Hamilton weather live forecast

Today's maximum temperature in Hamilton is expected to be 28°C. Select a day from the live weather forecast for Hamilton, Montana, USA for more weather parameters.

5-day weather forecast updated at 04:03 on Saturday 16th August 2025 GMT

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

Hamilton weather forecast by day

Below are the detailed weather forecasts for Hamilton for the next 5 days.

Hamilton weather for Saturday 16th August 2025

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.

  • 28°C maximum temperature28
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 16 kph from the North16
    kph wind from N

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Hamilton weather for Sunday 17th August 2025

Expect isolated thunderstorms in Hamilton, Montana with a maximum temperature of 26°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 49% chance of some rain and a light breeze of 10 kph from the north-west.

  • 26°C maximum temperature26
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 49% chance of some rain49
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 26°C wind chill26
    °C wind chill
  • Light breeze of 10 kph from the North-West10
    kph wind from NW

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Hamilton weather for Monday 18th August 2025

Expect isolated thunderstorms in Hamilton, Montana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 2-5 mm of rainfall expected with 14% chance of some rain and a light breeze of 12 kph from the south.

  • 30°C maximum temperature30
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 14% chance of some rain14
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 12 kph from the South12
    kph wind from S

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Hamilton weather for Tuesday 19th August 2025

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 33°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south.

  • 33°C maximum temperature33
    °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 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 12 kph from the South12
    kph wind from S

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Hamilton weather for Wednesday 20th August 2025

Expect scattered clouds in Hamilton, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    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 14 kph from the West14
    kph wind from W

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

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