Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 270728
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SUN SEP 27 2026
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 26 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 81 3:03 PM 89 2015 69 12 78
MINIMUM 50 6:19 AM 24 1996 40 10 48
AVERAGE 66 54 12 63
PRECIPITATION (IN)
YESTERDAY 0.00 1.25 0.04 -0.04 T
MONTH TO DATE 1.53 0.64 0.89 0.99
SINCE SEP 1 1.53 0.64 0.89 0.99
SINCE JAN 1 4.50 7.00 -2.50 7.24
SNOWFALL (IN)
YESTERDAY 0.0 5.0 2013 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 11 -11 2
MONTH TO DATE 62 157 -95 87
SINCE SEP 1 62 157 -95 87
SINCE JUL 1 64 193 -129 90
COOLING
YESTERDAY 1 0 1 0
MONTH TO DATE 44 28 16 37
SINCE SEP 1 44 28 16 37
SINCE JAN 1 757 496 261 611
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 7.8
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 54 5:00 AM
LOWEST 16 3:00 PM
AVERAGE 35
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 86 2001
MINIMUM TEMPERATURE (F) 40 21 1996
SUNRISE AND SUNSET
SEPTEMBER 27 2026.....SUNRISE 7:07 AM MDT SUNSET 7:02 PM MDT
SEPTEMBER 28 2026.....SUNRISE 7:08 AM MDT SUNSET 7:00 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$