Climatological Report (Daily)
Issued by NWS
Issued by NWS
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072
CDUS45 KRIW 310728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SUN AUG 31 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 30 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 68 4:58 PM 78 2001 67 1 74
2008
2016
MINIMUM 36 6:31 AM 27 2005 34 2 31
AVERAGE 52 50 2 53
PRECIPITATION (IN)
YESTERDAY 0.00 0.86 2014 0.05 -0.05 0.00
MONTH TO DATE 1.09 1.29 -0.20 1.25
SINCE JUN 1 2.48 5.18 -2.70 2.99
SINCE JAN 1 11.71 15.21 -3.50 15.19
DEGREE DAYS
HEATING
YESTERDAY 13 14 -1 12
MONTH TO DATE 272 330 -58 305
SINCE JUN 1 945 1164 -219 996
SINCE JUL 1 503 626 -123 567
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 1 0 1 0
SINCE JAN 1 1 0 1 0
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 2.0
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 100 2:00 AM
LOWEST 26 5:00 PM
AVERAGE 63
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 79 2016
MINIMUM TEMPERATURE (F) 34 25 2005
SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE 6:44 AM MDT SUNSET 7:59 PM MDT
SEPTEMBER 1 2025.....SUNRISE 6:45 AM MDT SUNSET 7:57 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$