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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.

Overnight
25°F
Partly Cloudy
Partly cloudy. Low around 25, with temperatures rising to around 28 overnight. Wind around 0 mph.

7-day forecast for Helena Valley Northeast

WhenTempForecastWindPrecip
Overnight 25°F Partly Cloudy 0 mph 0%
Wednesday 50°F Mostly Sunny 1 mph WNW 0%
Wednesday Night 25°F Mostly Clear 2 mph S 0%
Thursday 50°F Partly Sunny 0 to 5 mph S 1%
Thursday Night 26°F Partly Cloudy 5 mph SSW 1%
Friday 52°F Mostly Sunny 3 to 9 mph S 0%
Friday Night 32°F Partly Cloudy 3 to 13 mph S 0%
Saturday 57°F Mostly Sunny 2 to 6 mph SSE 0%
Saturday Night 32°F Partly Cloudy 5 to 8 mph SSE 0%
Sunday 62°F Mostly Sunny 5 to 8 mph S 2%
Sunday Night 31°F Partly Cloudy 0 to 6 mph W 2%
Monday 55°F Mostly Sunny 2 mph SE 0%
Monday Night 31°F Mostly Cloudy 2 mph S 0%
Tuesday 59°F Mostly Sunny 1 to 6 mph S 2%

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

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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 Nov 4, 2026.