077
CDUS45 KRIW 290729
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT MON SEP 29 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 28 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 78 3:14 PM 86 2001 68 10 86
2024
MINIMUM 48 4:18 AM 26 1999 39 9 48
AVERAGE 63 54 9 67
PRECIPITATION (IN)
YESTERDAY T 0.56 0.03 -0.03 0.00
MONTH TO DATE 0.99 0.70 0.29 0.07
SINCE SEP 1 0.99 0.70 0.29 0.07
SINCE JAN 1 7.24 7.06 0.18 5.50
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 2 12 -10 0
MONTH TO DATE 93 180 -87 77
SINCE SEP 1 93 180 -87 77
SINCE JUL 1 96 216 -120 95
COOLING
YESTERDAY 0 0 0 2
MONTH TO DATE 37 28 9 62
SINCE SEP 1 37 28 9 62
SINCE JAN 1 611 496 115 604
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WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 6.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 4:00 AM
LOWEST 28 3:00 PM
AVERAGE 47
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THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 90 2024
MINIMUM TEMPERATURE (F) 39 29 1999
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 7:09 AM MDT SUNSET 6:58 PM MDT
SEPTEMBER 30 2025.....SUNRISE 7:10 AM MDT SUNSET 6:56 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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