Glasgow, MT – A slow-moving frontal boundary will shape the weather pattern across northeast Montana this week, leading to large temperature contrasts, occasional wintry precipitation, and changing travel conditions as Christmas approaches.
According to the National Weather Service in Glasgow, the front will meander across the region, keeping colder air near the Canadian border while milder temperatures persist along and south of Highway 200. This setup will create a wide range of daytime highs across the region through the holiday.
A chance of wintry mix, including light snow and freezing rain, is expected late tonight into Monday morning, particularly during the early commute. Additional light snow chances return early Christmas morning, though accumulations are expected to remain light at this time.
High temperatures today will range from the mid-20s to low 40s, with lows dipping into the teens and 20s. Monday’s highs are forecast between upper 20s and upper 40s, followed by cooler conditions Tuesday, with highs from the low 20s north to mid-40s south.
On Christmas Eve, partly cloudy skies are expected with highs between 20 and 47 degrees, depending on location. Christmas Day may begin with light snow, especially in colder areas, before tapering off. Highs Christmas Day are forecast to range from the mid-teens near the border to the low-to-mid 30s farther south, with lows falling to near zero in the coldest spots.
Most of the week is expected to remain mainly dry, but residents across Valley County, Daniels County, Sheridan County, and surrounding northeast Montana areas should remain alert for brief slick conditions during wintry periods.
