Weather forecast for: Grass Range MT
Last Update: 4:26 am MDT Sep 21, 2026
Today: Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 72. South wind 5 to 14 mph, with gusts as high as 22 mph.
Tonight: Mostly clear, with a low around 47. South southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Tuesday: Sunny, with a high near 79. Calm wind becoming east southeast around 6 mph in the afternoon.
Tuesday Night: Mostly cloudy, with a low around 52. East southeast wind around 7 mph becoming west southwest after midnight.
Wednesday: Mostly sunny, with a high near 80. West southwest wind around 6 mph.
Wednesday Night: Mostly clear, with a low around 53. Light and variable wind becoming southwest 5 to 8 mph in the evening.
Thursday: Sunny, with a high near 83. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.
Thursday Night: Mostly clear, with a low around 56. South southeast wind 10 to 13 mph, with gusts as high as 21 mph.
Friday: Sunny, with a high near 83.
Friday Night: A slight chance of rain before midnight. Partly cloudy, with a low around 50. Breezy.
Saturday: Mostly sunny, with a high near 68.
Saturday Night: A slight chance of rain. Partly cloudy, with a low around 43.
Sunday: A slight chance of rain. Partly sunny, with a high near 66.
WeatherWorld.com
