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 SAT SEP 12 2026
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 11 2026...
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)
YESTERDAY
MAXIMUM 86 3:15 PM 87 2004 77 9 86
2017
2018
MINIMUM 53 11:59 PM 30 2014 46 7 60
AVERAGE 70 61 9 73
PRECIPITATION (IN)
YESTERDAY 0.00 1.11 0.02 -0.02 0.00
MONTH TO DATE T 0.20 -0.20 T
SINCE SEP 1 T 0.20 -0.20 T
SINCE JAN 1 2.97 6.56 -3.59 6.25
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 3 41 -38 12
SINCE SEP 1 3 41 -38 12
SINCE JUL 1 5 77 -72 15
COOLING
YESTERDAY 5 1 4 8
MONTH TO DATE 42 21 21 36
SINCE SEP 1 42 21 21 36
SINCE JAN 1 755 489 266 610
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 12.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 55 11:00 PM
LOWEST 12 4:00 PM
AVERAGE 34
..........................................................
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 2026.....SUNRISE 6:50 AM MDT SUNSET 7:29 PM MDT
SEPTEMBER 13 2026.....SUNRISE 6:51 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.
$$