Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
At the onset of August, Big Sky records an average high-temperature of a pleasant 72.7°F (22.6°C), showing little deviation from the preceding month. August nights report a substantial dip from daytime highs to an average of 45.1°F (7.3°C).Humidity
With an average relative humidity of 51%, August is the least humid month in Big Sky.Rainfall
In Big Sky, in August, during 13.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Big Sky, during the entire year, the rain falls for 116.1 days and collects up to 23.5" (597mm) of precipitation.Snowfall
January through December are months with snowfall. August is the month with the least snowfall. Snow falls for 0.3 days and accumulates 0.08" (2mm) of snow.Daylight
In August, the average length of the day is 14h and 2min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:52 pm. On the last day of August, sunrise is at 6:46 am and sunset at 8:03 pm MDT.
Sunshine
The average sunshine in August is 11.5h.UV index
In August, the average daily maximum UV index in Big Sky is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 in August translates into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many days does it snow in August?
How many hours of daylight does Big Sky have in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
How high is the UV index in August?
Average temperature in August
Big Sky, MT
- Average high temperature in August: 72.7°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is December (22.5°F).
- Average low temperature in August: 45.1°F
The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (7.9°F).
Average pressure in August
Big Sky, MT
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Big Sky, MT
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in August
Big Sky, MT
- Average humidity in August: 51%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is August (51%).
Average rainfall in August
Big Sky, MT
- Average rainfall in August: 1.42"
The wettest months (with the highest rainfall) are April and May (2.91").
The driest month (with the least rainfall) is July (1.18").
Average rainfall days in August
Big Sky, MT
- Average rainfall days in August: 13.3 days
The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Big Sky, MT
- Average snowfall in August: 0.08"
The month with the highest snowfall is April (19.88").
The month with the least snowfall is August (0.08").
Average snowfall days in August
Big Sky, MT
- Average snowfall days in August: 0.3 days
The month with the highest number of snowfall days is March (21 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in August /
Average sunshine in August
Big Sky, MT
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 11h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in August
Big Sky, MT
- Average sunshine days in August: 12.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is May (5.7 days).
Average UV index in August
Big Sky, MT
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in August
Big Sky, MT
- Average cloud cover in August: 18
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 17).
Average visibility in August
Big Sky, MT
- Average visibility in August: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Big Sky, Montana, USA
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