672
CDUS45 KRIW 220045
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST SUN DEC 21 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 21 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 4:56 PM 61 1969 32 20 48
MINIMUM 24 8:21 AM -35 1990 9 15 27
AVERAGE 38 20 18 38
PRECIPITATION (IN)
TODAY 0.00 0.68 2011 0.02 -0.02 0.00
MONTH TO DATE 0.21 0.44 -0.23 0.00
SINCE DEC 1 0.21 0.44 -0.23 0.00
SINCE JAN 1 13.34 13.04 0.30 9.19
SNOWFALL (IN)
TODAY MM 0.3 MM 0.0
MONTH TO DATE 2.6 6.4 -3.8 0.0
SINCE DEC 1 2.6 6.4 -3.8 0.0
SINCE JUL 1 3.7 29.0 -25.3 10.3
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 27 45 -18 27
MONTH TO DATE 599 899 -300 663
SINCE DEC 1 599 899 -300 663
SINCE JUL 1 1969 2727 -758 2092
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 23 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 5.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 60
LOWEST 34
AVERAGE 47
......................................................
THE LANDER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 32 58 1917
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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page