500
CDUS45 KRIW 150727
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT WED APR 15 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR APRIL 14 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 40 1:40 PM 57 2024 40 0 42
MINIMUM 28 11:59 PM -8 2014 16 12 10
2020
AVERAGE 34 28 6 26
PRECIPITATION (IN)
YESTERDAY 0.00 0.52 2002 0.09 -0.09 0.00
MONTH TO DATE 0.75 1.12 -0.37 0.71
SINCE MAR 1 1.86 3.02 -1.16 1.20
SINCE JAN 1 5.21 6.52 -1.31 4.90
DEGREE DAYS
HEATING
YESTERDAY 31 37 -6 39
MONTH TO DATE 422 538 -116 529
SINCE MAR 1 1481 1896 -415 673
SINCE JUL 1 8451 10100 -1649 7593
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 15 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 2.4
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 82 4:00 AM
LOWEST 56 1:00 PM
AVERAGE 69
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 40 54 2025
MINIMUM TEMPERATURE (F) 16 -5 1999
2001
SUNRISE AND SUNSET
APRIL 15 2026.........SUNRISE 6:37 AM MDT SUNSET 8:07 PM MDT
APRIL 16 2026.........SUNRISE 6:36 AM MDT SUNSET 8:08 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page