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). On the first day of August in Billings sunrise is at 5:57 am and sunset at 8:43 pm.
• Missoula - August »
  As Missoula welcomes August, the average high-temperature is noted at a still warm 79.7°F (26.5°C), closely aligning with the preceding month. In Missoula during August, the rain falls for 3.3 days and regularly aggregates up to 0.24" (6mm) of precipitation.
• Great Falls - August »
  With an average relative humidity of 40%, August is the least humid month in Great Falls, Montana. Great Falls registers an average high-temperature of a still moderately hot 81.9°F (27.7°C) with the arrival of August, showing minor deviation from the preceding month.
• Bozeman - August »
  August is the least humid month in Bozeman with an average relative humidity of 51%. In Bozeman snow does not fall in July and August.
• Butte - August »
  In Butte during August, the rain falls for 7.8 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Butte, during August, the rain falls for 7.8 days and regularly aggregates up to 0.71" (18mm) of precipitation.
• Helena - August »
  The months with the lowest humidity in Helena are July and August, with an average relative humidity of 46%. On the first day of August in Helena, Montana, sunrise is at 6:08 am and sunset at 8:59 pm.
• Kalispell - August »
  Kalispell observes a distinct decrease from peak daytime temperatures, with an average low-temperature of 46.4°F (8°C) throughout the month of August. In Kalispell, during August, the rain falls for 6.6 days and regularly aggregates up to 0.55" (14mm) of precipitation.
• Havre - August »
  In Havre, in August, during 7.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Havre, in August, during 7.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.
• Anaconda - August »
  In Anaconda, Montana, snow does not fall in July and August. July and August, with an average relative humidity of 50%, are the least humid months in Anaconda, Montana.
• Miles City - August »
  August is the least humid month in Miles City with an average relative humidity of 39%. Miles City experiences a minor change to a moderately hot 84.7°F (29.3°C) in average high-temperature during August, closely reflecting July.
• Belgrade - August »
  On the first day of August in Belgrade, sunrise is at 6:07 am and sunset at 8:54 pm. In Belgrade, in August, during 11.6 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.
• Livingston - August »
  On the first day of August in Livingston, sunrise is at 6:05 am and sunset at 8:51 pm. On the first day of August in Livingston, sunrise is at 6:05 am and sunset at 8:51 pm.