Climatological Report (Daily)
Issued by NWS
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752
CDUS45 KRIW 310727
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT MON AUG 31 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 30 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 60 3:53 PM 78 2001 67 -7 68
2008
2016
MINIMUM 33 11:59 PM 27 2005 34 -1 36
AVERAGE 47 50 -3 52
PRECIPITATION (IN)
YESTERDAY 0.18 0.86 2014 0.05 0.13 0.00
MONTH TO DATE 2.72 1.29 1.43 1.09
SINCE JUN 1 5.68 5.18 0.50 2.48
SINCE JAN 1 13.92 15.21 -1.29 11.71
DEGREE DAYS
HEATING
YESTERDAY 18 14 4 13
MONTH TO DATE 236 330 -94 272
SINCE JUN 1 866 1164 -298 945
SINCE JUL 1 352 626 -274 503
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 18 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 4.2
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 6:00 AM
LOWEST 22 5:00 PM
AVERAGE 61
..........................................................
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 2026........SUNRISE 6:43 AM MDT SUNSET 8:00 PM MDT
SEPTEMBER 1 2026.....SUNRISE 6:44 AM MDT SUNSET 7:58 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$