Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 150728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SAT AUG 15 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 14 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 58 12:54 PM 84 2003 71 -13 78
MINIMUM 41 11:59 PM 29 2005 38 3 39
AVERAGE 50 54 -4 59
PRECIPITATION (IN)
YESTERDAY 0.05 0.33 2015 0.05 0.00 0.00
MONTH TO DATE 0.52 0.60 -0.08 0.05
SINCE JUN 1 3.48 4.49 -1.01 1.44
SINCE JAN 1 11.72 14.52 -2.80 10.67
DEGREE DAYS
HEATING
YESTERDAY 15 10 5 6
MONTH TO DATE 104 130 -26 133
SINCE JUN 1 734 964 -230 806
SINCE JUL 1 220 426 -206 364
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 2 0 2 1
SINCE JAN 1 2 0 2 1
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 1.6
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 3:00 AM
LOWEST 74 6:00 PM
AVERAGE 87
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 81 2003
2023
MINIMUM TEMPERATURE (F) 37 29 2009
SUNRISE AND SUNSET
AUGUST 15 2026........SUNRISE 6:25 AM MDT SUNSET 8:27 PM MDT
AUGUST 16 2026........SUNRISE 6:26 AM MDT SUNSET 8:25 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$