055
CDUS45 KRIW 220728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST MON DEC 22 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 21 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 33 11:59 PM 37 2019 23 10 37
2023
2024
MINIMUM 15 2:33 AM -34 1998 2 13 7
AVERAGE 24 12 12 22
PRECIPITATION (IN)
YESTERDAY 0.65R 0.46 2015 0.08 0.57 0.00
MONTH TO DATE 2.76 1.55 1.21 0.58
SINCE DEC 1 2.76 1.55 1.21 0.58
SINCE JAN 1 20.50 22.29 -1.79 18.96
DEGREE DAYS
HEATING
YESTERDAY 41 53 -12 43
MONTH TO DATE 853 1082 -229 956
SINCE DEC 1 853 1082 -229 956
SINCE JUL 1 3811 4589 -778 4063
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1 0 1 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 1.8
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 100 9:00 PM
LOWEST 74 1:00 AM
AVERAGE 87
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 23 38 2019
MINIMUM TEMPERATURE (F) 2 -36 2022
SUNRISE AND SUNSET
DECEMBER 22 2025......SUNRISE 7:56 AM MST SUNSET 4:45 PM MST
DECEMBER 23 2025......SUNRISE 7:56 AM MST SUNSET 4:46 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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