South Hills, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Hills, a community in Lewis And Clark County, Montana.
Overnight
43°F
Mostly Clear
Mostly clear, with a low around 43. Northwest wind around 1 mph.
7-day forecast for South Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 43°F | Mostly Clear | 1 mph NW | 0% |
| Tuesday | 75°F | Patchy Smoke | 0 to 7 mph NNE | 0% |
| Tuesday Night | 50°F | Mostly Clear | 5 mph W | 1% |
| Wednesday | 84°F | Sunny | 2 to 6 mph NW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 6 mph WSW | 0% |
| Thursday | 91°F | Sunny | 1 to 10 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 5 to 9 mph W | 0% |
| Friday | 95°F | Sunny | 1 to 15 mph WSW | 1% |
| Friday Night | 61°F | Mostly Clear | 8 to 14 mph W | 0% |
| Saturday | 91°F | Sunny | 1 to 12 mph WNW | 0% |
| Saturday Night | 61°F | Mostly Clear | 5 to 9 mph WNW | 0% |
| Sunday | 89°F | Sunny | 1 to 8 mph NW | 1% |
| Sunday Night | 59°F | Mostly Clear | 5 to 9 mph WNW | 1% |
| Monday | 86°F | Sunny | 2 to 8 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for South Hills (46.556, -111.998). Updated through the day.
Growing snapshot for South Hills
Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
5a
More local growing data for South Hills: nearby ZIP 59623 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Canyon Creek
Craig
East Helena
Helena
Helena Valley Northeast
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Helena Valley Southeast
Helena Valley West Central
Helena West Side
Lincoln
Marysville
Milford Colony
Montana City
Rimini
Spokane Creek
Unionville
Wolf Creek
York
Climate data from the nearest NOAA station, Helena Rgnl Ap, Mt (3.8 mi from South Hills). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.