625
CDUS45 KRIW 180728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SAT APR 18 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR APRIL 17 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 25 3:30 PM 56 2001 41 -16 32
MINIMUM 5 6:02 AM -6 2020 17 -12 17
AVERAGE 15 29 -14 25
PRECIPITATION (IN)
YESTERDAY 0.01 0.60 2004 0.08 -0.07 0.22
MONTH TO DATE 1.61 1.36 0.25 1.01
SINCE MAR 1 2.72 3.26 -0.54 1.50
SINCE JAN 1 6.07 6.76 -0.69 5.20
DEGREE DAYS
HEATING
YESTERDAY 50 36 14 40
MONTH TO DATE 545 647 -102 627
SINCE MAR 1 1604 2005 -401 771
SINCE JUL 1 8574 10209 -1635 7691
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 4.1
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 88 11:00 PM
LOWEST 65 12:00 PM
AVERAGE 77
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 41 54 2001
MINIMUM TEMPERATURE (F) 17 -10 2013
SUNRISE AND SUNSET
APRIL 18 2026.........SUNRISE 6:32 AM MDT SUNSET 8:10 PM MDT
APRIL 19 2026.........SUNRISE 6:31 AM MDT SUNSET 8:12 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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