Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 8°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

  • Sunday
    14th Dec
    Broken clouds
  • Monday
    15th Dec
    Broken clouds
  • Tuesday
    16th Dec
    Scattered clouds
  • Wednesday
    17th Dec
    Cloudy with sleet or snow (2-5 mm of rainfall expected)
  • Thursday
    18th Dec
    Cloudy with sleet or snow (0-2 mm of rainfall expected)

5-day weather forecast updated at 04:01 on Sunday 14th December 2025 GMT

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The 5-day weather forecast for Montana (Great Falls) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Great Falls weather forecast by day

Below are the detailed weather forecasts for Great Falls for the next 5 days.

Great Falls weather for Sunday 14th December 2025

Expect broken clouds in Great Falls, Montana with a maximum temperature of 8°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 30 kph from the south-west.

  • 8°C maximum temperature8
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Fresh breeze of 30 kph from the South-West30
    kph wind from SW

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Great Falls weather for Monday 15th December 2025

Expect broken clouds in Great Falls, Montana with a maximum temperature of 11°C and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 47 kph from the south-west.

  • 11°C maximum temperature11
    °C maximum temperature
  • 5°C minimum temperature5
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 11°C wind chill11
    °C wind chill
  • Strong breeze of 47 kph from the South-West47
    kph wind from SW

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Great Falls weather for Tuesday 16th December 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 11°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate gale of 52 kph from the south-west.

  • 11°C maximum temperature11
    °C maximum temperature
  • 5°C minimum temperature5
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 11°C wind chill11
    °C wind chill
  • Moderate gale of 52 kph from the South-West52
    kph wind from SW

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Great Falls weather for Wednesday 17th December 2025

Expect cloudy with sleet or snow in Great Falls, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 29% chance of some sleet or snow and a moderate gale of 60 kph from the west.

  • 9°C maximum temperature9
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 29% chance of some sleet or snow29
    % chance of some sleet or snow
  • 2-5 mm of sleet/snow expected<5
    mm of sleet/snow expected
  • 3°C wind chill3
    °C wind chill
  • Moderate gale of 60 kph from the West60
    kph wind from W

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Great Falls weather for Thursday 18th December 2025

Expect cloudy with sleet or snow in Great Falls, Montana with a maximum temperature of 4°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 25% chance of some sleet or snow and a fresh breeze of 31 kph from the south-west.

  • 4°C maximum temperature4
    °C maximum temperature
  • -5°C minimum temperature-5
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 25% chance of some sleet or snow25
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • -2°C wind chill-2
    °C wind chill
  • Fresh breeze of 31 kph from the South-West31
    kph wind from SW

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Metric (°C / mm)  |  Imperial (°F / inches)

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