DATE 0.20 0.05 0.15 T
SINCE DEC 1 0.20 0.05 0.15 T
SINCE JAN 1 7.03 5.49 1.54 6.28
DEGREE DAYS
HEATING
YESTERDAY 32 46 -14 34
MONTH TO DATE 502 661 -159 525
SINCE DEC 1 502 661 -159 525
SINCE JUL 1 1875 2438 -563 1920
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 13 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 2.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 2:00 AM
LOWEST 39 3:00 PM
AVERAGE 66
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 30 45 1998
MINIMUM TEMPERATURE (F) 7 -16 2008
SUNRISE AND SUNSET
DECEMBER 16 2025......SUNRISE 7:43 AM MST SUNSET 4:33 PM MST
DECEMBER 17 2025......SUNRISE 7:43 AM MST SUNSET 4:34 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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