Flathead County (Glacier National Park)
August
Weather in Flathead County, Montana for August 2025
Your guide to Flathead County weather in August - trends and predictions
In general, the average temperature in Flathead County at the beginning of August is 28.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.9 °F by the end of August.
Flathead County experiences moderate rainfall in August, with an average of 9 rainy days and a total precipitation of 49.2 mm.
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Temperatures
Rain 🌧️
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22
Dry days
9
Rainy days
0
Snow days
26°/10°
Temperatures
11 km/h
Avg max wind
56 %
Avg humidity
Flathead County Weather August
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Temperatures trend during August in Flathead County
See the weather trend as well as the moving average line
August weather in Flathead County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 31° /12° | 0 mm | 8 | |
| Aug. 2 |  Partly cloudy | 34° /14° | 0 mm | 8 | |
| Aug. 3 | Partly cloudy | 34° /16° | 0 mm | 8 | |
| Aug. 4 |  Moderate or heavy rain shower | 23° /14° | 8.3 mm | 5 | |
| Aug. 5 |  Overcast | 29° /11° | 0 mm | 6 | |
| Aug. 6 |  Heavy rain at times | 27° /12° | 3.6 mm | 6 | |
| Aug. 7 | Moderate rain at times | 22° /12° | 2.3 mm | 5 | |
| Aug. 8 | Partly cloudy | 25° /8° | 0 mm | 7 | |
| Aug. 9 | Sunny | 27° /9° | 0 mm | 7 | |
| Aug. 10 | Partly cloudy | 27° /9° | 0 mm | 7 | |
| Aug. 11 |  Patchy rain possible | 25° /10° | 0.1 mm | 6 | |
| Aug. 12 | Overcast | 27° /12° | 0 mm | 6 | |
| Aug. 13 | Partly cloudy | 27° /11° | 0.2 mm | 7 | |
| Aug. 14 | Partly cloudy | 26° /12° | 0 mm | 7 | |
| Aug. 15 | Sunny | 28° /11° | 3.2 mm | 7 | |
| Aug. 16 | Moderate or heavy rain shower | 21° /11° | 6.4 mm | 5 | |
| Aug. 17 | Sunny | 26° /9° | 0 mm | 7 | |
| Aug. 18 | Sunny | 29° /11° | 0 mm | 7 | |
| Aug. 19 | Sunny | 29° /12° | 0 mm | 7 | |
| Aug. 20 | Partly cloudy | 26° /11° | 0.1 mm | 7 | |
| Aug. 21 | Patchy rain possible | 22° /10° | 1.1 mm | 5 | |
| Aug. 22 | Sunny | 28° /8° | 0 mm | 7 | |
| Aug. 23 | Moderate or heavy rain shower | 30° /10° | 11 mm | 7 | |
| Aug. 24 | Partly cloudy | 20° /7° | 0 mm | 6 | |
| Aug. 25 | Overcast | 17° /8° | 0 mm | 4 | |
| Aug. 26 | Sunny | 22° /6° | 0 mm | 6 | |
| Aug. 27 | Patchy rain possible | 26° /8° | 3.2 mm | 6 | |
| Aug. 28 | Heavy rain at times | 8° /4° | 9.7 mm | 2 | |
| Aug. 29 | Partly cloudy | 19° /4° | 0 mm | 5 | |
| Aug. 30 | Sunny | 25° /7° | 0 mm | 7 | |
| Aug. 31 | Sunny | 29° /7° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Flathead County in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Flathead County forecast closer to your planned date for the most up-to-date weather information.
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Flathead County in August - FAQ
What are the expected maximum and minimum temperatures in Flathead County during August?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Flathead County during August?
In August, Flathead County can expect light to moderate rainfall, totaling 49.2 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Flathead County during August?
The average wind speed in Flathead County during August is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Flathead County
Explore the daily rainfall trends and prepare for Flathead Countys August weather 💧
UV exposure in Flathead County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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