522
CDUS45 KRIW 120731
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT SUN APR 12 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR APRIL 11 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 53 10:22 AM 58 2025 40 13 58
MINIMUM 28 6:05 AM -9 1999 15 13 22
AVERAGE 41 27 14 40
PRECIPITATION (IN)
YESTERDAY 0.20 0.51 2022 0.08 0.12 0.00
MONTH TO DATE 0.65 0.87 -0.22 0.46
SINCE MAR 1 1.76 2.77 -1.01 0.95
SINCE JAN 1 5.11 6.27 -1.16 4.65
DEGREE DAYS
HEATING
YESTERDAY 24 38 -14 25
MONTH TO DATE 330 427 -97 423
SINCE MAR 1 1389 1785 -396 567
SINCE JUL 1 8359 9989 -1630 7487
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 23 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 1.9
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 5:00 PM
LOWEST 42 11:00 AM
AVERAGE 69
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THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 40 55 2016
MINIMUM TEMPERATURE (F) 16 -5 2020
2022
SUNRISE AND SUNSET
APRIL 12 2026.........SUNRISE 6:43 AM MDT SUNSET 8:03 PM MDT
APRIL 13 2026.........SUNRISE 6:41 AM MDT SUNSET 8:04 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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