Montana Weather in August

During August, Montana experiences pleasant daytime temperatures of 19°C (66°F) and cooler nights around 7°C (45°F). As part of the summer season, expect quite a bit of rainfall. Around 141 mm (5.6 in) is typical.

Rainfall in Montana in August

On average, there are about 17 days with rain during this month, averaging 141 mm (5.6 in). This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Montana in August

In August, Montana sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 7°C (45°F). August is known for being in the summer season. The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Montana in August

The days are predominantly sunny, with an estimated total of around 248 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in Montana in August

Average wind conditions reach 2 m/s (4 knots) in August. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Montana.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Montana's climate page.

Montana Temperature in August

Min Temperature 7°C (45°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 56%  

Precipitation 141 mm (5.6 in)  

Rainy days 17 days  

Humidity 67% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 248 hours *  

Percentage Sunshine 65% *  

* Data from: Sion, Switzerland (14 KM, 9 Miles).

What to Wear in Montana in August

Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Montana in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Montana's climate page.

More climate data for Montana

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Montana climate overview or explore weather in Switzerland.