Charles A Meader

Weather For Halloween 2025 Missoula Montana. Missoula — as usual, our halloween night in western montana is shaping up to be cold and wet! Missoula — foggy skies will roll in for this morning, making the start to halloween a little spoooooky.

This report shows the past weather for missoula, providing a weather history for 2025. Get the monthly weather forecast for missoula, mt, including daily high/low, historical averages, to help you plan ahead.