507
CDUS45 KRIW 020728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT TUE SEP 02 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 1 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 72 MM 80 2022 67 5 79
MINIMUM 35 MM 25 2006 33 2 36
AVERAGE 54 50 4 58
PRECIPITATION (IN)
YESTERDAY 0.00 1.08 2012 0.05 -0.05 0.00
MONTH TO DATE 0.00 0.05 -0.05 0.00
SINCE SEP 1 0.00 0.05 -0.05 0.00
SINCE JAN 1 11.71 15.31 -3.60 15.19
DEGREE DAYS
HEATING
YESTERDAY 11 15 -4 7
MONTH TO DATE 11 15 -4 7
SINCE SEP 1 11 15 -4 7
SINCE JUL 1 527 657 -130 584
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 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 1.6
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 6:00 AM
LOWEST 23 5:00 PM
AVERAGE 60
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 79 2007
2017
2019
MINIMUM TEMPERATURE (F) 33 25 2006
SUNRISE AND SUNSET
SEPTEMBER 2 2025.....SUNRISE 6:46 AM MDT SUNSET 7:56 PM MDT
SEPTEMBER 3 2025.....SUNRISE 6:47 AM MDT SUNSET 7:54 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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