August weather forecastSundance, WY
August
Weather in August
August continues the trend set by July, the warm weather prevailing in Sundance. With little variation from the previous month, the weather remains conducive for outdoor experiences. As September approaches, subtle changes begin creeping into the weather patterns, notably the gradual shortening of days. Yet, the dominance of the summer weather remains unchallenged, August holding onto the warmth as long as it can. The advent of September promises a slight dip in temperatures, a gentle nudge towards fall.Temperature
The advent of August signifies a minor shift to an average high-temperature of a still moderately hot 77.2°F (25.1°C), aligning closely with July. Sundance records an average low of 55.8°F (13.2°C) throughout the nights in August.Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 53%.Rainfall
In August, the rain falls for 16.5 days. Throughout August, 2.6" (66mm) of precipitation is accumulated. In Sundance, during the entire year, the rain falls for 123.2 days and collects up to 19.37" (492mm) of precipitation.Snowfall
July and August are months without snowfall in Sundance, Wyoming.Daylight
The average length of the day in August is 13h and 59min.On the first day of August in Sundance, sunrise is at 5:45 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:35 pm MDT.
Sunshine
August has the most sunshine of the year in Sundance, Wyoming, with an average of 11.8h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 during August translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sundance, WY
- Average high temperature in August: 77.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in August: 55.8°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).
Average pressure in August
Sundance, WY
- Average pressure in August: 29.89"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in August
Sundance, WY
- Average wind speed in August: 7.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in August
Sundance, WY
- Average humidity in August: 53%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (53%).
Average rainfall in August
Sundance, WY
- Average rainfall in August: 2.6"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in August
Sundance, WY
- Average rainfall days in August: 16.5 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in August
Sundance, WY
- Average snowfall in August: 0"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Sundance, WY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Sundance, WY
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 11h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in August
Sundance, WY
- Average sunshine days in August: 10 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in August
Sundance, WY
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in August
Sundance, WY
- Average cloud cover in August: 17
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in August
Sundance, 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).





