Helena Valley Northeast, MT Weather & Growing Conditions
Today
78°F
Patchy Smoke
Patchy smoke between 11am and 3pm. Sunny, with a high near 78. Northeast wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Smoke | 0 to 3 mph NE | 0% |
| Tonight | 46°F | Mostly Clear | 0 to 3 mph NNE | 1% |
| Wednesday | 85°F | Sunny | 0 to 3 mph SW | 0% |
| Wednesday Night | 49°F | Mostly Clear | 0 to 7 mph W | 0% |
| Thursday | 93°F | Sunny | 0 to 6 mph SW | 0% |
| Thursday Night | 53°F | Mostly Clear | 0 to 10 mph W | 0% |
| Friday | 97°F | Sunny | 0 to 16 mph SSW | 0% |
| Friday Night | 55°F | Mostly Clear | 2 to 16 mph W | 0% |
| Saturday | 94°F | Sunny | 1 to 9 mph WSW | 0% |
| Saturday Night | 55°F | Mostly Clear | 1 to 10 mph NW | 0% |
| Sunday | 90°F | Sunny | 0 to 6 mph NNW | 1% |
| Sunday Night | 53°F | Mostly Clear | 2 to 9 mph NNW | 1% |
| Monday | 88°F | Sunny | 0 to 5 mph NNW | 2% |
| Monday Night | 53°F | Mostly Clear | 2 to 8 mph NNW | 7% |
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 Aug 4, 2026.