Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 200729
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT THU AUG 20 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 19 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 73 5:08 PM 81 2013 70 3 79
MINIMUM 38 5:22 AM 28 2015 37 1 38
AVERAGE 56 53 3 59
PRECIPITATION (IN)
YESTERDAY 0.00 0.28 2005 0.04 -0.04 0.00
MONTH TO DATE 2.03 0.81 1.22 0.09
SINCE JUN 1 4.99 4.70 0.29 1.48
SINCE JAN 1 13.23 14.73 -1.50 10.71
DEGREE DAYS
HEATING
YESTERDAY 9 12 -3 6
MONTH TO DATE 154 186 -32 168
SINCE JUN 1 784 1020 -236 841
SINCE JUL 1 270 482 -212 399
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 13 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 2.2
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 1:00 AM
LOWEST 24 5:00 PM
AVERAGE 62
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 81 2013
MINIMUM TEMPERATURE (F) 36 27 2016
SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE 6:30 AM MDT SUNSET 8:19 PM MDT
AUGUST 21 2026........SUNRISE 6:32 AM MDT SUNSET 8:17 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$