Climatological Report (Daily)
Issued by NWS
Issued by NWS
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136
CDUS45 KRIW 130733
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT WED AUG 13 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR AUGUST 12 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 84 2003 72 7 71
MINIMUM 43 3:44 AM 31 2004 38 5 38
AVERAGE 61 55 6 55
PRECIPITATION (IN)
YESTERDAY 0.01 0.12 2022 0.04 -0.03 0.03
MONTH TO DATE 0.02 0.51 -0.49 0.33
SINCE JUN 1 1.41 4.40 -2.99 2.07
SINCE JAN 1 10.64 14.43 -3.79 14.27
DEGREE DAYS
HEATING
YESTERDAY 4 10 -6 10
MONTH TO DATE 123 110 13 88
SINCE JUN 1 796 944 -148 779
SINCE JUL 1 354 406 -52 350
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 15 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 2.9
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 76 6:00 AM
LOWEST 19 5:00 PM
AVERAGE 48
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 83 2003
MINIMUM TEMPERATURE (F) 38 30 2002
2006
SUNRISE AND SUNSET
AUGUST 13 2025........SUNRISE 6:23 AM MDT SUNSET 8:30 PM MDT
AUGUST 14 2025........SUNRISE 6:24 AM MDT SUNSET 8:28 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$