With a population of around 3,500, Helena Valley Northwest sits in Montana, United States. The city operates in the Mountain Time Zone.
In 2025, Helena Valley Northwest recorded an average annual temperature of 44°F — about 1.2°F below the 30-year normal of 46°F. The hottest day reached 93°F in July; the coldest was -28°F in February. Total precipitation was 16 inches (wetter than usual). Snowfall totaled 17 inches, below the 37-inch average. The wettest month was December.
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