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Weather in Yellowstone County, Montana for August 2025

Your guide to Yellowstone County weather in August - trends and predictions

    Temperatures

  • In general, the average temperature in Yellowstone County at the beginning of August is 33 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.9 °F by the end of August.

  • Rain 🌧️

  • The climate of Yellowstone County in August is notably wet, with an average of 11 rainy days, and a total of 19.1 mm of precipitation.

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Average dry days
20
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/16°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
38 %
Avg humidity

Yellowstone County Weather August

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Temperatures trend during August in Yellowstone County

See the weather trend as well as the moving average line

August weather in Yellowstone County day by day

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Date Weather Temperatures Rain UV More
Aug. 1 Sunny
Sunny
36° /18° 0 mm 9
Aug. 2 Partly cloudy
Partly cloudy
40° /20° 0 mm 10
Aug. 3 Sunny
Sunny
38° /20° 0 mm 9
Aug. 4 Moderate or heavy rain shower
Moderate or heavy rain shower
33° /20° 6 mm 7
Aug. 5 Sunny
Sunny
31° /15° 0 mm 8
Aug. 6 Cloudy
Cloudy
32° /17° 0 mm 7
Aug. 7 Heavy rain at times
Heavy rain at times
21° /16° 3.3 mm 5
Aug. 8 Overcast
Overcast
20° /12° 0 mm 5
Aug. 9 Partly cloudy
Partly cloudy
26° /12° 0 mm 7
Aug. 10 Partly cloudy
Partly cloudy
27° /13° 0 mm 7
Aug. 11 Patchy rain possible
Patchy rain possible
27° /14° 0.9 mm 6
Aug. 12 Partly cloudy
Partly cloudy
31° /15° 0.7 mm 8
Aug. 13 Patchy rain possible
Patchy rain possible
30° /15° 0.2 mm 7
Aug. 14 Heavy rain at times
Heavy rain at times
29° /15° 1.3 mm 6
Aug. 15 Sunny
Sunny
29° /16° 0 mm 7
Aug. 16 Sunny
Sunny
31° /17° 0.3 mm 8
Aug. 17 Sunny
Sunny
32° /16° 0 mm 8
Aug. 18 Moderate rain at times
Moderate rain at times
34° /19° 0.5 mm 7
Aug. 19 Patchy rain possible
Patchy rain possible
34° /20° 0.3 mm 7
Aug. 20 Patchy rain possible
Patchy rain possible
34° /18° 0.2 mm 7
Aug. 21 Patchy rain possible
Patchy rain possible
33° /17° 0.3 mm 7
Aug. 22 Sunny
Sunny
31° /15° 0 mm 8
Aug. 23 Cloudy
Cloudy
35° /17° 0 mm 8
Aug. 24 Cloudy
Cloudy
34° /18° 0 mm 7
Aug. 25 Sunny
Sunny
27° /16° 0 mm 7
Aug. 26 Heavy rain at times
Heavy rain at times
23° /15° 3.6 mm 5
Aug. 27 Partly cloudy
Partly cloudy
31° /12° 0 mm 8
Aug. 28 Heavy rain at times
Heavy rain at times
24° /14° 1.5 mm 5
Aug. 29 Sunny
Sunny
27° /12° 0 mm 7
Aug. 30 Sunny
Sunny
33° /12° 0 mm 8
Aug. 31 Sunny
Sunny
30° /16° 0 mm 8
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Important Notice
Our weather forecast for Yellowstone 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 Yellowstone County forecast closer to your planned date for the most up-to-date weather information.

Yellowstone County in August - FAQ

What are the expected maximum and minimum temperatures in Yellowstone County during August?
Expect warm days with temperatures around 30°, cooling to mild conditions of 16° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Yellowstone County during August?
Expect minimal rainfall in Yellowstone County during August, with a total of 19.1 mm over approximately 11 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Yellowstone County during August?
The average wind speed in Yellowstone County during August is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Yellowstone County

Explore the daily rainfall trends and prepare for Yellowstone Countys August weather 💧

UV exposure in Yellowstone County during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Location coordinates Where is Yellowstone County?

Get accurate weather forecasts for Yellowstone County, located at latitude 45.783 and longitude -108.501. Stay updated with localized weather information tailored for Yellowstone County.

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