August weather forecastRiner, WY
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Riner, Wyoming, with an average temperature fluctuating between 79°F (26.1°C) and 56.8°F (13.8°C).Temperature
Riner transitions into August recording an average high-temperature of a still moderately hot 79°F (26.1°C), closely aligning with the preceding month's temperature. Riner, amidst the high August temperatures, experiences a substantial shift to an average nighttime low of 56.8°F (13.8°C).Humidity
July and August, with an average relative humidity of 35%, are the least humid months in Riner.Rainfall
The month with the least rainfall is August, when the rain falls for 6.6 days and typically collects 0.35" (9mm) of precipitation.Snowfall
In Riner, snow does not fall in June through September.Daylight
In August, the average length of the day in Riner, Wyoming, is 13h and 48min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:27 pm. On the last day of August, sunrise is at 6:35 am and sunset at 7:44 pm MDT.
Sunshine
In Riner, the average sunshine in August is 11.9h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during August leads to these advisories:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Riner, WY
- Average high temperature in August: 79°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in August
Riner, WY
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Riner, WY
- Average wind speed in August: 9.5mph
The windiest month (with the highest average wind speed) is November (13.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.5mph).
Average humidity in August
Riner, WY
- Average humidity in August: 35%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (35%).
Average rainfall in August
Riner, WY
- Average rainfall in August: 0.35"
The wettest month (with the highest rainfall) is April (1.42").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in August
Riner, WY
- Average rainfall days in August: 6.6 days
The month with the highest number of rainy days is May (11.7 days).
The month with the least rainy days is November (3.2 days).
Average snowfall in August
Riner, WY
- Average snowfall in August: 0"
The month with the highest snowfall is April (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Riner, WY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (14.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Riner, WY
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 11h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in August
Riner, WY
- Average sunshine days in August: 20.9 days
The month with the most sunshine days is June (21.1 days).
The month with the least sunshine days is February (11.2 days).
Average UV index in August
Riner, WY
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in August
Riner, WY
- Average cloud cover in August: 13
The month with the most cloud cover is February (Cloud cover 45).
The months with the least cloud cover are August and September (Cloud cover 13).
Average visibility in August
Riner, WY
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).





