Helena Valley Northeast, MT Weather & Growing Conditions
This Afternoon
74°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. North wind around 10 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Chance Showers And Thunderstorms | 10 mph N | 32% |
| Tonight | 51°F | Showers And Thunderstorms | 3 to 12 mph NW | 95% |
| Saturday | 62°F | Rain then Showers And Thunderstorms Likely | 6 to 9 mph NNW | 96% |
| Saturday Night | 46°F | Chance Light Rain | 0 to 6 mph ESE | 28% |
| Sunday | 73°F | Patchy Fog then Mostly Sunny | 0 to 3 mph SSE | 1% |
| Sunday Night | 46°F | Mostly Clear | 3 mph SSE | 0% |
| Monday | 77°F | Sunny | 1 to 7 mph S | 0% |
| Monday Night | 48°F | Mostly Clear | 0 to 6 mph SSW | 0% |
| Tuesday | 78°F | Sunny | 0 to 3 mph SE | 0% |
| Tuesday Night | 48°F | Mostly Clear | 2 mph SSW | 1% |
| Wednesday | 77°F | Sunny | 0 to 5 mph SSE | 1% |
| Wednesday Night | 48°F | Mostly Clear | 1 to 5 mph SSE | 3% |
| Thursday | 79°F | Sunny | 1 to 6 mph SE | 1% |
| Thursday Night | 49°F | Mostly Clear | 6 mph SE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Helena Valley Northeast, MT
Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
4b
Explore more for Helena Valley Northeast, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Helena Rgnl Ap, Mt (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.