372
CDUS45 KRIW 150735
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
135 AM MDT TUE SEP 15 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 14 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 74 3:01 PM 85 2018 75 -1 77
MINIMUM 50 11:59 PM 33 2003 45 5 45
AVERAGE 62 60 2 61
PRECIPITATION (IN)
YESTERDAY 0.00 0.39 0.02 -0.02 0.00
MONTH TO DATE T 0.27 -0.27 T
SINCE SEP 1 T 0.27 -0.27 T
SINCE JAN 1 2.97 6.63 -3.66 6.25
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0
MONTH TO DATE 0.0 0.0
SINCE SEP 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 6 -3 4
MONTH TO DATE 11 58 -47 21
SINCE SEP 1 11 58 -47 21
SINCE JUL 1 13 94 -81 24
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 43 24 19 36
SINCE SEP 1 43 24 19 36
SINCE JAN 1 756 492 264 610
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 38 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 55 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 14.8
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 48 1:00 AM
LOWEST 15 4:00 PM
AVERAGE 32
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 90 2000
2018
MINIMUM TEMPERATURE (F) 45 37 2004
2014
SUNRISE AND SUNSET
SEPTEMBER 15 2026.....SUNRISE 6:54 AM MDT SUNSET 7:23 PM MDT
SEPTEMBER 16 2026.....SUNRISE 6:55 AM MDT SUNSET 7:22 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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