954
CDUS45 KRIW 180728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON SEP 18 2023
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 17 2023
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM MM MM 73 2009 60 MM 54
2020
MINIMUM MM MM 24 2003 30 MM 31
2017
AVERAGE MM 45 MM 43
PRECIPITATION (IN)
YESTERDAY 0.00 0.68 2013 0.05 -0.05 0.02
MONTH TO DATE 1.88 0.85 1.03 0.83
SINCE SEP 1 1.88 0.85 1.03 0.83
SINCE JAN 1 19.91 16.11 3.80 18.84
DEGREE DAYS
HEATING
YESTERDAY MM 20 MM 22
MONTH TO DATE 246 296 -50 216
SINCE SEP 1 246 296 -50 216
SINCE JUL 1 779 938 -159 660
COOLING
YESTERDAY MM 0 MM 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 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) 60 75 2009
MINIMUM TEMPERATURE (F) 30 18 2003
SUNRISE AND SUNSET
SEPTEMBER 18 2023.....SUNRISE 7:04 AM MDT SUNSET 7:27 PM MDT
SEPTEMBER 19 2023.....SUNRISE 7:05 AM MDT SUNSET 7:25 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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