291
CDUS45 KRIW 200045
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST FRI DEC 19 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 19 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1891 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 52 3:57 AM 62 1917 32 20 49
MINIMUM 25 12:08 AM -40 1924 9 16 25
AVERAGE 39 20 19 37
PRECIPITATION (IN)
TODAY 0.00 0.34 1892 0.02 -0.02 0.00
MONTH TO DATE 0.21 0.40 -0.19 0.00
SINCE DEC 1 0.21 0.40 -0.19 0.00
SINCE JAN 1 13.34 13.00 0.34 9.19
SNOWFALL (IN)
TODAY MM 0.3 MM 0.0
MONTH TO DATE 2.6 5.9 -3.3 0.0
SINCE DEC 1 2.6 5.9 -3.3 0.0
SINCE JUL 1 3.7 28.5 -24.8 10.3
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 26 44 -18 28
MONTH TO DATE 538 809 -271 610
SINCE DEC 1 538 809 -271 610
SINCE JUL 1 1908 2637 -729 2039
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 569 485 84 644
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 49 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 79 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 18.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 51
LOWEST 28
AVERAGE 40
......................................................
THE LANDER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 32 56 2024
MINIMUM TEMPERATURE (F) 9 -37 1924
SUNRISE AND SUNSET
DECEMBER 19 2025......SUNRISE 7:41 AM MST SUNSET 4:43 PM MST
DECEMBER 20 2025......SUNRISE 7:42 AM MST SUNSET 4:44 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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