560
CDUS45 KRIW 180733
CLILND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT MON MAY 18 2026
...............................
..THE LANDER WY CLIMATE SUMMARY FOR MAY 17 2026
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)
YESTERDAY
MAXIMUM 54 MM 86 1948 67 -13 68
MINIMUM 32 MM 23 1910 40 -8 36
AVERAGE 43 53 -10
PRECIPITATION (IN)
YESTERDAY 0.48 1.18 2000 0.09 0.39 0.00
MONTH TO DATE 0.83 1.52 -0.69 1.34
SINCE MAR 1 3.22 4.88 -1.66 6.94
SINCE JAN 1 3.63 6.09 -2.46 8.02
SNOWFALL (IN)
YESTERDAY 0.9 R T 1978 0.0 0.9 0.0
MONTH TO DATE 4.6 3.6 1.0 3.4
SINCE MAR 1 22.0 34.4 -12.4 48.7
SINCE JUL 1 30.2 86.6 -56.4 79.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 22 12 10 13
MONTH TO DATE 175 253 -78 202
SINCE MAR 1 1297 1804 -507 1661
SINCE JUL 1 5380 7455 -2075 6690
COOLING
YESTERDAY 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 12 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 4.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 9:00 PM
LOWEST 21 1:00 AM
AVERAGE 61
......................................................
THE LANDER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 86 1901
2006
2020
MINIMUM TEMPERATURE (F) 40 22 1896
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:49 AM MDT SUNSET 8:34 PM MDT
MAY 19 2026...........SUNRISE 5:48 AM MDT SUNSET 8:35 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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