Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 90°F. 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 16th August 2025 GMT

More about Great Falls

Great Falls by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

Love Holidays: Top deals with Price Match Guarantee

  • Search for top holiday deals for popular destinations
  • Filter deals by board basis, star rating, price & more
  • Pay low deposits from £25 per person
Go to Love Holidays deal >>

View all Love Holidays offers

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 16th August 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south-west.

  • 90°F maximum temperature90
    °F maximum temperature
  • 57°F minimum temperature57
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 14 mph from the South-West14
    mph wind from SW

Back to top

Great Falls weather for Sunday 17th August 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the west.

  • 82°F maximum temperature82
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 9 mph from the West9
    mph wind from W

Back to top

Great Falls weather for Monday 18th August 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 10 mph from the south-west.

  • 88°F maximum temperature88
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 10 mph from the South-West10
    mph wind from SW

Back to top

Great Falls weather for Tuesday 19th August 2025

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 93°F, high levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 3% chance of some rain and a gentle breeze of 8 mph from the south-west.

  • 93°F maximum temperature93
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 3% chance of some rain3
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 8 mph from the South-West8
    mph wind from SW

Back to top

Great Falls weather for Wednesday 20th August 2025

Expect broken clouds in Great Falls, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the north-west.

  • 90°F maximum temperature90
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Broken clouds
    broken 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
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 12 mph from the North-West12
    mph wind from NW

Back to top

Momondo: Best deals on hotels worldwide

  • Browse the best deals on hotel stays & compare prices
  • Check lowest rates by month & also by day of the week
  • Search by date or browse hotels by destination & map
Go to Momondo deal >>

View all Momondo offers

Metric (°C)  |  Imperial (°F)

Back to top

More about the USA

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^