Climatological Report (Daily)
Issued by NWS
Issued by NWS
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946
CDUS45 KRIW 050735
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
135 AM MDT FRI SEP 05 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 4 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 12:20 PM 81 2022 66 6 68
MINIMUM 35 6:15 AM 27 2011 33 2 31
2014
AVERAGE 54 49 5 50
PRECIPITATION (IN)
YESTERDAY 0.00 0.41 2007 0.05 -0.05 0.00
MONTH TO DATE 0.00 0.19 -0.19 0.14
SINCE SEP 1 0.00 0.19 -0.19 0.14
SINCE JAN 1 11.71 15.45 -3.74 15.33
DEGREE DAYS
HEATING
YESTERDAY 11 16 -5 15
MONTH TO DATE 38 62 -24 38
SINCE SEP 1 38 62 -24 38
SINCE JUL 1 554 704 -150 615
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 12 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 2.5
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 88 6:00 AM
LOWEST 22 12:00 PM
AVERAGE 55
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 82 2020
MINIMUM TEMPERATURE (F) 33 24 2008
SUNRISE AND SUNSET
SEPTEMBER 5 2025.....SUNRISE 6:49 AM MDT SUNSET 7:50 PM MDT
SEPTEMBER 6 2025.....SUNRISE 6:51 AM MDT SUNSET 7:48 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$