Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 120728
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT FRI SEP 12 2025
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 11 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 86 1:02 PM 87 2004 77 9 81
2017
2018
MINIMUM 60 2:00 AM 30 2014 46 14 57
AVERAGE 73 61 12 69
PRECIPITATION (IN)
YESTERDAY 0.00 1.11 0.02 -0.02 0.02
MONTH TO DATE T 0.20 -0.20 0.05
SINCE SEP 1 T 0.20 -0.20 0.05
SINCE JAN 1 6.25 6.56 -0.31 5.48
SNOWFALL (IN)
YESTERDAY 0.0 0.3 2014 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 5 -5 0
MONTH TO DATE 12 41 -29 3
SINCE SEP 1 12 41 -29 3
SINCE JUL 1 15 77 -62 21
COOLING
YESTERDAY 8 1 7 4
MONTH TO DATE 36 21 15 47
SINCE SEP 1 36 21 15 47
SINCE JAN 1 610 489 121 589
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 13.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RELATIVE HUMIDITY (PERCENT)
HIGHEST 44 6:00 AM
LOWEST 11 1:00 PM
AVERAGE 28
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 88 2017
2018
MINIMUM TEMPERATURE (F) 46 28 2014
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 6:51 AM MDT SUNSET 7:28 PM MDT
SEPTEMBER 13 2025.....SUNRISE 6:52 AM MDT SUNSET 7:27 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$