Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 250726
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
126 AM MDT FRI SEP 25 2026
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 24 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 62 3:31 PM 74 2009 57 5 63
2011
MINIMUM 31 3:33 AM 13 2000 28 3 29
AVERAGE 47 42 5 46
PRECIPITATION (IN)
YESTERDAY 0.00 0.65 2005 0.06 -0.06 0.00
MONTH TO DATE 1.57 1.24 0.33 1.36
SINCE SEP 1 1.57 1.24 0.33 1.36
SINCE JAN 1 15.49 16.50 -1.01 13.07
DEGREE DAYS
HEATING
YESTERDAY 18 22 -4 19
MONTH TO DATE 396 445 -49 384
SINCE SEP 1 396 445 -49 384
SINCE JUL 1 764 1087 -323 900
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JAN 1 2 0 2 1
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 1.5
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 34 1:00 PM
AVERAGE 67
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 74 2015
MINIMUM TEMPERATURE (F) 28 20 2000
2018
SUNRISE AND SUNSET
SEPTEMBER 25 2026.....SUNRISE 7:12 AM MDT SUNSET 7:13 PM MDT
SEPTEMBER 26 2026.....SUNRISE 7:14 AM MDT SUNSET 7:11 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$