Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 300045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 29 2025
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 29 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 4:24 PM 90 2024 67 9 90
MINIMUM 49 5:00 AM 29 1999 39 10 50
AVERAGE 63 53 10 70
PRECIPITATION (IN)
TODAY 0.00 0.36 2004 0.04 -0.04 0.00
MONTH TO DATE 0.99 0.74 0.25 0.07
SINCE SEP 1 0.99 0.74 0.25 0.07
SINCE JAN 1 7.24 7.10 0.14 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 12 -10 0
MONTH TO DATE 95 192 -97 77
SINCE SEP 1 95 192 -97 77
SINCE JUL 1 98 228 -130 95
COOLING
TODAY 0 0 0 5
MONTH TO DATE 37 28 9 67
SINCE SEP 1 37 28 9 67
SINCE JAN 1 611 496 115 609
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 4.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86
LOWEST 31
AVERAGE 59
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 83 2023
MINIMUM TEMPERATURE (F) 39 30 2021
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.
$$