419
CDUS45 KRIW 031331
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT WED SEP 03 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 2 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 76 4:29 PM 79 2007 66 10 77
2017
2019
MINIMUM 37 6:19 PM 25 2006 33 4 36
AVERAGE 57 50 7 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.33 2013 0.04 -0.04 0.00
MONTH TO DATE 0.00 0.09 -0.09 0.00
SINCE SEP 1 0.00 0.09 -0.09 0.00
SINCE JAN 1 11.71 15.35 -3.64 15.19
DEGREE DAYS
HEATING
YESTERDAY 8 15 -7 8
MONTH TO DATE 19 30 -11 15
SINCE SEP 1 19 30 -11 15
SINCE JUL 1 535 672 -137 592
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 9 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 2.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER MM
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST MM
LOWEST MM
AVERAGE MM
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 80 2022
MINIMUM TEMPERATURE (F) 33 27 2010
SUNRISE AND SUNSET
SEPTEMBER 3 2025.....SUNRISE 6:47 AM MDT SUNSET 7:54 PM MDT
SEPTEMBER 4 2025.....SUNRISE 6:48 AM MDT SUNSET 7:52 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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