831
CDUS45 KRIW 170727
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST WED DEC 17 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 16 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 62R 1:58 PM 60 1939 32 30 40
1980
MINIMUM 32 7:14 AM -21 1897 10 22 12
AVERAGE 47 21 26
PRECIPITATION (IN)
YESTERDAY 0.00 0.90 1908 0.01 -0.01 0.00
MONTH TO DATE 0.18 0.34 -0.16 0.00
SINCE DEC 1 0.18 0.34 -0.16 0.00
SINCE JAN 1 13.31 12.94 0.37 9.19
SNOWFALL (IN)
YESTERDAY 0.0 5.9 1967 0.3 -0.3 0.0
MONTH TO DATE 2.6 5.0 -2.4 0.0
SINCE DEC 1 2.6 5.0 -2.4 0.0
SINCE JUL 1 3.7 27.6 -23.9 10.3
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 18 44 -26 39
MONTH TO DATE 453 677 -224 516
SINCE DEC 1 453 677 -224 516
SINCE JUL 1 1823 2505 -682 1945
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 41 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 63 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 10.7
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 53 6:00 AM
LOWEST 14 11:00 AM
AVERAGE 34
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THE LANDER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 32 62 1980
MINIMUM TEMPERATURE (F) 9 -29 1924
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 7:40 AM MST SUNSET 4:42 PM MST
DECEMBER 18 2025......SUNRISE 7:41 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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