436
CDUS45 KRIW 170730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT FRI APR 17 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR APRIL 16 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 33 1:17 AM 53 2025 41 -8 53
MINIMUM 14 11:54 PM -2 1999 17 -3 20
AVERAGE 24 29 -5 37
PRECIPITATION (IN)
YESTERDAY 0.42R 0.42 2006 0.08 0.34 0.08
MONTH TO DATE 1.60 1.28 0.32 0.79
SINCE MAR 1 2.71 3.18 -0.47 1.28
SINCE JAN 1 6.06 6.68 -0.62 4.98
DEGREE DAYS
HEATING
YESTERDAY 41 36 5 28
MONTH TO DATE 495 611 -116 587
SINCE MAR 1 1554 1969 -415 731
SINCE JUL 1 8524 10173 -1649 7651
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 13 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (260)
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 96 3:00 AM
LOWEST 74 5:00 PM
AVERAGE 85
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 41 56 2001
MINIMUM TEMPERATURE (F) 17 -6 2020
SUNRISE AND SUNSET
APRIL 17 2026.........SUNRISE 6:34 AM MDT SUNSET 8:09 PM MDT
APRIL 18 2026.........SUNRISE 6:32 AM MDT SUNSET 8:10 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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