754
CDUS45 KRIW 200728
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST SAT DEC 20 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR DECEMBER 19 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 55R 12:22 PM 46 2024 30 25 46
MINIMUM 27 1:23 AM -13 1998 7 20 21
AVERAGE 41 18 23 34
PRECIPITATION (IN)
YESTERDAY 0.00 0.11 0.01 -0.01 0.00
MONTH TO DATE 0.14 0.16 -0.02 T
SINCE DEC 1 0.14 0.16 -0.02 T
SINCE JAN 1 9.10 8.46 0.64 6.22
SNOWFALL (IN)
YESTERDAY 0.0 2.8 2013 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 24 46 -22 31
MONTH TO DATE 543 845 -302 676
SINCE DEC 1 543 845 -302 676
SINCE JUL 1 1986 2742 -756 2193
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
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WIND (MPH)
HIGHEST WIND SPEED 40 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 51 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 19.2
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 75 11:00 PM
LOWEST 30 7:00 AM
AVERAGE 53
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THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 30 49 2020
MINIMUM TEMPERATURE (F) 7 -21 1998
SUNRISE AND SUNSET
DECEMBER 20 2025......SUNRISE 7:42 AM MST SUNSET 4:42 PM MST
DECEMBER 21 2025......SUNRISE 7:42 AM MST SUNSET 4:42 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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