Climatological Report (Daily)
Issued by NWS
Issued by NWS
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716
CDUS45 KRIW 190730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT WED AUG 19 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 18 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 69 2:09 PM 83 2020 71 -2 78
MINIMUM 44 11:59 PM 29 2015 37 7 37
AVERAGE 57 54 3 58
PRECIPITATION (IN)
YESTERDAY 0.11 1.06 2005 0.05 0.06 0.00
MONTH TO DATE 2.03 0.77 1.26 0.09
SINCE JUN 1 4.99 4.66 0.33 1.48
SINCE JAN 1 13.23 14.69 -1.46 10.71
DEGREE DAYS
HEATING
YESTERDAY 8 11 -3 7
MONTH TO DATE 145 174 -29 162
SINCE JUN 1 775 1008 -233 835
SINCE JUL 1 261 470 -209 393
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 16 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 2.0
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 4:00 AM
LOWEST 34 2:00 PM
AVERAGE 67
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 81 2013
MINIMUM TEMPERATURE (F) 37 28 2015
SUNRISE AND SUNSET
AUGUST 19 2026........SUNRISE 6:29 AM MDT SUNSET 8:20 PM MDT
AUGUST 20 2026........SUNRISE 6:30 AM MDT SUNSET 8:19 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$