644
CDUS45 KRIW 190045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST THU DEC 18 2025
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR DECEMBER 18 2025
VALID TODAY AS OF 0500 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 38 12:04 PM 59 2013 30 8 49
MINIMUM 27 8:27 AM -18 2016 7 20 19
AVERAGE 33 19 14 34
PRECIPITATION (IN)
TODAY 0.00 0.05 1997 0.00 0.00 0.00
MONTH TO DATE 0.14 0.15 -0.01 T
SINCE DEC 1 0.14 0.15 -0.01 T
SINCE JAN 1 9.10 8.45 0.65 6.22
SNOWFALL (IN)
TODAY MM 0.0
MONTH TO DATE 1.5 T
SINCE DEC 1 1.5 T
SINCE JUL 1 3.5 3.8
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 32 46 -14 31
MONTH TO DATE 519 799 -280 645
SINCE DEC 1 519 799 -280 645
SINCE JUL 1 1962 2696 -734 2162
COOLING
TODAY 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 45 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 60 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 20.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 37
LOWEST 20
AVERAGE 29
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 30 46 2024
MINIMUM TEMPERATURE (F) 7 -13 1998
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 7:40 AM MST SUNSET 4:41 PM MST
DECEMBER 19 2025......SUNRISE 7:41 AM MST SUNSET 4:41 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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