Marine Weather and Tide Forecast for Somers, MT

FXUS65 KMSO 280859 AFDMSO

Area Forecast Discussion National Weather Service Missoula MT 159 AM MST Sat Feb 28 2026

DISCUSSION

KEY MESSAGES:

- Localized light rain and mountain snow showers to the southern half of the forecast area Sunday afternoon into Monday.

- Widespread precipitation arrives Wednesday with snow levels initially around 5,000 ft.

The backdoor cold front that threatened to spill over the Continental Divide has largely been repelled, leaving dry and mild conditions in place west of the Divide. Aside from a few lingering snow showers and a wind shift at Marias Pass this morning.

Elsewhere: High pressure will lead to dry conditions, less wind, and high temperatures reaching the 40s to low 50s in the lower valleys today.

Sunday through Monday: Confidence is increasing in a subtle shift for our southern regions. Dynamic models are now in better agreement that a warm front will clip the southern half of the forecast area (specifically north-central Idaho, Lemhi County and southwest Montana). Expect increasing clouds and a 30-40% chance of light showers starting Sunday afternoon. This will likely manifest as light rain in the valleys, with light snow for the higher peaks.

Tuesday: The mild trend continues as the ridge of high pressure reaches its peak strength. This will likely be the warmest day of the week for many locations. Cloud cover will begin to increase from the west late in the day ahead of the next change in the weather pattern.

Wednesday and Thursday: A dip in the jet stream will bring a Pacific trough across the Northern Rockies. Rain and snow showers will return to the forecast. Initially, snow levels will be high (near 5,000 feet)
before dropping back to at or near valley floors by Thursday morning as cooler air filters in behind the system. Westerly winds will become breezy once again, especially across the higher terrain and the Continental Divide.

Friday through Next Weekend: Unsettled northwest flow looks to persist into the following weekend. While no major storms are immediately apparent, weak disturbances will keep hit-or-miss snow showers in the mountains.
We are also monitoring long-range signals for a potential Arctic intrusion towards the end of the first week of March, though confidence in that specific timing remains low.
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