498
CDUS45 KRIW 190732
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT TUE MAY 19 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR MAY 18 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 42 5:17 PM 87 2009 68 -26 63
MINIMUM 30R 6:10 AM 32 2017 40 -10 43
AVERAGE 36 54 -18 53
PRECIPITATION (IN)
YESTERDAY 0.04 0.74 0.07 -0.03 0.10
MONTH TO DATE 0.28 1.15 -0.87 0.97
SINCE MAR 1 0.85 3.00 -2.15 3.85
SINCE JAN 1 1.12 3.69 -2.57 4.35
SNOWFALL (IN)
YESTERDAY 0.3 4.2 2017 0.0
MONTH TO DATE 0.8 0.9
SINCE MAR 1 8.4 18.2
SINCE JUL 1 16.4 30.7
SNOW DEPTH T
DEGREE DAYS
HEATING
YESTERDAY 29 11 18 12
MONTH TO DATE 207 258 -51 214
SINCE MAR 1 1332 1817 -485 1704
SINCE JUL 1 5625 7695 -2070 7051
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 30 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 15.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 10:00 AM
LOWEST 50 2:00 PM
AVERAGE 71
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 89 2009
MINIMUM TEMPERATURE (F) 41 31 2003
2019
SUNRISE AND SUNSET
MAY 19 2026...........SUNRISE 5:46 AM MDT SUNSET 8:35 PM MDT
MAY 20 2026...........SUNRISE 5:46 AM MDT SUNSET 8:36 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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