561
CDUS45 KRIW 210727
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST SUN DEC 21 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 20 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 43 3:29 PM 56 2024 32 11 56
MINIMUM 19 7:57 AM -37 1924 9 10 21
AVERAGE 31 20 11
PRECIPITATION (IN)
YESTERDAY 0.00 0.35 1920 0.02 -0.02 0.00
MONTH TO DATE 0.21 0.42 -0.21 0.00
SINCE DEC 1 0.21 0.42 -0.21 0.00
SINCE JAN 1 13.34 13.02 0.32 9.19
SNOWFALL (IN)
YESTERDAY 0.0 4.3 1968 0.2 -0.2 0.0
MONTH TO DATE 2.6 6.1 -3.5 0.0
SINCE DEC 1 2.6 6.1 -3.5 0.0
SINCE JUL 1 3.7 28.7 -25.0 10.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 34 45 -11 26
MONTH TO DATE 572 854 -282 636
SINCE DEC 1 572 854 -282 636
SINCE JUL 1 1942 2682 -740 2065
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
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WIND (MPH)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 6.7
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 92 8:00 AM
LOWEST 19 6:00 PM
AVERAGE 56
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THE LANDER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 32 61 1969
MINIMUM TEMPERATURE (F) 9 -35 1990
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:42 AM MST SUNSET 4:44 PM MST
DECEMBER 22 2025......SUNRISE 7:43 AM MST SUNSET 4:45 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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