Riverton
Wyoming, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Riverton, WY

August, the last month of the summer, in Riverton, is also a moderately hot month, with average temperature fluctuating between 84.9°F (29.4°C) and 60.3°F (15.7°C).

Temperature

In August, the average high-temperature is almost the same as in July - a warm 84.9°F (29.4°C). The average low-temperature, in August, is 60.3°F (15.7°C).

Humidity

Months with the lowest humidity in Riverton are July and August, with an average relative humidity of 31%.

Rainfall

In Riverton, in August, during 6.3 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 67.3 rainfall days, and 6.93" (176mm) of precipitation is accumulated.

Snowfall

June through August are months without snowfall.

Daylight

The average length of the day in Riverton is 13.9h.

Sunshine

The average sunshine in Riverton is 11.9h.

UV index

In August, the average daily maximum UV index in Riverton, Wyoming, is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Riverton?

In Riverton, Wyoming, in August, the average high-temperature is 84.9°F (29.4°C), and the average low-temperature is 60.3°F (15.7°C).

What is the least humid month in Riverton?

July and August, with an average relative humidity of 31%, are the least humid months.

What is the average humidity in August in Riverton?

The average relative humidity in August in Riverton, Wyoming, is 31%.

How many days does it rain in August in Riverton?

In Riverton, in August, it is raining for 6.3 days, with typically 0.31" (8mm) of accumulated precipitation.

Does it snow in Riverton in August?

In Riverton, in August, it doesn't snow. In September, it regularly snows.

When it does not snow in Riverton?

June through August are months without snowfall in Riverton.

What is the average length of the day in August in Riverton?

The average length of the day in August in Riverton is 13.9h.

How long on average sun shines in August in Riverton?

The average sunshine in August is 11.9h.

What is the UV index intensity in August in Riverton?

In August, the average daily maximum UV index in Riverton is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Riverton, WY
  • Average high temperature in August: 84.9°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (30.9°F).

  • Average low temperature in August: 60.3°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

Average humidity in August - Riverton, WY
  • Average humidity in August: 31%

The month with the highest relative humidity is January (77%).
Months with the lowest relative humidity are July and August (31%).

Average rainfall in August - Riverton, WY
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is January (0.24").

Average rainfall days in August - Riverton, WY
  • Average rainfall days in August: 6.3 days

The month with the highest number of rainy days is May (9.9 days).
The month with the least rainy days is January (2.5 days).

Average snowfall in August - Riverton, WY
  • Average snowfall in August: 0"

The month with the highest snowfall is April (5.39").
Months with the least snowfall are June, July and August (0").

Average snowfall days in August - Riverton, WY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (7.8 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in August / Average sunshine in August - Riverton, WY
  • Average daylight in August: 13.9h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in August: 11.9h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 6.6h).

Average UV index in August - Riverton, WY
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).