Montana Weather in August

With daytime temperatures of 30°C (86°F) and nighttime lows of 17°C (63°F), August in Montana brings high temperatures during the day. Some rainfall is to be expected during the month.

Rainfall in Montana in August

Based on our climate data of the past 30 years, about 5 days of rain are anticipated, with 56 mm (2.2 in) on average. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in Montana in August

Temperatures in Montana in August top out at 30°C (86°F) and drop to 17°C (63°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, it is the warmest month of the year.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July and September typically offer the best circumstances for Montana.