Helena Valley Northeast, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Helena Valley Northeast, a community in Lewis And Clark County, Montana.
This Afternoon
65°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 3pm, then a chance of rain. Cloudy. High near 65, with temperatures falling to around 62 in the afternoon. North northwest wind around 5 mph. Chance of precipitation is 70%.
7-day forecast for Helena Valley Northeast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Showers And Thunderstorms Likely | 5 mph NNW | 69% |
| Tonight | 43°F | Mostly Cloudy then Patchy Fog | 0 to 3 mph ENE | 7% |
| Sunday | 73°F | Patchy Fog then Mostly Sunny | 0 to 3 mph ESE | 2% |
| Sunday Night | 44°F | Mostly Clear | 3 mph SSE | 0% |
| Monday | 78°F | Sunny | 1 to 7 mph S | 0% |
| Monday Night | 45°F | Mostly Clear | 1 to 6 mph SW | 0% |
| Tuesday | 79°F | Sunny | 0 to 3 mph SSE | 0% |
| Tuesday Night | 46°F | Mostly Clear | 2 mph SW | 2% |
| Wednesday | 79°F | Sunny | 0 to 6 mph SE | 1% |
| Wednesday Night | 47°F | Mostly Clear | 5 mph S | 2% |
| Thursday | 80°F | Sunny | 2 to 6 mph SE | 2% |
| Thursday Night | 47°F | Mostly Clear | 6 mph S | 5% |
| Friday | 78°F | Mostly Sunny | 3 to 7 mph S | 3% |
| Friday Night | 44°F | Slight Chance Light Rain then Partly Cloudy | 6 to 9 mph NW | 17% |
Forecast source: National Weather Service (api.weather.gov) for Helena Valley Northeast (46.707, -111.939). Updated through the day.
Growing snapshot for Helena Valley Northeast
Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
4b
More local growing data for Helena Valley Northeast: nearby ZIP 59602 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Canyon Creek
Craig
East Helena
Helena
Helena Valley Northwest
Helena Valley Southeast
Helena Valley West Central
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 (8.8 mi from Helena Valley Northeast). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.