513
CDUS45 KRIW 180743
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
143 AM MDT FRI APR 18 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR APRIL 17 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM MM MM 56 2001 41 MM MM
MINIMUM MM MM -6 2020 17 MM MM
AVERAGE MM 29 MM MM
PRECIPITATION (IN)
YESTERDAY MM 0.60 2004 0.08 MM MM
MONTH TO DATE 0.00 1.36 -1.36 0.70
SINCE MAR 1 0.00 3.26 -3.26 5.01
SINCE JAN 1 3.70 6.76 -3.06 9.48
DEGREE DAYS
HEATING
YESTERDAY MM 36 MM MM
MONTH TO DATE MM 647 MM 504
SINCE MAR 1 MM 2005 MM 1872
SINCE JUL 1 6920 10209 -3289 9346
COOLING
YESTERDAY MM 0 MM MM
MONTH TO DATE MM 0 MM 0
SINCE MAR 1 MM 0 MM 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED MM HIGHEST WIND DIRECTION MM
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED MM
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER MM
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST MM
LOWEST MM
AVERAGE MM
......................................................
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 2025.........SUNRISE 6:32 AM MDT SUNSET 8:11 PM MDT
APRIL 19 2025.........SUNRISE 6:30 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page