Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 100728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SUN AUG 10 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 9 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 67 4:29 PM 80 2018 72 -5 73
MINIMUM 30 4:49 AM 28 2002 39 -9 40
AVERAGE 49 56 -7 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.52 2017 0.05 -0.05 0.00
MONTH TO DATE 0.01 0.39 -0.38 0.10
SINCE JUN 1 1.40 4.28 -2.88 1.84
SINCE JAN 1 10.63 14.31 -3.68 14.04
DEGREE DAYS
HEATING
YESTERDAY 16 10 6 8
MONTH TO DATE 92 80 12 53
SINCE JUN 1 765 914 -149 744
SINCE JUL 1 323 376 -53 315
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 10 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 2.3
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 82 5:00 AM
LOWEST 15 3:00 PM
AVERAGE 49
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 83 2018
MINIMUM TEMPERATURE (F) 38 30 2002
SUNRISE AND SUNSET
AUGUST 10 2025........SUNRISE 6:19 AM MDT SUNSET 8:34 PM MDT
AUGUST 11 2025........SUNRISE 6:20 AM MDT SUNSET 8:33 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$