Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 210729
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT THU AUG 21 2025
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 20 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 99R 3:47 PM 94 2019 85 14 93
MINIMUM 55 5:21 AM 39 2016 53 2 59
AVERAGE 77 69 8 76
PRECIPITATION (IN)
YESTERDAY 0.00 0.15 0.01 -0.01 0.00
MONTH TO DATE 0.01 0.27 -0.26 0.22
SINCE JUN 1 1.22 1.75 -0.53 0.69
SINCE JAN 1 5.74 6.21 -0.47 5.33
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0
MONTH TO DATE 0.0 0.0
SINCE JUN 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 2 7 -5 1
SINCE JUN 1 80 132 -52 41
SINCE JUL 1 2 17 -15 8
COOLING
YESTERDAY 12 5 7 11
MONTH TO DATE 159 131 28 145
SINCE JUN 1 544 422 122 500
SINCE JAN 1 550 430 120 500
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 8.8
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 44 5:00 AM
LOWEST 7 3:00 PM
AVERAGE 26
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 94 2010
2023
2024
MINIMUM TEMPERATURE (F) 53 44 2021
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:27 AM MDT SUNSET 8:06 PM MDT
AUGUST 22 2025........SUNRISE 6:28 AM MDT SUNSET 8:05 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$