021
CDUS45 KRIW 090730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SUN AUG 09 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 8 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 80 1:24 PM 82 2012 73 7 63
MINIMUM 40 5:57 AM 31 2004 39 1 38
AVERAGE 60 56 4 51
PRECIPITATION (IN)
YESTERDAY 0.00 0.82 2019 0.04 -0.04 0.00
MONTH TO DATE 0.00 0.34 -0.34 0.01
SINCE JUN 1 2.96 4.23 -1.27 1.40
SINCE JAN 1 11.20 14.26 -3.06 10.63
DEGREE DAYS
HEATING
YESTERDAY 5 9 -4 14
MONTH TO DATE 58 70 -12 76
SINCE JUN 1 688 904 -216 749
SINCE JUL 1 174 366 -192 307
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 23 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 3.5
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 79 5:00 AM
LOWEST 15 2:00 PM
AVERAGE 47
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THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 80 2018
MINIMUM TEMPERATURE (F) 39 28 2002
SUNRISE AND SUNSET
AUGUST 9 2026........SUNRISE 6:18 AM MDT SUNSET 8:36 PM MDT
AUGUST 10 2026........SUNRISE 6:19 AM MDT SUNSET 8:34 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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