Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 070726
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
126 AM MDT SUN SEP 07 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 6 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 70 4:48 PM 82 2022 65 5 72
MINIMUM 30 5:54 AM 22 2010 32 -2 35
AVERAGE 50 49 1 54
PRECIPITATION (IN)
YESTERDAY 0.00 0.93 2002 0.05 -0.05 0.00
MONTH TO DATE 0.00 0.29 -0.29 0.14
SINCE SEP 1 0.00 0.29 -0.29 0.14
SINCE JAN 1 11.71 15.55 -3.84 15.33
DEGREE DAYS
HEATING
YESTERDAY 15 16 -1 11
MONTH TO DATE 67 94 -27 62
SINCE SEP 1 67 94 -27 62
SINCE JUL 1 583 736 -153 639
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 10 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 2.6
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 89 6:00 AM
LOWEST 26 5:00 PM
AVERAGE 58
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 83 2022
MINIMUM TEMPERATURE (F) 32 23 2010
SUNRISE AND SUNSET
SEPTEMBER 7 2025.....SUNRISE 6:52 AM MDT SUNSET 7:46 PM MDT
SEPTEMBER 8 2025.....SUNRISE 6:53 AM MDT SUNSET 7:45 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$