073
CDUS45 KRIW 200729
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT SAT SEP 20 2025
...............................
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 19 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 77 3:42 PM 90 2010 73 4 74
MINIMUM 45 5:49 AM 24 1965 44 1 40
AVERAGE 61 58 3
PRECIPITATION (IN)
YESTERDAY 0.00 0.72 1999 0.04 -0.04 0.00
MONTH TO DATE 0.36 0.49 -0.13 0.40
SINCE SEP 1 0.36 0.49 -0.13 0.40
SINCE JAN 1 10.37 9.93 0.44 7.42
SNOWFALL (IN)
YESTERDAY 0.0 3.6 1957 0.0 0.0 0.0
MONTH TO DATE 0.0 0.4 -0.4 0.0
SINCE SEP 1 0.0 0.4 -0.4 0.0
SINCE JUL 1 0.0 0.4 -0.4 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 4 7 -3 8
MONTH TO DATE 63 85 -22 46
SINCE SEP 1 63 85 -22 46
SINCE JUL 1 68 124 -56 64
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 40 31 9 60
SINCE SEP 1 40 31 9 60
SINCE JAN 1 567 483 84 621
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 4.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 60 4:00 AM
LOWEST 22 3:00 PM
AVERAGE 41
......................................................
THE LANDER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 88 1956
2016
MINIMUM TEMPERATURE (F) 43 23 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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