559
CDUS45 KRIW 210727
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT TUE OCT 21 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR OCTOBER 20 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 35 3:55 PM 63 2003 44 -9 56
2023
MINIMUM 22 9:57 PM 14 2007 21 1 27
AVERAGE 29 32 -3 42
PRECIPITATION (IN)
YESTERDAY 0.00 0.34 2004 0.06 -0.06 0.00
MONTH TO DATE 2.87 1.15 1.72 0.24
SINCE SEP 1 4.33 2.72 1.61 1.67
SINCE JAN 1 16.04 17.98 -1.94 16.86
DEGREE DAYS
HEATING
YESTERDAY 36 33 3 23
MONTH TO DATE 527 582 -55 423
SINCE SEP 1 1011 1170 -159 902
SINCE JUL 1 1527 1812 -285 1479
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JAN 1 1 0 1 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 4.8
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 11:00 PM
LOWEST 61 4:00 PM
AVERAGE 79
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 63 2003
MINIMUM TEMPERATURE (F) 20 13 2007
SUNRISE AND SUNSET
OCTOBER 21 2025.......SUNRISE 7:45 AM MDT SUNSET 6:27 PM MDT
OCTOBER 22 2025.......SUNRISE 7:46 AM MDT SUNSET 6:25 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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