858
CDUS45 KRIW 290728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST MON DEC 29 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 28 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 13 3:12 PM 33 2002 23 -10 28
2005
MINIMUM -15 8:32 AM -17 2009 1 -16 22
AVERAGE -1 12 -13 25
PRECIPITATION (IN)
YESTERDAY 0.00 0.38 2005 0.08 -0.08 0.04
MONTH TO DATE 5.42 2.11 3.31 0.88
SINCE DEC 1 5.42 2.11 3.31 0.88
SINCE JAN 1 23.16 22.85 0.31 19.26
DEGREE DAYS
HEATING
YESTERDAY 66 53 13 40
MONTH TO DATE 1136 1453 -317 1234
SINCE DEC 1 1136 1453 -317 1234
SINCE JUL 1 4094 4960 -866 4341
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 10 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 2.1
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 86 9:00 PM
LOWEST 54 12:00 PM
AVERAGE 70
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 23 34 2004
MINIMUM TEMPERATURE (F) 1 -16 2014
SUNRISE AND SUNSET
DECEMBER 29 2025......SUNRISE 7:58 AM MST SUNSET 4:50 PM MST
DECEMBER 30 2025......SUNRISE 7:58 AM MST SUNSET 4:51 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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