049
CDUS45 KRIW 090727
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST TUE DEC 09 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 8 2025
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)
YESTERDAY
MAXIMUM 48 1:47 PM 58 1939 34 14 49
MINIMUM 21 2:25 AM -27 1919 11 10 22
AVERAGE 35 23 12
PRECIPITATION (IN)
YESTERDAY 0.00 0.86 1985 0.02 -0.02 0.00
MONTH TO DATE 0.18 0.18 0.00 0.00
SINCE DEC 1 0.18 0.18 0.00 0.00
SINCE JAN 1 13.31 12.78 0.53 9.19
SNOWFALL (IN)
YESTERDAY 0.0 14.1 1985 0.3 -0.3 0.0
MONTH TO DATE 2.6 2.6 0.0 0.0
SINCE DEC 1 2.6 2.6 0.0 0.0
SINCE JUL 1 3.7 25.2 -21.5 10.3
SNOW DEPTH T
DEGREE DAYS
HEATING
YESTERDAY 30 42 -12 29
MONTH TO DATE 280 329 -49 227
SINCE DEC 1 280 329 -49 227
SINCE JUL 1 1650 2157 -507 1656
COOLING
YESTERDAY 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 13 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 3.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 4:00 AM
LOWEST 33 3:00 PM
AVERAGE 50
......................................................
THE LANDER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 64 1939
1975
MINIMUM TEMPERATURE (F) 11 -36 1919
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 7:34 AM MST SUNSET 4:41 PM MST
DECEMBER 10 2025......SUNRISE 7:35 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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