Climatological Report (Daily)
Issued by NWS
Issued by NWS
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683
CDUS45 KRIW 080731
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT TUE SEP 08 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 7 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 54 3:00 PM 83 2022 64 -10 66
MINIMUM 31 11:38 PM 23 2010 32 -1 41
AVERAGE 43 48 -5 54
PRECIPITATION (IN)
YESTERDAY 0.11 0.76 2025 0.05 0.06 0.76
MONTH TO DATE 0.33 0.34 -0.01 0.76
SINCE SEP 1 0.33 0.34 -0.01 0.76
SINCE JAN 1 14.25 15.60 -1.35 12.47
DEGREE DAYS
HEATING
YESTERDAY 22 17 5 11
MONTH TO DATE 98 111 -13 78
SINCE SEP 1 98 111 -13 78
SINCE JUL 1 466 753 -287 594
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JAN 1 2 0 2 1
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 4.3
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 96 3:00 AM
LOWEST 36 5:00 PM
AVERAGE 66
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 79 2021
MINIMUM TEMPERATURE (F) 32 21 2020
SUNRISE AND SUNSET
SEPTEMBER 8 2026.....SUNRISE 6:53 AM MDT SUNSET 7:45 PM MDT
SEPTEMBER 9 2026.....SUNRISE 6:54 AM MDT SUNSET 7:43 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$