Helena Valley Northwest has a long growing season
Helena Valley Northwest has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 85°, a January night drops to 15°, and about 37 inches of snow falls in a normal winter. A typical November afternoon reaches 42°, and nights fall to 23°.
Getting the latest forecast from the National Weather Service…
What stands out about Helena Valley Northwest’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Helena Valley Northwest’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Helena Valley Northwest.
Your answer becomes a post in Town Square.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Helena Valley Northwest itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Helena Rgnl Airport, MT (10 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.