367
CDUS45 KRIW 210045
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT SEP 20 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 20 2025
VALID TODAY AS OF 0600 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 80 3:21 PM 88 1956 73 7 79
2016
MINIMUM 53 5:55 AM 23 1983 43 10 44
AVERAGE 67 58 9 62
PRECIPITATION (IN)
TODAY 0.00 1.42 1989 0.04 -0.04 0.00
MONTH TO DATE 0.36 0.53 -0.17 0.40
SINCE SEP 1 0.36 0.53 -0.17 0.40
SINCE JAN 1 10.37 9.97 0.40 7.42
SNOWFALL (IN)
TODAY MM 0.1 MM 0.0
MONTH TO DATE 0.0 0.5 -0.5 0.0
SINCE SEP 1 0.0 0.5 -0.5 0.0
SINCE JUL 1 0.0 0.5 -0.5 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 8 -8 3
MONTH TO DATE 63 93 -30 49
SINCE SEP 1 63 93 -30 49
SINCE JUL 1 68 132 -64 67
COOLING
TODAY 2 0 2 0
MONTH TO DATE 42 31 11 60
SINCE SEP 1 42 31 11 60
SINCE JAN 1 569 483 86 621
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62
LOWEST 19
AVERAGE 41
......................................................
THE LANDER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 87 1905
MINIMUM TEMPERATURE (F) 43 25 1983
SUNRISE AND SUNSET
SEPTEMBER 20 2025.....SUNRISE 7:00 AM MDT SUNSET 7:15 PM MDT
SEPTEMBER 21 2025.....SUNRISE 7:02 AM MDT SUNSET 7:13 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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