Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 200726
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
126 AM MDT WED AUG 20 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 19 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 79 5:11 PM 81 2013 70 9 75
MINIMUM 38 6:02 AM 28 2015 37 1 47
AVERAGE 59 53 6 61
PRECIPITATION (IN)
YESTERDAY 0.00 0.28 2005 0.04 -0.04 0.00
MONTH TO DATE 0.09 0.81 -0.72 0.96
SINCE JUN 1 1.48 4.70 -3.22 2.70
SINCE JAN 1 10.71 14.73 -4.02 14.90
DEGREE DAYS
HEATING
YESTERDAY 6 12 -6 4
MONTH TO DATE 168 186 -18 167
SINCE JUN 1 841 1020 -179 858
SINCE JUL 1 399 482 -83 429
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 1 0 1 0
SINCE JAN 1 1 0 1 0
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 1.1
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 85 5:00 AM
LOWEST 11 6:00 PM
AVERAGE 48
..........................................................
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 2025........SUNRISE 6:31 AM MDT SUNSET 8:18 PM MDT
AUGUST 21 2025........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.
$$