Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 110813
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
213 AM MDT FRI SEP 11 2026
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 10 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 85 4:10 PM 90 2021 77 8 87
MINIMUM 52 5:18 AM 31 2007 47 5 49
AVERAGE 69 62 7 68
PRECIPITATION (IN)
YESTERDAY 0.00 0.23 0.03 -0.03 0.00
MONTH TO DATE T 0.18 -0.18 T
SINCE SEP 1 T 0.18 -0.18 T
SINCE JAN 1 2.97 6.54 -3.57 6.25
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 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 36 -33 12
SINCE SEP 1 3 36 -33 12
SINCE JUL 1 5 72 -67 15
COOLING
YESTERDAY 4 1 3 3
MONTH TO DATE 37 20 17 28
SINCE SEP 1 37 20 17 28
SINCE JAN 1 750 488 262 602
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 10.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 25 3:00 AM
LOWEST 9 4:00 PM
AVERAGE 17
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 87 2004
2017
2018
MINIMUM TEMPERATURE (F) 46 30 2014
SUNRISE AND SUNSET
SEPTEMBER 11 2026.....SUNRISE 6:49 AM MDT SUNSET 7:31 PM MDT
SEPTEMBER 12 2026.....SUNRISE 6:50 AM MDT SUNSET 7:29 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$