969
CDUS45 KRIW 290045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 28 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 28 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 65 9:29 AM 86 2001 68 -3 78
2024
MINIMUM 52 6:06 AM 26 1999 39 13 48
AVERAGE 59 54 5 63
PRECIPITATION (IN)
TODAY T 0.56 2014 0.03 -0.03 T
MONTH TO DATE 1.55 0.70 0.85 0.99
SINCE SEP 1 1.55 0.70 0.85 0.99
SINCE JAN 1 4.52 7.06 -2.54 7.24
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 6 12 -6 2
MONTH TO DATE 71 180 -109 93
SINCE SEP 1 71 180 -109 93
SINCE JUL 1 73 216 -143 96
COOLING
TODAY 0 0 0 0
MONTH TO DATE 44 28 16 37
SINCE SEP 1 44 28 16 37
SINCE JAN 1 757 496 261 611
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 8.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80
LOWEST 46
AVERAGE 63
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 90 2024
MINIMUM TEMPERATURE (F) 39 29 1999
SUNRISE AND SUNSET
SEPTEMBER 28 2026.....SUNRISE 7:08 AM MDT SUNSET 7:00 PM MDT
SEPTEMBER 29 2026.....SUNRISE 7:09 AM MDT SUNSET 6:58 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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