Helena Valley West Central, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Helena Valley West Central, a community in Lewis And Clark County, Montana.
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. Wind around 0 mph.
7-day forecast for Helena Valley West Central
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 77°F | Patchy Smoke | 0 to 5 mph NE | 0% |
| Tuesday Night | 47°F | Mostly Clear | 2 to 6 mph NNW | 1% |
| Wednesday | 85°F | Sunny | 5 mph W | 0% |
| Wednesday Night | 50°F | Mostly Clear | 3 to 7 mph W | 0% |
| Thursday | 92°F | Sunny | 1 to 9 mph WSW | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 12 mph W | 0% |
| Friday | 96°F | Sunny | 1 to 17 mph SW | 1% |
| Friday Night | 56°F | Mostly Clear | 7 to 18 mph W | 0% |
| Saturday | 92°F | Sunny | 1 to 13 mph WSW | 0% |
| Saturday Night | 56°F | Mostly Clear | 5 to 12 mph WNW | 0% |
| Sunday | 90°F | Sunny | 1 to 8 mph NW | 1% |
| Sunday Night | 55°F | Mostly Clear | 5 to 10 mph WNW | 1% |
| Monday | 87°F | Sunny | 1 to 7 mph N | 1% |
Forecast source: National Weather Service (api.weather.gov) for Helena Valley West Central (46.660, -112.059). Updated through the day.
Growing snapshot for Helena Valley West Central
Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
More local growing data for Helena Valley West Central: nearby ZIP 59625 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Canyon Creek
Craig
East Helena
Helena
Helena Valley Northeast
Helena Valley Northwest
Helena Valley Southeast
Helena West Side
Lincoln
Marysville
Milford Colony
Montana City
Rimini
South Hills
Spokane Creek
Unionville
Wolf Creek
York
Climate data from the nearest NOAA station, Helena Rgnl Ap, Mt (3.6 mi from Helena Valley West Central). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.