274
CDUS45 KRIW 180045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT THU SEP 17 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 17 2026
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 76 2:53 PM 85 2004 74 2 69
2018
MINIMUM 54 7:26 AM 34 1996 44 10 45
AVERAGE 65 59 6 57
PRECIPITATION (IN)
TODAY 0.01 0.44 2002 0.02 -0.01 0.00
MONTH TO DATE 0.01 0.34 -0.33 0.08
SINCE SEP 1 0.01 0.34 -0.33 0.08
SINCE JAN 1 2.98 6.70 -3.72 6.33
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 0 7 -7 8
MONTH TO DATE 21 77 -56 45
SINCE SEP 1 21 77 -56 45
SINCE JUL 1 23 113 -90 48
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 43 27 16 36
SINCE SEP 1 43 27 16 36
SINCE JAN 1 756 495 261 610
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 8.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66
LOWEST 34
AVERAGE 50
......................................................
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 2026.....SUNRISE 6:56 AM MDT SUNSET 7:20 PM MDT
SEPTEMBER 18 2026.....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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