Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 160045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT TUE SEP 15 2026
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 15 2026...
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 71 4:46 PM 90 2000 75 -4 72
2018
MINIMUM 40 6:05 AM 37 2004 45 -5 48
2014
AVERAGE 56 60 -4 60
PRECIPITATION (IN)
TODAY 0.00 0.68 2017 0.02 -0.02 0.07
MONTH TO DATE T 0.29 -0.29 0.07
SINCE SEP 1 T 0.29 -0.29 0.07
SINCE JAN 1 2.97 6.65 -3.68 6.32
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 9 6 3 5
MONTH TO DATE 20 64 -44 26
SINCE SEP 1 20 64 -44 26
SINCE JUL 1 22 100 -78 29
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 43 25 18 36
SINCE SEP 1 43 25 18 36
SINCE JAN 1 756 493 263 610
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.2
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 62
LOWEST 22
AVERAGE 42
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 93 2000
MINIMUM TEMPERATURE (F) 44 35 2006
SUNRISE AND SUNSET
SEPTEMBER 15 2026.....SUNRISE 6:54 AM MDT SUNSET 7:23 PM MDT
SEPTEMBER 16 2026.....SUNRISE 6:55 AM MDT SUNSET 7:22 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$