Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 6°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

5-day weather forecast updated at 04:04 on Monday 8th December 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 Tuesday 9th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 6°C and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 77% chance of some sleet or snow and a strong breeze of 39 kph from the west.

  • 6°C maximum temperature6
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 77% chance of some sleet or snow77
    % chance of some sleet or snow
  • 5-10 mm of sleet/snow expected<10
    mm of sleet/snow expected
  • 1°C wind chill1
    °C wind chill
  • Strong breeze of 39 kph from the West39
    kph wind from W

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Lewistown weather for Wednesday 10th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 5°C and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 89% chance of some sleet or snow and a moderate breeze of 24 kph from the west.

  • 5°C maximum temperature5
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 89% chance of some sleet or snow89
    % chance of some sleet or snow
  • 10-20 mm of sleet/snow expected<20
    mm of sleet/snow expected
  • 1°C wind chill1
    °C wind chill
  • Moderate breeze of 24 kph from the West24
    kph wind from W

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Lewistown weather for Thursday 11th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 2°C and no hours of bright sunshine. There are 20-30 mm of sleet/snow expected with 80% chance of some sleet or snow and a gentle breeze of 19 kph from the north-west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -15°C minimum temperature-15
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 80% chance of some sleet or snow80
    % chance of some sleet or snow
  • 20-30 mm of sleet/snow expected<30
    mm of sleet/snow expected
  • -3°C wind chill-3
    °C wind chill
  • Gentle breeze of 19 kph from the North-West19
    kph wind from NW

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Lewistown weather for Friday 12th December 2025

Expect mostly cloudy with snow in Lewistown, Montana with a maximum temperature of -2°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 cm of snow expected with 79% chance of some snow and a gentle breeze of 13 kph from the east.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -17°C minimum temperature-17
    °C minimum temperature
  • Mostly cloudy with snow
    mostly cloudy with snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 79% chance of some snow79
    % chance of some snow
  • 5-10 cm of snow expected<10
    cm of snow expected
  • -7°C wind chill-7
    °C wind chill
  • Gentle breeze of 13 kph from the East13
    kph wind from E

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Lewistown weather for Saturday 13th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 1°C and 4 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 37% chance of some sleet or snow and a gentle breeze of 19 kph from the west.

  • 1°C maximum temperature1
    °C maximum temperature
  • -7°C minimum temperature-7
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 37% chance of some sleet or snow37
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • -4°C wind chill-4
    °C wind chill
  • Gentle breeze of 19 kph from the West19
    kph wind from W

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

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