Great Falls weather live forecast

Tomorrow's maximum temperature in Great Falls is expected to be 9°C.

  • Monday
    5th May
    Mostly cloudy with rain (20-30 mm of rainfall expected)
  • Tuesday
    6th May
    Scattered clouds
  • Wednesday
    7th May
    Clear skies
  • Thursday
    8th May
    Sunshine and showers (0-2 mm of rainfall expected)
  • Friday
    9th May
    Clear skies

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

Expect mostly cloudy with rain in Great Falls, Montana with a maximum temperature of 9°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 89% chance of some rain and a moderate breeze of 25 kph from the north.

  • 9°C maximum temperature9
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 89% chance of some rain89
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Moderate breeze of 25 kph from the North25
    kph wind from N

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Great Falls weather for Tuesday 6th May 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 14°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 26 kph from the East26
    kph wind from E

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Great Falls weather for Wednesday 7th May 2025

Expect clear skies in Great Falls, Montana with a maximum temperature of 23°C, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the south-west.

  • 23°C maximum temperature23
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Clear skies
    clear skies
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 23°C wind chill23
    °C wind chill
  • Fresh breeze of 29 kph from the South-West29
    kph wind from SW

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Great Falls weather for Thursday 8th May 2025

Expect sunshine and showers in Great Falls, Montana with a maximum temperature of 23°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 9% chance of some rain and a fresh breeze of 29 kph from the west.

  • 23°C maximum temperature23
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 9% chance of some rain9
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 23°C wind chill23
    °C wind chill
  • Fresh breeze of 29 kph from the West29
    kph wind from W

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Great Falls weather for Friday 9th May 2025

Expect clear skies in Great Falls, Montana with a maximum temperature of 23°C, maximum UV of 7 (High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-east.

  • 23°C maximum temperature23
    °C maximum temperature
  • 6°C minimum temperature6
    °C minimum temperature
  • Clear skies
    clear skies
  • 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
  • 23°C wind chill23
    °C wind chill
  • Gentle breeze of 17 kph from the South-East17
    kph wind from SE

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

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