289
CDUS45 KRIW 220045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SUN SEP 21 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 21 2025
VALID TODAY AS OF 0600 PM LOCAL TIME.
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)
TODAY
MAXIMUM 80 2:46 PM 84 2001 71 9 64
MINIMUM 51 5:57 AM 30 2000 43 8 41
AVERAGE 66 57 9 53
PRECIPITATION (IN)
TODAY T 0.37 1997 0.03 -0.03 0.00
MONTH TO DATE 0.08 0.46 -0.38 0.07
SINCE SEP 1 0.08 0.46 -0.38 0.07
SINCE JAN 1 6.33 6.82 -0.49 5.50
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 0 8 -8 12
MONTH TO DATE 55 108 -53 59
SINCE SEP 1 55 108 -53 59
SINCE JUL 1 58 144 -86 77
COOLING
TODAY 1 0 1 0
MONTH TO DATE 37 28 9 47
SINCE SEP 1 37 28 9 47
SINCE JAN 1 611 496 115 589
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 38 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 10.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 52
LOWEST 20
AVERAGE 36
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 86 2007
MINIMUM TEMPERATURE (F) 42 25 2000
SUNRISE AND SUNSET
SEPTEMBER 21 2025.....SUNRISE 7:00 AM MDT SUNSET 7:12 PM MDT
SEPTEMBER 22 2025.....SUNRISE 7:01 AM MDT SUNSET 7:10 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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