Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 280734
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
134 AM MDT FRI AUG 28 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 27 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 77 12:46 PM 79 2011 68 9 59
2012
2017
MINIMUM 40 6:15 AM 29 2019 35 5 49
AVERAGE 59 51 8 54
PRECIPITATION (IN)
YESTERDAY 0.00 1.03 2018 0.05 -0.05 0.28
MONTH TO DATE 2.11 1.15 0.96 0.37
SINCE JUN 1 5.07 5.04 0.03 1.76
SINCE JAN 1 13.31 15.07 -1.76 10.99
DEGREE DAYS
HEATING
YESTERDAY 6 14 -8 11
MONTH TO DATE 195 288 -93 225
SINCE JUN 1 825 1122 -297 898
SINCE JUL 1 311 584 -273 456
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 2 0 2 1
SINCE JAN 1 2 0 2 1
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 2.4
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 93 5:00 AM
LOWEST 24 5:00 PM
AVERAGE 59
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 82 2012
MINIMUM TEMPERATURE (F) 34 28 2008
SUNRISE AND SUNSET
AUGUST 28 2026........SUNRISE 6:40 AM MDT SUNSET 8:05 PM MDT
AUGUST 29 2026........SUNRISE 6:41 AM MDT SUNSET 8:03 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$