Lewistown weather live forecast

Tomorrow's maximum temperature in Lewistown is expected to be 70°F.

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

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

Lewistown weather forecast by day

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

Lewistown weather for Saturday 5th July 2025

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 70°F, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 10-20 mm of rainfall expected with 88% chance of some rain and a gentle breeze of 8 mph from the north-west.

  • 70°F maximum temperature70
    °F maximum temperature
  • 52°F minimum temperature52
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 88% chance of some rain88
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 70°F wind chill70
    °F wind chill
  • Gentle breeze of 8 mph from the North-West8
    mph wind from NW

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Lewistown weather for Sunday 6th July 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 75°F, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north-west.

  • 75°F maximum temperature75
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 75°F wind chill75
    °F wind chill
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

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Lewistown weather for Monday 7th July 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 81°F, 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 light breeze of 6 mph from the south.

  • 81°F maximum temperature81
    °F maximum temperature
  • 50°F minimum temperature50
    °F 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
  • Light breeze of 6 mph from the South6
    mph wind from S

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Lewistown weather for Tuesday 8th July 2025

Expect clear skies in Lewistown, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 16 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the west.

  • 90°F maximum temperature90
    °F maximum temperature
  • 54°F minimum temperature54
    °F minimum temperature
  • Clear skies
    clear skies
  • 16 hours of bright sunshine16
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 8 mph from the West8
    mph wind from W

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Lewistown weather for Wednesday 9th July 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the south.

  • 90°F maximum temperature90
    °F maximum temperature
  • 57°F minimum temperature57
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 7 mph from the South7
    mph wind from S

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