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Montana (Glacier National Park)
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Weather in Montana for October 2026

Your guide to Montana weather in October - trends and predictions

    Snow Forecast ❄️

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

    • Temperatures

  • In general, the average temperature in Montana at the beginning of October is 16 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 6.6 °C by the end of October.

    • Rain 🌧️

  • The climate of Montana in October is notably wet, with an average of 11 rainy days, and a total of 114.5 mm of precipitation.

    • More

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

Average dry days
18
Dry days
Average rainy days
11
Rainy days
Average snowy days
2
Snow days
Average temperatures
12°/3°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
64 %
Avg humidity

Montana Weather October

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

What’s the Weather Like in Montana This October?

Discover the average temperatures and weather trends across Montana’s cities this October.
CloudyGlacier National Park12 °C / 3 °CCloudyBozeman13 °C / 2 °CCloudyBillings18 °C / 4 °CCloudyMissoula14 °C / 3 °CCloudyHelena11 °C / 0 °CCloudyGreat Falls13 °C / 2 °CCloudyButte9 °C / 0 °CCloudyBig Sky7 °C / 0 °CMore Locations

Temperatures trend during October in Montana

See the weather trend as well as the moving average line

October weather in Montana day by day

Click on a date for more information
September November
Date Weather Temperatures Rain Snow More
Oct. 1 Overcast
Overcast
 17° /6° 3.5 mm 0 cm
Oct. 2 Sunny
Sunny
 15° /8° 0 mm 0 cm
Oct. 3 Sunny
Sunny
 16° /5° 0 mm 0 cm
Oct. 4 Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /5° 1.2 mm 0 cm
Oct. 5 Overcast
Overcast
 11° /3° 0.5 mm 0 cm
Oct. 6 Partly cloudy
Partly cloudy
 17° /1° 0 mm 0 cm
Oct. 7 Sunny
Sunny
 20° /5° 0 mm 0 cm
Oct. 8 Sunny
Sunny
 21° /5° 0 mm 0 cm
Oct. 9 Overcast
Overcast
 20° /6° 0 mm 0 cm
Oct. 10 Partly cloudy
Partly cloudy
 19° /6° 0 mm 0 cm
Oct. 11 Cloudy
Cloudy
 16° /5° 0 mm 0 cm
Oct. 12 Sunny
Sunny
 13° /2° 37.4 mm 15.1 cm
Oct. 13 Sunny
Sunny
 11° /1° 0 mm 0 cm
Oct. 14 Partly cloudy
Partly cloudy
 15° /3° 0 mm 0 cm
Oct. 15 Overcast
Overcast
 16° /4° 0 mm 0 cm
Oct. 16 Heavy rain at times
Heavy rain at times
 11° /3° 1.8 mm 0 cm
Oct. 17 Moderate or heavy rain shower
Moderate or heavy rain shower
 8° /0° 4.6 mm 0 cm
Oct. 18 Partly cloudy
Partly cloudy
 9° /-1° 0.2 mm 0 cm
Oct. 19 Overcast
Overcast
 9° /3° 25.4 mm 0 cm
Oct. 20 Overcast
Overcast
 12° /4° 1.6 mm 0 cm
Oct. 21 Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /2° 8.7 mm 0 cm
Oct. 22 Patchy rain possible
Patchy rain possible
 11° /-2° 2.3 mm 0 cm
Oct. 23 Overcast
Overcast
 9° /0° 0 mm 0 cm
Oct. 24 Patchy rain possible
Patchy rain possible
 10° /1° 0.2 mm 0 cm
Oct. 25 Partly cloudy
Partly cloudy
 9° /1° 2.8 mm 0 cm
Oct. 26 Partly cloudy
Partly cloudy
 10° /0° 2.8 mm 0 cm
Oct. 27 Moderate rain at times
Moderate rain at times
 8° /1° 9.3 mm 1.6 cm
Oct. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
 5° /-1° 12.1 mm 0 cm
Oct. 29 Overcast
Overcast
 5° /0° 0 mm 0 cm
Oct. 30 Mist
Mist
 2° /-2° 0 mm 0 cm
Oct. 31 Overcast
Overcast
 7° /-3° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Montana 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 Montana forecast closer to your planned date for the most up-to-date weather information.
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Montana in October - FAQ

What are the expected maximum and minimum temperatures in Montana during October?
Prepare for cooler days with highs just around 12° and colder nights, dipping below 3°.

How much rainfall should be expected in Montana during October?
Significant rainfall exceeding 114.5 mm is expected in Montana during October, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Montana in October 2026?
Montana experiences an average snowfall of 16.69 cm during October, occurring over 2 days.

What are the typical wind conditions in Montana during October?
The average wind speed in Montana during October is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

Montana snow forecast October 2026

Track daily snowfall levels and discover Montana’s snowy potential this October ❄️
On average, Montana sees 2 snowy days during October, with approximately 16.7 cm of total snowfall.

October rainfall patterns in Montana

Explore the daily rainfall trends and prepare for Montanas October weather 💧
Typically, Montana has 11 rainy days in October with a total of 114.5 mm of rainfall.

UV exposure in Montana during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
Counties in Montana
Select a county for an accurate weather forecast
Cascade CountyFlathead CountyGallatin CountyLewis and Clark CountyMissoula CountySilver Bow CountyYellowstone County
Top locations in Montana
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Big SkyBillingsBozemanButteGlacier National ParkGreat FallsHelenaMissoula
More Locations

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Location coordinates Where is Montana?

Get accurate weather forecasts for Montana, located at latitude 48.683 and longitude -113.8. Stay updated with localized weather information tailored for Montana.

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