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Weather in Great Falls, Montana for October 2026

Your guide to Great Falls weather in October - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, Great Falls usually enjoys a light touch of snow in October.
    According to Great Falls snow forecast for October 2026, 1 snowy day is expected until the end of the month at Tuesday, October 27.

    • Temperatures

  • The forecast for the next days in Great Falls predicts a temperature of 6.3 °C, which is cooler than the historical average.

    • Rain 🌧️

  • With an average of 2 rainy days, Great Falls experiences minimal rainfall in October.

    • More

  • Is October a good time to visit Great Falls? check out the best time to travel to Great Falls page.

  • ✨ Is October a good time to visit Great Falls? – Ask the AI Weatherman

Average dry days
26
Dry days
Average rainy days
2
Rainy days
Average snowy days
3
Snow days
Average temperatures
15°/2°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
58 %
Avg humidity

Great Falls Weather October

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

Temperatures trend during October in Great Falls

See the weather trend as well as the moving average line

October weather in Great Falls day by day

Click on a date for more information
September November
Date Weather Temperatures Rain Snow More
Oct. 1 Sunny
Sunny
 20° /6° 0 mm 0 cm
Oct. 2 Overcast
Overcast
 24° /7° 0 mm 0 cm
Oct. 3 Heavy rain at times
Heavy rain at times
 16° /8° 13.2 mm 0 cm
Oct. 4 Mist
Mist
 19° /7° 0 mm 0 cm
Oct. 5 Light snow
Light snow
 18° /6° 14.9 mm 4 cm
Oct. 6 Overcast
Overcast
 21° /5° 0 mm 0 cm
Oct. 7 Sunny
Sunny
 22° /6° 0 mm 0 cm
Oct. 8 Sunny
Sunny
 24° /7° 0 mm 0 cm
Oct. 9 Sunny
Sunny
 23° /8° 0 mm 0 cm
Oct. 10 Light snow
Light snow
 20° /2° 8.2 mm 3.2 cm
Oct. 11 Light snow
Light snow
 8° /3° 14.8 mm 4.7 cm
Oct. 12 Light snow
Light snow
 5° /-1° 8.3 mm 4.8 cm
Oct. 13 Light snow
Light snow
 5° /-2° 1.9 mm 1.4 cm
Oct. 14 Mist
Mist
 9° /1° 0 mm 0 cm
Oct. 15 Moderate rain
Moderate rain
 8° /2° 16.6 mm 0 cm
Oct. 16 Fog
Fog
 15° /2° 0 mm 0 cm
Oct. 17 Overcast
Overcast
 16° /5° 0 mm 0 cm
Oct. 18 Overcast
Overcast
 13° /3° 0 mm 0 cm
Oct. 19 Overcast
Overcast
 17° /5° 0 mm 0 cm
Oct. 20 Thundery outbreaks possible
Thundery outbreaks possible
 13° /4° 0 mm 0 cm
Oct. 21 Partly cloudy
Partly cloudy
 19° /4° 0 mm 0 cm
Oct. 22 Sunny
Sunny
 21° /4° 0 mm 0 cm
Oct. 23 Light snow
Light snow
 15° /0° 13.4 mm 3.1 cm
Oct. 24 Cloudy
Cloudy
 12° /0° 0 mm 0 cm
Oct. 25 Mist
Mist
 2° /-6° 0 mm 0 cm
Oct. 26 Cloudy
Cloudy
 5° /-4° 0 mm 0 cm
Oct. 27 Patchy rain possible
Patchy rain possible
 8° /0° 1.4 mm 0.2 cm
Oct. 28 Sunny
Sunny
 10° /0° 0 mm 0 cm
Oct. 29 Overcast
Overcast
 6° /-1° 0 mm 0 cm
Oct. 30 Cloudy
Cloudy
 5° /0° 0 mm 0 cm
Oct. 31 Patchy rain possible
Patchy rain possible
 8° /3° 2.2 mm 0 cm
Next
Important Notice
Our weather forecast for Great Falls 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 Great Falls forecast closer to your planned date for the most up-to-date weather information.
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Great Falls in October - FAQ

What are the expected maximum and minimum temperatures in Great Falls during October?
Prepare for cooler days with highs just around 15° and colder nights, dipping below 2°.

How much rainfall should be expected in Great Falls during October?
Moderate rainfall is anticipated in Great Falls during October, with a total of 78 mm spread over approximately 2 days. Considering plans for rainy days is advisable.

Will it snow in Great Falls in October 2026?
Great Falls experiences an average snowfall of 18.1 cm during October, occurring over 3 days.

What are the typical wind conditions in Great Falls during October?
The average wind speed in Great Falls during October is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

Great Falls snow forecast October 2026

Track daily snowfall levels and discover Great Falls’s snowy potential this October ❄️
On average, Great Falls sees 3 snowy days during October, with approximately 18.1 cm of total snowfall.

October rainfall patterns in Great Falls

Explore the daily rainfall trends and prepare for Great Fallss October weather 💧
Typically, Great Falls has 2 rainy days in October with a total of 78 mm of rainfall.

UV exposure in Great Falls during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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Get accurate weather forecasts for Great Falls, located at latitude 47.5 and longitude -111.301. Stay updated with localized weather information tailored for Great Falls.

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