Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 300730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SUN AUG 30 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 29 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 61 1:20 PM 78 2005 68 -7 63
MINIMUM 43 11:18 PM 26 2024 34 9 35
AVERAGE 52 51 1 49
PRECIPITATION (IN)
YESTERDAY 0.22R 0.13 2003 0.05 0.17 0.04
MONTH TO DATE 2.54 1.24 1.30 1.09
SINCE JUN 1 5.50 5.13 0.37 2.48
SINCE JAN 1 13.74 15.16 -1.42 11.71
DEGREE DAYS
HEATING
YESTERDAY 13 14 -1 16
MONTH TO DATE 218 316 -98 259
SINCE JUN 1 848 1150 -302 932
SINCE JUL 1 334 612 -278 490
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 (270)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 1.5
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 97 6:00 AM
LOWEST 62 1:00 PM
AVERAGE 80
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 78 2001
2008
2016
MINIMUM TEMPERATURE (F) 34 27 2005
SUNRISE AND SUNSET
AUGUST 30 2026........SUNRISE 6:42 AM MDT SUNSET 8:01 PM MDT
AUGUST 31 2026........SUNRISE 6:43 AM MDT SUNSET 8:00 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$