Weather in Lewistown, Montana, United States

7-Day Detailed Weather Forecast for Lewistown

Overnight

Temperature: 11°F

Wind Speed: 13 mph

Wind Direction: SW

Forecast: A chance of snow after 5am. Mostly cloudy. Low around 11, with temperatures rising to around 33 overnight. Southwest wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible.

Saturday

Temperature: 15°F

Wind Speed: 14 to 23 mph

Wind Direction: WNW

Forecast: A chance of snow before 11am. Mostly cloudy. High near 15, with temperatures falling to around 4 in the afternoon. Wind chill values as low as -23. West northwest wind 14 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.

Saturday Night

Temperature: -6°F

Wind Speed: 7 to 18 mph

Wind Direction: WNW

Forecast: Partly cloudy. Low around -6, with temperatures rising to around 1 overnight. Wind chill values as low as -23. West northwest wind 7 to 18 mph, with gusts as high as 28 mph.

Sunday

Temperature: 20°F

Wind Speed: 7 mph

Wind Direction: WSW

Forecast: Sunny, with a high near 20. Wind chill values as low as -11. West southwest wind around 7 mph.

Sunday Night

Temperature: 10°F

Wind Speed: 6 mph

Wind Direction: SW

Forecast: Mostly clear, with a low around 10. Southwest wind around 6 mph.

Monday

Temperature: 41°F

Wind Speed: 6 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 41. West southwest wind around 6 mph.

Monday Night

Temperature: 26°F

Wind Speed: 6 mph

Wind Direction: WSW

Forecast: Mostly cloudy, with a low around 26. West southwest wind around 6 mph.

Tuesday

Temperature: 48°F

Wind Speed: 6 mph

Wind Direction: WSW

Forecast: Partly sunny, with a high near 48. West southwest wind around 6 mph.

Tuesday Night

Temperature: 28°F

Wind Speed: 6 mph

Wind Direction: WSW

Forecast: A slight chance of rain and snow after 5am. Mostly cloudy, with a low around 28.

Wednesday

Temperature: 42°F

Wind Speed: 6 mph

Wind Direction: WNW

Forecast: A slight chance of rain and snow. Mostly cloudy, with a high near 42.

Wednesday Night

Temperature: 20°F

Wind Speed: 6 mph

Wind Direction: S

Forecast: A slight chance of snow before 11pm. Mostly cloudy, with a low around 20.

New Year's Day

Temperature: 43°F

Wind Speed: 6 mph

Wind Direction: SSE

Forecast: Partly sunny, with a high near 43.

Thursday Night

Temperature: 26°F

Wind Speed: 6 mph

Wind Direction: S

Forecast: A slight chance of snow after 5am. Mostly cloudy, with a low around 26.

Friday

Temperature: 46°F

Wind Speed: 7 mph

Wind Direction: SW

Forecast: A slight chance of snow. Mostly cloudy, with a high near 46.