August weather forecast
Montana, USA

August continues the warm trend of summer in Montana, though the month may start to show slight signs of cooling, particularly towards the end. Both the western and eastern parts of the state experience warm temperatures, but localized variations persist due to Montana's diverse geography.

The minimum temperature in August ranges from 50°F (10°C) to 60°F (15.6°C), and the maximum temperature usually falls between 75°F (23.9°C) and 85°F (29.4°C). While August remains warm, it generally does not reach the peak temperatures seen in July.

Snow remains absent in August, and rainfall continues its summer pattern, being less frequent but occasionally accompanied by thunderstorms. These weather conditions can vary across the state, reflecting the influences of topography and geography.

Compared to July, August maintains much of the summer warmth but may show subtle signs of an impending seasonal shift. The days start to shorten, and while the weather remains conducive to outdoor activities, the temperatures may not be as consistently high.

August is still a popular month for tourism in Montana, with opportunities for hiking, fishing, and other outdoor pursuits. The state's national parks, such as Yellowstone and Glacier, continue to draw visitors, and the landscapes remain lush and vibrant.

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• Billings - August »
  August in Billings, Montana, sustains the heat of summer, mirroring July with an average high temperature of 83.1°F (28.4°C). August is the least humid month in Billings, with an average relative humidity of 40%.
• Missoula - August »
  August maintains the warm and dry conditions that characterized July, making it another peak summer month in Missoula. How many days does it rain in August in Missoula?
• Great Falls - August »
  In Great Falls, Montana, snow does not fall in June through August. On the first day of August in Great Falls, Montana, sunrise is at 6:04 am and sunset at 8:58 pm.
• Bozeman - August »
  With an average relative humidity of 51%, August is the least humid month in Bozeman. On the first day of August in Bozeman, sunrise is at 6:08 am and sunset at 8:52 pm.
• Butte - August »
  In Butte, Montana, in August, it is raining for 7.8 days, with typically 0.71" (18mm) of accumulated precipitation. In Butte snow does not fall in July and August.
• Helena - August »
  The months with the lowest humidity are July and August, with an average relative humidity of 46%. On the first day of August sunrise is at 6:09 am and sunset at 8:58 pm.
• Kalispell - August »
  The month with the least rainfall in Kalispell is August, when the rain falls for 6.6 days and typically collects 0.55" (14mm) of precipitation. On the last day of August, in Kalispell, sunrise is at 6:54 am and sunset at 8:19 pm MDT.
• Havre - August »
  In Havre snow does not fall in June through August. In Havre during August, the rain falls for 7.8 days and regularly aggregates up to 1.22" (31mm) of precipitation.
• Anaconda - August »
  July and August, with an average relative humidity of 50%, are the least humid months in Anaconda, Montana. July and August, with an average relative humidity of 50%, are the least humid months in Anaconda.
• Miles City - August »
  While Miles City, Montana remains quite warm during August, the average high temperature decreases slightly from the peaks experienced in July. In August, in Miles City, Montana, the rain falls for 8.3 days.
• Belgrade - August »
  August is the least humid month in Belgrade, Montana, with an average relative humidity of 49%. August is the least humid month in Belgrade with an average relative humidity of 49%.
• Livingston - August »
  On the first day of August in Livingston, sunrise is at 6:06 am and sunset at 8:50 pm. Livingston experiences peak temperatures, averaging a high-temperature of 84.9°F (29.4°C) during July and August.