819
CDUS45 KRIW 160821
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
221 AM MDT THU APR 16 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR APRIL 15 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 38 10:52 AM 54 2025 40 -2 54
MINIMUM 27 12:15 AM -5 1999 16 11 15
2001
AVERAGE 33 28 5 35
PRECIPITATION (IN)
YESTERDAY 0.43 0.56 2002 0.08 0.35 0.00
MONTH TO DATE 1.18 1.20 -0.02 0.71
SINCE MAR 1 2.29 3.10 -0.81 1.20
SINCE JAN 1 5.64 6.60 -0.96 4.90
DEGREE DAYS
HEATING
YESTERDAY 32 37 -5 30
MONTH TO DATE 454 575 -121 559
SINCE MAR 1 1513 1933 -420 703
SINCE JUL 1 8483 10137 -1654 7623
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 12 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 3.3
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 100 9:00 PM
LOWEST 63 3:00 AM
AVERAGE 82
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THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 41 53 2025
MINIMUM TEMPERATURE (F) 17 -2 1999
SUNRISE AND SUNSET
APRIL 16 2026.........SUNRISE 6:36 AM MDT SUNSET 8:08 PM MDT
APRIL 17 2026.........SUNRISE 6:34 AM MDT SUNSET 8:09 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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