759
CDUS45 KRIW 150728
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST MON DEC 15 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 14 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 2:38 PM 59 2021 31 17 41
MINIMUM 19 7:45 AM -19 2008 8 11 12
AVERAGE 34 19 15 27
PRECIPITATION (IN)
YESTERDAY 0.00 T 2020 0.00 0.00 T
2022
2024
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 31 46 -15 38
MONTH TO DATE 470 615 -145 491
SINCE DEC 1 470 615 -145 491
SINCE JUL 1 1843 2392 -549 1886
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 9 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 2.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 7:00 AM
LOWEST 49 2:00 PM
AVERAGE 71
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 30 57 2006
MINIMUM TEMPERATURE (F) 8 -21 2008
SUNRISE AND SUNSET
DECEMBER 15 2025......SUNRISE 7:42 AM MST SUNSET 4:33 PM MST
DECEMBER 16 2025......SUNRISE 7:43 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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