August weather forecastButte, MT
August
Weather in August
As the peak of summer passes in Butte, Montana, August provides a gentle reminder of the approaching autumn. Almost identical to July, the city experiences warm, sunny weather, but with a slight dip in the average temperature. The decrease in rainfall is marginal, from 0.79" (20mm) in July to 0.71" (18mm) in August, enforcing the summer dry spell. While daylight gradually reduces, it is still ample for all kinds of outdoor ventures. August marks the end of summer vacation and transitions smoothly into the autumn season.Temperature
Butte marks the onset of August with an average high-temperature of a still warm 74.8°F (23.8°C), subtly divergent from July's 76.5°F (24.7°C). A marked drop from daytime peak temperatures to an average low-temperature of 46.2°F (7.9°C) is observed during the nights in August.Humidity
The average relative humidity in August is 49%.Rainfall
In Butte, in August, during 7.8 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Butte, during the entire year, the rain falls for 102.5 days and collects up to 13.74" (349mm) of precipitation.Snowfall
In Butte, Montana, snow does not fall in July and August.Daylight
In Butte, the average length of the day in August is 14h and 5min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:59 pm. On the last day of August, sunrise is at 6:50 am and sunset at 8:09 pm MDT.
Sunshine
In August, the average sunshine is 11.3h.UV index
In Butte, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in August converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Butte, MT
- Average high temperature in August: 74.8°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in August: 46.2°F
The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is December (9°F).
Average pressure in August
Butte, MT
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Butte, MT
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in August
Butte, MT
- Average humidity in August: 49%
The months with the highest relative humidity are January, February and December (87%).
The month with the lowest relative humidity is July (48%).
Average rainfall in August
Butte, MT
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is May (2.24").
The driest months (with the least rainfall) are January, November and December (0.67").
Average rainfall days in August
Butte, MT
- Average rainfall days in August: 7.8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is November (4.1 days).
Average snowfall in August
Butte, MT
- Average snowfall in August: 0"
The month with the highest snowfall is March (8.74").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Butte, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (17.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Butte, MT
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 11h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in August
Butte, MT
- Average sunshine days in August: 19.1 days
The month with the most sunshine days is August (19.1 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in August
Butte, MT
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in August
Butte, MT
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in August
Butte, MT
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
