Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 220045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT THU AUG 21 2025
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 21 2025...
VALID TODAY AS OF 0600 PM LOCAL TIME.
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)
TODAY
MAXIMUM 88 4:41 PM 94 2010 84 4 94
2023
2024
MINIMUM 67 5:40 AM 44 2021 53 14 60
AVERAGE 78 68 10 77
PRECIPITATION (IN)
TODAY T 0.17 2021 0.02 -0.02 T
MONTH TO DATE 0.01 0.29 -0.28 0.22
SINCE JUN 1 1.22 1.77 -0.55 0.69
SINCE JAN 1 5.74 6.23 -0.49 5.33
SNOWFALL (IN)
TODAY MM 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 MM
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 2 8 -6 1
SINCE JUN 1 80 133 -53 41
SINCE JUL 1 2 18 -16 8
COOLING
TODAY 13 4 9 12
MONTH TO DATE 172 135 37 157
SINCE JUN 1 557 426 131 512
SINCE JAN 1 563 434 129 512
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 8.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 37
LOWEST 20
AVERAGE 29
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 96 2009
MINIMUM TEMPERATURE (F) 52 47 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.
$$