276
CDUS45 KRIW 100731
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT WED SEP 10 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 9 2025
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)
YESTERDAY
MAXIMUM 80 3:01 PM 94 2021 77 3 89
MINIMUM 47 4:56 AM 24 2020 47 0 57
AVERAGE 64 62 2 73
PRECIPITATION (IN)
YESTERDAY T 0.10 0.02 -0.02 0.00
MONTH TO DATE T 0.15 -0.15 0.03
SINCE SEP 1 T 0.15 -0.15 0.03
SINCE JAN 1 6.25 6.51 -0.26 5.46
SNOWFALL (IN)
YESTERDAY 0.0 0.0 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 1 4 -3 0
MONTH TO DATE 12 31 -19 3
SINCE SEP 1 12 31 -19 3
SINCE JUL 1 15 67 -52 21
COOLING
YESTERDAY 0 2 -2 8
MONTH TO DATE 25 19 6 38
SINCE SEP 1 25 19 6 38
SINCE JAN 1 599 487 112 580
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 8.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 55 9:00 PM
LOWEST 20 4:00 PM
AVERAGE 38
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THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 90 2021
MINIMUM TEMPERATURE (F) 47 31 2007
SUNRISE AND SUNSET
SEPTEMBER 10 2025.....SUNRISE 6:48 AM MDT SUNSET 7:32 PM MDT
SEPTEMBER 11 2025.....SUNRISE 6:49 AM MDT SUNSET 7:30 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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