054
CDUS45 KRIW 220728
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST MON DEC 22 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR DECEMBER 21 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 10:56 PM 51 2021 30 25 43
MINIMUM 20 3:51 AM -29 1998 7 13 22
AVERAGE 38 18 20 33
PRECIPITATION (IN)
YESTERDAY 0.00 0.29 0.01 -0.01 0.00
MONTH TO DATE 0.14 0.18 -0.04 T
SINCE DEC 1 0.14 0.18 -0.04 T
SINCE JAN 1 9.10 8.48 0.62 6.22
SNOWFALL (IN)
YESTERDAY 0.0 5.5 2022 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 27 47 -20 32
MONTH TO DATE 604 939 -335 742
SINCE DEC 1 604 939 -335 742
SINCE JUL 1 2047 2836 -789 2259
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 23 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 5.9
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 77 6:00 AM
LOWEST 37 2:00 PM
AVERAGE 57
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 30 53 2024
MINIMUM TEMPERATURE (F) 7 -31 2022
SUNRISE AND SUNSET
DECEMBER 22 2025......SUNRISE 7:43 AM MST SUNSET 4:43 PM MST
DECEMBER 23 2025......SUNRISE 7:43 AM MST SUNSET 4:43 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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