838
CDUS45 KRIW 180045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT WED SEP 17 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 17 2025
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 69 3:42 PM 85 2004 74 -5 68
2018
MINIMUM 45 6:34 AM 34 1996 44 1 46
AVERAGE 57 59 -2 57
PRECIPITATION (IN)
TODAY 0.00 0.44 2002 0.02 -0.02 0.01
MONTH TO DATE 0.08 0.34 -0.26 0.07
SINCE SEP 1 0.08 0.34 -0.26 0.07
SINCE JAN 1 6.33 6.70 -0.37 5.50
SNOWFALL (IN)
TODAY MM 0.0
MONTH TO DATE 0.0 0.0
SINCE SEP 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 8 7 1 8
MONTH TO DATE 45 77 -32 32
SINCE SEP 1 45 77 -32 32
SINCE JUL 1 48 113 -65 50
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 36 27 9 47
SINCE SEP 1 36 27 9 47
SINCE JAN 1 610 495 115 589
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 6.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82
LOWEST 29
AVERAGE 56
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 90 2014
MINIMUM TEMPERATURE (F) 44 28 2003
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 6:56 AM MDT SUNSET 7:19 PM MDT
SEPTEMBER 18 2025.....SUNRISE 6:57 AM MDT SUNSET 7:18 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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