317
CDUS45 KRIW 160727
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT SAT AUG 16 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 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 79 4:12 PM 81 2003 71 8 67
2023
MINIMUM 40 6:12 AM 29 2009 37 3 34
AVERAGE 60 54 6 51
PRECIPITATION (IN)
YESTERDAY 0.00 0.31 2006 0.04 -0.04 0.14
MONTH TO DATE 0.05 0.64 -0.59 0.96
SINCE JUN 1 1.44 4.53 -3.09 2.70
SINCE JAN 1 10.67 14.56 -3.89 14.90
DEGREE DAYS
HEATING
YESTERDAY 5 11 -6 14
MONTH TO DATE 138 141 -3 137
SINCE JUN 1 811 975 -164 828
SINCE JUL 1 369 437 -68 399
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 1 0 1 0
SINCE JAN 1 1 0 1 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 3.0
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 83 6:00 AM
LOWEST 12 2:00 PM
AVERAGE 48
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 82 2013
MINIMUM TEMPERATURE (F) 37 28 2009
SUNRISE AND SUNSET
AUGUST 16 2025........SUNRISE 6:26 AM MDT SUNSET 8:25 PM MDT
AUGUST 17 2025........SUNRISE 6:27 AM MDT SUNSET 8:23 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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