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Weather in Gallatin County, Montana for October 2025

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

    Snow Forecast ❄️

  • With an average of 2 snowy days, Gallatin County usually enjoys a light touch of snow in October.

    • Temperatures

  • In general, the average temperature in Gallatin County at the beginning of October is 19 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.7 °F by the end of October.

    • Rain 🌧️

  • Gallatin County experiences moderate rainfall in October, with an average of 6 rainy days and a total precipitation of 37.4 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
23
Dry days
Average rainy days
6
Rainy days
Average snowy days
2
Snow days
Average temperatures
15°/3°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
50 %
Avg humidity

Gallatin County Weather October

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

Temperatures trend during October in Gallatin County

See the weather trend as well as the moving average line

October weather in Gallatin County day by day

Click on a date for more information
September November
Date Weather Temperatures Rain Snow More
Oct. 1 Sunny
Sunny
 21° /3° 0 mm 0 cm
Oct. 2 Overcast
Overcast
 19° /7° 0 mm 0 cm
Oct. 3 Sunny
Sunny
 14° /1° 0 mm 0 cm
Oct. 4 Sunny
Sunny
 24° /3° 0 mm 0 cm
Oct. 5 Sunny
Sunny
 15° /3° 0 mm 0 cm
Oct. 6 Sunny
Sunny
 19° /6° 0 mm 0 cm
Oct. 7 Sunny
Sunny
 21° /8° 0 mm 0 cm
Oct. 8 Cloudy
Cloudy
 21° /8° 0 mm 0 cm
Oct. 9 Sunny
Sunny
 25° /10° 0 mm 0 cm
Oct. 10 Patchy rain possible
Patchy rain possible
 16° /8° 0.2 mm 0 cm
Oct. 11 Overcast
Overcast
 20° /6° 0 mm 0 cm
Oct. 12 Overcast
Overcast
 18° /8° 0 mm 0 cm
Oct. 13 Sunny
Sunny
 17° /3° 0 mm 0 cm
Oct. 14 Sunny
Sunny
 23° /7° 0 mm 0 cm
Oct. 15 Sunny
Sunny
 22° /8° 0 mm 0 cm
Oct. 16 Partly cloudy
Partly cloudy
 23° /7° 0 mm 0 cm
Oct. 17 Moderate or heavy rain shower
Moderate or heavy rain shower
 6° /0° 13.2 mm 1.5 cm
Oct. 18 Patchy moderate snow
Patchy moderate snow
 5° /0° 5.8 mm 3.6 cm
Oct. 19 Cloudy
Cloudy
 13° /0° 0 mm 0 cm
Oct. 20 Partly cloudy
Partly cloudy
 17° /5° 0 mm 0 cm
Oct. 21 Overcast
Overcast
 16° /5° 0.5 mm 0 cm
Oct. 22 Patchy rain possible
Patchy rain possible
 8° /2° 0.4 mm 0 cm
Oct. 23 Patchy rain possible
Patchy rain possible
 11° /1° 4.4 mm 0 cm
Oct. 24 Patchy rain possible
Patchy rain possible
 7° /0° 11.4 mm 0 cm
Oct. 25 Sunny
Sunny
 11° /-1° 0.6 mm 0 cm
Oct. 26 Sunny
Sunny
 14° /2° 0 mm 0 cm
Oct. 27 Overcast
Overcast
 17° /4° 0 mm 0 cm
Oct. 28 Overcast
Overcast
 5° /0° 0.7 mm 0 cm
Oct. 29 Patchy rain possible
Patchy rain possible
 2° /-4° 0.2 mm 0 cm
Oct. 30 Sunny
Sunny
 6° /-6° 0 mm 0 cm
Oct. 31 Overcast
Overcast
 6° /-5° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Gallatin County in October 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 October - FAQ

What are the expected maximum and minimum temperatures in Gallatin County during October?
Prepare for cooler days with highs just around 15° and colder nights, dipping below 3°.
How much rainfall should be expected in Gallatin County during October?
In October, Gallatin County can expect light to moderate rainfall, totaling 37.4 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Gallatin County in October 2025?
Gallatin County experiences an average snowfall of 5.1 cm during October, occurring over 2 days.
What are the typical wind conditions in Gallatin County during October?
The average wind speed in Gallatin County during October is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

Gallatin County snow forecast October 2025

Track daily snowfall levels and discover Gallatin County’s snowy potential this October ❄️

October rainfall patterns in Gallatin County

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

UV exposure in Gallatin County during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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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