915
CDUS45 KRIW 120731
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1231 AM MST FRI DEC 12 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR DECEMBER 11 2025
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)
YESTERDAY
MAXIMUM 59R 3:33 PM 59 2004 31 28 38
MINIMUM 36 5:51 AM -9 2000 9 27 17
AVERAGE 48 20 28 28
PRECIPITATION (IN)
YESTERDAY 0.00 0.08 0.01 -0.01 0.00
MONTH TO DATE 0.14 0.10 0.04 T
SINCE DEC 1 0.14 0.10 0.04 T
SINCE JAN 1 9.10 8.40 0.70 6.22
SNOWFALL (IN)
YESTERDAY 0.0 1.2 2020 0.0
MONTH TO DATE 1.5 T
SINCE DEC 1 1.5 T
SINCE JUL 1 3.5 3.8
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 17 45 -28 37
MONTH TO DATE 356 478 -122 391
SINCE DEC 1 356 478 -122 391
SINCE JUL 1 1799 2375 -576 1908
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 611 499 112 610
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 39 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 55 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 19.1
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 67 2:00 AM
LOWEST 22 12:00 PM
AVERAGE 45
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 31 53 1995
MINIMUM TEMPERATURE (F) 9 -10 2007
SUNRISE AND SUNSET
DECEMBER 12 2025......SUNRISE 7:36 AM MST SUNSET 4:39 PM MST
DECEMBER 13 2025......SUNRISE 7:37 AM MST SUNSET 4:39 PM MST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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