980
CDUS45 KRIW 170730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT MON AUG 17 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 16 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 70 3:17 PM 82 2013 71 -1 72
MINIMUM 39 6:10 AM 28 2009 37 2 42
AVERAGE 55 54 1 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.12 2004 0.04 -0.04 0.02
MONTH TO DATE 1.75 0.68 1.07 0.07
SINCE JUN 1 4.71 4.57 0.14 1.46
SINCE JAN 1 12.95 14.60 -1.65 10.69
DEGREE DAYS
HEATING
YESTERDAY 10 11 -1 8
MONTH TO DATE 129 152 -23 146
SINCE JUN 1 759 986 -227 819
SINCE JUL 1 245 448 -203 377
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 14 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 2.2
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 12:00 AM
LOWEST 25 3:00 PM
AVERAGE 63
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 85 2020
MINIMUM TEMPERATURE (F) 37 28 2009
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 6:27 AM MDT SUNSET 8:24 PM MDT
AUGUST 18 2026........SUNRISE 6:28 AM MDT SUNSET 8:22 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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