Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 010045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT TUE SEP 30 2025
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 30 2025...
VALID TODAY AS OF 0600 PM LOCAL TIME.
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)
TODAY
MAXIMUM 76 1:14 PM 83 2023 66 10 70
MINIMUM 50 6:36 AM 30 2021 39 11 42
AVERAGE 63 52 11 56
PRECIPITATION (IN)
TODAY T 0.35 2009 0.03 -0.03 0.00
MONTH TO DATE 0.99 0.77 0.22 0.07
SINCE SEP 1 0.99 0.77 0.22 0.07
SINCE JAN 1 7.24 7.13 0.11 5.50
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 2 13 -11 9
MONTH TO DATE 97 205 -108 86
SINCE SEP 1 97 205 -108 86
SINCE JUL 1 100 241 -141 104
COOLING
TODAY 0 0 0 0
MONTH TO DATE 37 31 6 67
SINCE SEP 1 37 31 6 67
SINCE JAN 1 611 499 112 609
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 8.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 71
LOWEST 25
AVERAGE 48
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 84 2005
MINIMUM TEMPERATURE (F) 38 30 2002
SUNRISE AND SUNSET
SEPTEMBER 30 2025.....SUNRISE 7:10 AM MDT SUNSET 6:56 PM MDT
OCTOBER 1 2025.......SUNRISE 7:12 AM MDT SUNSET 6:54 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$