Climatological Report (Daily)
Issued by NWS
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CDUS45 KRIW 010728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON SEP 01 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 31 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 69 MM 79 2016 67 2 77
MINIMUM 34 MM 25 2005 34 0 33
AVERAGE 52 50 2 55
PRECIPITATION (IN)
YESTERDAY 0.00 0.29 2017 0.05 -0.05 0.00
MONTH TO DATE 1.09 1.34 -0.25 1.25
SINCE JUN 1 2.48 5.23 -2.75 2.99
SINCE JAN 1 11.71 15.26 -3.55 15.19
DEGREE DAYS
HEATING
YESTERDAY 13 15 -2 10
MONTH TO DATE 285 345 -60 315
SINCE JUN 1 958 1179 -221 1006
SINCE JUL 1 516 641 -125 577
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 5 HIGHEST WIND DIRECTION E (99)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
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 96 5:00 AM
LOWEST 33 4:00 PM
AVERAGE 65
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 80 2022
MINIMUM TEMPERATURE (F) 33 25 2006
SUNRISE AND SUNSET
SEPTEMBER 1 2025.....SUNRISE 6:45 AM MDT SUNSET 7:57 PM MDT
SEPTEMBER 2 2025.....SUNRISE 6:46 AM MDT SUNSET 7:56 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$