840
CDUS45 KRIW 180045
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT WED SEP 17 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 17 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 68 3:47 PM 87 1937 74 -6 68
2014
MINIMUM 45 3:21 AM 15 1965 44 1 50
AVERAGE 57 59 -2 59
PRECIPITATION (IN)
TODAY T 0.81 1978 0.03 -0.03 0.04
MONTH TO DATE 0.36 0.42 -0.06 0.40
SINCE SEP 1 0.36 0.42 -0.06 0.40
SINCE JAN 1 10.37 9.86 0.51 7.42
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 0.0 0.3 -0.3 0.0
SINCE SEP 1 0.0 0.3 -0.3 0.0
SINCE JUL 1 0.0 0.3 -0.3 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 8 6 2 6
MONTH TO DATE 53 71 -18 30
SINCE SEP 1 53 71 -18 30
SINCE JUL 1 58 110 -52 48
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 40 29 11 60
SINCE SEP 1 40 29 11 60
SINCE JAN 1 567 481 86 621
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 4.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90
LOWEST 32
AVERAGE 61
......................................................
THE LANDER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 89 2014
MINIMUM TEMPERATURE (F) 44 10 1965
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 6:57 AM MDT SUNSET 7:20 PM MDT
SEPTEMBER 18 2025.....SUNRISE 6:58 AM MDT SUNSET 7:19 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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