916
CDUS45 KRIW 120731
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1231 AM MST FRI DEC 12 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 11 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 49 3:17 PM 63 2004 31 18 37
MINIMUM 34 11:59 PM -17 2000 9 25 16
AVERAGE 42 20 22 27
PRECIPITATION (IN)
YESTERDAY 0.00 T 2002 0.00 0.00 0.00
2003
2012
MONTH TO DATE 0.20 0.04 0.16 T
SINCE DEC 1 0.20 0.04 0.16 T
SINCE JAN 1 7.03 5.48 1.55 6.28
DEGREE DAYS
HEATING
YESTERDAY 23 45 -22 38
MONTH TO DATE 364 478 -114 381
SINCE DEC 1 364 478 -114 381
SINCE JUL 1 1737 2255 -518 1776
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 15 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 6.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 10:00 PM
LOWEST 56 3:00 PM
AVERAGE 69
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 31 51 2014
MINIMUM TEMPERATURE (F) 8 -15 2000
SUNRISE AND SUNSET
DECEMBER 12 2025......SUNRISE 7:40 AM MST SUNSET 4:33 PM MST
DECEMBER 13 2025......SUNRISE 7:41 AM MST SUNSET 4:33 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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