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CDUS45 KRIW 180733
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT MON MAY 18 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR MAY 17 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 52 2:09 PM 83 2006 67 -15 69
MINIMUM 34 11:49 PM 30 1999 40 -6 40
AVERAGE 43 54 -11 55
PRECIPITATION (IN)
YESTERDAY 0.15 1.12 0.06 0.09 0.00
MONTH TO DATE 0.24 1.08 -0.84 0.87
SINCE MAR 1 0.81 2.93 -2.12 3.75
SINCE JAN 1 1.08 3.62 -2.54 4.25
SNOWFALL (IN)
YESTERDAY T R 0.0 2021 0.0
MONTH TO DATE 0.5 0.9
SINCE MAR 1 8.1 18.2
SINCE JUL 1 16.1 30.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 22 12 10 10
MONTH TO DATE 178 247 -69 202
SINCE MAR 1 1303 1806 -503 1692
SINCE JUL 1 5596 7684 -2088 7039
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 8 0 8 3
SINCE MAR 1 8 0 8 3
SINCE JAN 1 8 0 8 3
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 10.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 7:00 PM
LOWEST 32 12:00 AM
AVERAGE 63
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THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 87 2009
MINIMUM TEMPERATURE (F) 40 32 2017
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:47 AM MDT SUNSET 8:34 PM MDT
MAY 19 2026...........SUNRISE 5:46 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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