Great Falls weather live forecast

Tomorrow's maximum temperature in Great Falls is expected to be 23°C.

5-day weather forecast updated at 04:00 on Sunday 25th May 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 25th May 2025

Expect clear skies in Great Falls, Montana with a maximum temperature of 23°C, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the east.

  • 23°C maximum temperature23
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Clear skies
    clear skies
  • 15 hours of bright sunshine15
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 19 kph from the East19
    kph wind from E

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Great Falls weather for Monday 26th May 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 16 kph from the east.

  • 26°C maximum temperature26
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 26°C wind chill26
    °C wind chill
  • Gentle breeze of 16 kph from the East16
    kph wind from E

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Great Falls weather for Tuesday 27th May 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 23°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 19% chance of some rain and a gentle breeze of 16 kph from the west.

  • 23°C maximum temperature23
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 19% chance of some rain19
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 23°C wind chill23
    °C wind chill
  • Gentle breeze of 16 kph from the West16
    kph wind from W

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Great Falls weather for Wednesday 28th May 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 24°C, maximum UV of 7 (High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north-east.

  • 24°C maximum temperature24
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 15 hours of bright sunshine15
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 24°C wind chill24
    °C wind chill
  • Moderate breeze of 21 kph from the North-East21
    kph wind from NE

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Great Falls weather for Thursday 29th May 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

  • 27°C maximum temperature27
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 13 hours of bright sunshine13
    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 18 kph from the South18
    kph wind from S

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Expires at 23:59 on Wednesday 31st Dec 2025

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

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