Climatological Report (Daily)
Issued by NWS
Issued by NWS
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964
CDUS45 KRIW 120728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT WED AUG 12 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 11 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 79 4:33 PM 83 2018 72 7 73
MINIMUM 40 5:36 AM 33 2004 38 2 36
AVERAGE 60 55 5 55
PRECIPITATION (IN)
YESTERDAY 0.00 0.09 2024 0.04 -0.04 0.00
MONTH TO DATE 0.00 0.47 -0.47 0.01
SINCE JUN 1 2.96 4.36 -1.40 1.40
SINCE JAN 1 11.20 14.39 -3.19 10.63
DEGREE DAYS
HEATING
YESTERDAY 5 10 -5 10
MONTH TO DATE 71 100 -29 119
SINCE JUN 1 701 934 -233 792
SINCE JUL 1 187 396 -209 350
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 15 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 2.9
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 67 5:00 AM
LOWEST 12 1:00 PM
AVERAGE 40
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 84 2003
MINIMUM TEMPERATURE (F) 38 31 2004
SUNRISE AND SUNSET
AUGUST 12 2026........SUNRISE 6:21 AM MDT SUNSET 8:31 PM MDT
AUGUST 13 2026........SUNRISE 6:22 AM MDT SUNSET 8:30 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$