Lewistown weather live forecast

Tomorrow's maximum temperature in Lewistown is expected to be 84°F.

5-day weather forecast updated at 04:03 on Saturday 12th 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 12th July 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 9 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the north-west.

  • 84°F maximum temperature84
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 14 mph from the North-West14
    mph wind from NW

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Lewistown weather for Sunday 13th July 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north-west.

  • 88°F maximum temperature88
    °F maximum temperature
  • 55°F minimum temperature55
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    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 9 mph from the North-West9
    mph wind from NW

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Lewistown weather for Monday 14th July 2025

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 14 mph from the north-west.

  • 88°F maximum temperature88
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 66% chance of some rain66
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 14 mph from the North-West14
    mph wind from NW

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Lewistown weather for Tuesday 15th July 2025

Expect mostly cloudy with rain in Lewistown, Montana with a maximum temperature of 61°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 30-40 mm of rainfall expected with 76% chance of some rain and a gentle breeze of 11 mph from the east.

  • 61°F maximum temperature61
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 76% chance of some rain76
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • 61°F wind chill61
    °F wind chill
  • Gentle breeze of 11 mph from the East11
    mph wind from E

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Lewistown weather for Wednesday 16th July 2025

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 57°F, maximum UV of 5 (Moderate) and 13 hours of bright sunshine. There are 0-2 mm of rainfall expected with 64% chance of some rain and a gentle breeze of 9 mph from the east.

  • 57°F maximum temperature57
    °F maximum temperature
  • 48°F minimum temperature48
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 64% chance of some rain64
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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