Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 29°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

5-day weather forecast updated at 04:01 on Saturday 26th July 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 Saturday 26th July 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 5-10 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 17 kph from the west.

  • 29°C maximum temperature29
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 46% chance of some rain46
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 17 kph from the West17
    kph wind from W

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Great Falls weather for Sunday 27th July 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 17 kph from the North-East17
    kph wind from NE

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Great Falls weather for Monday 28th July 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a gentle breeze of 19 kph from the north-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 34% chance of some rain34
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 19 kph from the North-East19
    kph wind from NE

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Great Falls weather for Tuesday 29th July 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 22 kph from the north-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 64% chance of some rain64
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 22 kph from the North-East22
    kph wind from NE

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Great Falls weather for Wednesday 30th July 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 42% chance of some rain and a fresh breeze of 30 kph from the north-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 42% chance of some rain42
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Fresh breeze of 30 kph from the North-East30
    kph wind from NE

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

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