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.
Today
63°F
Showers And Thunderstorms
Showers and thunderstorms before 9am, then rain between 9am and noon, then showers and thunderstorms likely between noon and 3pm, then a chance of rain. Cloudy. High near 63, with temperatures falling to around 60 in the afternoon. North northwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Helena Valley West Central
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Showers And Thunderstorms | 7 mph NNW | 94% |
| Tonight | 44°F | Mostly Cloudy | 1 to 5 mph NW | 13% |
| Sunday | 71°F | Mostly Sunny | 1 to 5 mph SSE | 0% |
| Sunday Night | 44°F | Mostly Clear | 5 mph S | 0% |
| Monday | 75°F | Sunny | 1 to 7 mph SSW | 0% |
| Monday Night | 45°F | Mostly Clear | 6 mph WSW | 0% |
| Tuesday | 76°F | Sunny | 1 to 5 mph S | 0% |
| Tuesday Night | 47°F | Mostly Clear | 3 mph SW | 2% |
| Wednesday | 77°F | Sunny | 1 to 7 mph S | 1% |
| Wednesday Night | 47°F | Mostly Clear | 5 mph S | 2% |
| Thursday | 78°F | Sunny | 2 to 6 mph S | 2% |
| Thursday Night | 48°F | Mostly Clear | 2 to 6 mph SSW | 4% |
| Friday | 76°F | Mostly Sunny | 2 to 7 mph S | 4% |
| Friday Night | 45°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 16% |
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 Sep 19, 2026.