252
CDUS45 KRIW 220045
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT THU MAY 21 2026
...............................
..THE LANDER WY CLIMATE SUMMARY FOR MAY 21 2026
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1891 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 54 9:31 AM 85 1948 68 -14 65
1964
2006
MINIMUM 33 12:31 PM 27 1908 41 -8 35
2001
AVERAGE 44 55 -11 50
PRECIPITATION (IN)
TODAY 0.42 1.78 1904 0.09 0.33 0.00
MONTH TO DATE 1.83 1.88 -0.05 1.79
SINCE MAR 1 4.22 5.24 -1.02 7.39
SINCE JAN 1 4.63 6.45 -1.82 8.47
SNOWFALL (IN)
TODAY MM 0.1 MM 0.0
MONTH TO DATE 12.5 4.0 8.5 3.4
SINCE MAR 1 29.9 34.8 -4.9 48.7
SINCE JUL 1 38.1 87.0 -48.9 79.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 21 10 11 15
MONTH TO DATE 269 297 -28 262
SINCE MAR 1 1391 1848 -457 1721
SINCE JUL 1 5474 7499 -2025 6750
COOLING
TODAY 0 0 0 0
MONTH TO DATE 2 0 2 4
SINCE MAR 1 3 0 3 4
SINCE JAN 1 3 0 3 4
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 8.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96
LOWEST 44
AVERAGE 70
......................................................
THE LANDER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 83 1967
2006
MINIMUM TEMPERATURE (F) 42 29 2022
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 5:46 AM MDT SUNSET 8:37 PM MDT
MAY 22 2026...........SUNRISE 5:46 AM MDT SUNSET 8:38 PM MDT
- 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