Weather forecast for: Boulder MT
Last Update: 12:31 am MDT Sep 19, 2026
Overnight: Showers and possibly a thunderstorm. Steady temperature around 53. North wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 56. North wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night: A 30 percent chance of rain, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 44. Northeast wind around 5 mph becoming calm in the evening.
Sunday: Mostly sunny, with a high near 68. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night: Mostly clear, with a low around 44. East wind around 5 mph becoming calm in the evening.
Monday: Sunny, with a high near 73. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night: Mostly clear, with a low around 46. West wind around 6 mph becoming calm in the evening.
Tuesday: Sunny, with a high near 74. Calm wind becoming south southwest around 6 mph in the afternoon.
Tuesday Night: Partly cloudy, with a low around 47.
Wednesday: Sunny, with a high near 75.
Wednesday Night: Mostly clear, with a low around 48.
Thursday: Sunny, with a high near 76.
Thursday Night: Mostly clear, with a low around 49.
Friday: Mostly sunny, with a high near 75.
WeatherWorld.com
