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United States weather

Weather in Gallatin County, Montana for August 2026

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

    Temperatures

  • In general, the average temperature in Gallatin County at the beginning of August is 24.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 23.4 °F by the end of August.

    • Rain 🌧️

  • With an average of 5 rainy days, Gallatin County experiences minimal rainfall in August.

    • More

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Average dry days
26
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/11°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
42 %
Avg humidity

Gallatin County Weather August

Move between months or click on a day
July
September
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
27°
2
Sunny
25°
3
Sunny
25°
4
Thundery outbreaks possible
23°
5
Mist
23°
6
Partly cloudy
27°
7
Thundery outbreaks possible
24°
8
Moderate or heavy rain with thunder
16°
9
Sunny
23°
10
Sunny
23°
11
Sunny
26°
12
Sunny
29°
13
Sunny
30°
14
Sunny
28°
15
Sunny
28°
16
Overcast
29°
17
Thundery outbreaks possible
27°
18
Thundery outbreaks possible
28°
19
Patchy rain possible
31°
20
Patchy rain possible
28°
21
Moderate rain at times
26°
22
Sunny
25°
23
Moderate rain at times
27°
24
Partly cloudy
24°
25
Overcast
23°
26
Cloudy
24°
27
Partly cloudy
23°
28
Moderate rain at times
18°
29
Sunny
22°
30
Sunny
26°
31
Sunny
28°

Temperatures trend during August in Gallatin County

See the weather trend as well as the moving average line

August weather in Gallatin County day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
Aug. 1 Partly cloudy
Partly cloudy
 27° /11° 0 mm 7
Aug. 2 Sunny
Sunny
 25° /11° 0 mm 7
Aug. 3 Sunny
Sunny
 25° /10° 0 mm 7
Aug. 4 Thundery outbreaks possible
Thundery outbreaks possible
 23° /10° 0 mm 5
Aug. 5 Mist
Mist
 23° /9° 0 mm 5
Aug. 6 Partly cloudy
Partly cloudy
 27° /12° 0 mm 7
Aug. 7 Thundery outbreaks possible
Thundery outbreaks possible
 24° /11° 0 mm 5
Aug. 8 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 16° /6° 35.6 mm 4
Aug. 9 Sunny
Sunny
 23° /7° 0 mm 6
Aug. 10 Sunny
Sunny
 23° /10° 0 mm 6
Aug. 11 Sunny
Sunny
 26° /13° 0 mm 7
Aug. 12 Sunny
Sunny
 29° /12° 0 mm 7
Aug. 13 Sunny
Sunny
 30° /15° 0 mm 8
Aug. 14 Sunny
Sunny
 28° /14° 0 mm 7
Aug. 15 Sunny
Sunny
 28° /11° 0 mm 7
Aug. 16 Overcast
Overcast
 29° /14° 0 mm 6
Aug. 17 Thundery outbreaks possible
Thundery outbreaks possible
 27° /11° 0 mm 6
Aug. 18 Thundery outbreaks possible
Thundery outbreaks possible
 28° /10° 0 mm 6
Aug. 19 Patchy rain possible
Patchy rain possible
 31° /14° 0.2 mm 7
Aug. 20 Patchy rain possible
Patchy rain possible
 28° /13° 0.1 mm 6
Aug. 21 Moderate rain at times
Moderate rain at times
 26° /12° 0.2 mm 7
Aug. 22 Sunny
Sunny
 25° /10° 0 mm 7
Aug. 23 Moderate rain at times
Moderate rain at times
 27° /9° 0.6 mm 7
Aug. 24 Partly cloudy
Partly cloudy
 24° /9° 0 mm 6
Aug. 25 Overcast
Overcast
 23° /8° 0 mm 6
Aug. 26 Cloudy
Cloudy
 24° /10° 0 mm 6
Aug. 27 Partly cloudy
Partly cloudy
 23° /11° 0 mm 6
Aug. 28 Moderate rain at times
Moderate rain at times
 18° /8° 0.3 mm 4
Aug. 29 Sunny
Sunny
 22° /7° 0 mm 6
Aug. 30 Sunny
Sunny
 26° /10° 0 mm 7
Aug. 31 Sunny
Sunny
 28° /11° 0 mm 7
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Important Notice
Our weather forecast for Gallatin 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 Gallatin County forecast closer to your planned date for the most up-to-date weather information.
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Gallatin County in August - FAQ

What are the expected maximum and minimum temperatures in Gallatin County during August?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Gallatin County during August?
In August, Gallatin County can expect light to moderate rainfall, totaling 38.4 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Gallatin County during August?
The average wind speed in Gallatin County during August is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Gallatin County

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

UV exposure in Gallatin County during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Top locations in Gallatin County
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Bozeman
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Location coordinates Where is Gallatin County?

Get accurate weather forecasts for Gallatin County, located at latitude 45.68 and longitude -111.039. Stay updated with localized weather information tailored for Gallatin County.

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