Climatological Report (Daily)
Issued by NWS
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CDUS45 KRIW 080728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON SEP 08 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 7 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 66 3:20 PM 83 2022 64 2 74
MINIMUM 41 2:54 AM 23 2010 32 9 34
AVERAGE 54 48 6 54
PRECIPITATION (IN)
YESTERDAY 0.76R 0.49 2002 0.05 0.71 0.00
MONTH TO DATE 0.76 0.34 0.42 0.14
SINCE SEP 1 0.76 0.34 0.42 0.14
SINCE JAN 1 12.47 15.60 -3.13 15.33
DEGREE DAYS
HEATING
YESTERDAY 11 17 -6 11
MONTH TO DATE 78 111 -33 73
SINCE SEP 1 78 111 -33 73
SINCE JUL 1 594 753 -159 650
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 17 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 2.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 7:00 AM
LOWEST 47 4:00 PM
AVERAGE 74
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 79 2021
MINIMUM TEMPERATURE (F) 32 21 2020
SUNRISE AND SUNSET
SEPTEMBER 8 2025.....SUNRISE 6:53 AM MDT SUNSET 7:45 PM MDT
SEPTEMBER 9 2025.....SUNRISE 6:54 AM MDT SUNSET 7:43 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$