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CDUS45 KRIW 090728
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT WED SEP 09 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 8 2026
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)
YESTERDAY
MAXIMUM 82 4:47 PM 91 2022 78 4 83
MINIMUM 48 5:34 AM 26 2020 47 1 53
AVERAGE 65 62 3 68
PRECIPITATION (IN)
YESTERDAY 0.00 0.11 0.02 -0.02 0.00
MONTH TO DATE T 0.13 -0.13 0.00
SINCE SEP 1 T 0.13 -0.13 0.00
SINCE JAN 1 2.97 6.49 -3.52 6.25
SNOWFALL (IN)
YESTERDAY 0.0 1.0 2020 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 0
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 0
MONTH TO DATE 0 27 -27 11
SINCE SEP 1 0 27 -27 11
SINCE JUL 1 2 63 -61 14
COOLING
YESTERDAY 0 2 -2 3
MONTH TO DATE 33 17 16 25
SINCE SEP 1 33 17 16 25
SINCE JAN 1 746 485 261 599
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WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 10.0
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 32 4:00 AM
LOWEST 12 4:00 PM
AVERAGE 22
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THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 94 2021
MINIMUM TEMPERATURE (F) 47 24 2020
SUNRISE AND SUNSET
SEPTEMBER 9 2026.....SUNRISE 6:47 AM MDT SUNSET 7:34 PM MDT
SEPTEMBER 10 2026.....SUNRISE 6:48 AM MDT SUNSET 7:32 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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