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
51°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 51, with temperatures rising to around 57 overnight. North northwest wind around 6 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for South Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Showers And Thunderstorms | 6 mph NNW | 98% |
| Saturday | 58°F | Showers And Thunderstorms | 7 mph NNW | 97% |
| Saturday Night | 47°F | Slight Chance Light Rain then Mostly Cloudy | 2 to 6 mph WSW | 17% |
| Sunday | 68°F | Mostly Sunny | 1 to 6 mph ENE | 0% |
| Sunday Night | 47°F | Mostly Clear | 6 mph S | 0% |
| Monday | 72°F | Sunny | 2 to 8 mph SSW | 0% |
| Monday Night | 48°F | Mostly Clear | 7 mph SW | 0% |
| Tuesday | 74°F | Sunny | 2 to 6 mph SE | 0% |
| Tuesday Night | 50°F | Partly Cloudy | 5 mph SSW | 1% |
| Wednesday | 75°F | Sunny | 2 to 8 mph SSE | 1% |
| Wednesday Night | 51°F | Mostly Clear | 6 mph SSE | 2% |
| Thursday | 75°F | Sunny | 3 to 7 mph SE | 2% |
| Thursday Night | 51°F | Partly Cloudy | 6 mph S | 4% |
| Friday | 74°F | Mostly Sunny | 3 to 8 mph S | 4% |
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
Helena Valley Northwest
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 Sep 19, 2026.