Sylvanite, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sylvanite, a community in Lincoln County, Montana.
This Afternoon
74°F
Mostly Sunny
Mostly sunny, with a high near 74. West southwest wind around 2 mph.
7-day forecast for Sylvanite
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 2 mph WSW | 0% |
| Tonight | 49°F | Mostly Clear | 2 mph NW | 0% |
| Saturday | 75°F | Sunny | 2 mph WSW | 0% |
| Saturday Night | 50°F | Partly Cloudy | 1 mph SE | 0% |
| Sunday | 75°F | Sunny | 2 mph SSE | 0% |
| Sunday Night | 51°F | Mostly Clear | 2 mph SSE | 0% |
| Monday | 75°F | Sunny | 3 mph SSE | 0% |
| Monday Night | 51°F | Partly Cloudy | 5 mph SSE | 0% |
| Tuesday | 73°F | Mostly Sunny | 5 mph SE | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 3 mph SSW | 1% |
| Wednesday | 69°F | Mostly Sunny | 2 to 7 mph S | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 5 mph SSE | 0% |
| Thursday | 73°F | Mostly Sunny | 3 mph SE | 1% |
| Thursday Night | 51°F | Partly Cloudy | 2 to 6 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Sylvanite (48.706, -115.874). Updated through the day.
Growing snapshot for Sylvanite
Last spring frost
May 14
First fall frost
Sep 25
Growing season
132 days
Hardiness zone
6a
More local growing data for Sylvanite: nearby ZIP 59935 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Eureka
Fortine
Happys Inn
Indian Springs
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Rexford
Stryker
Trego
Troy
West Kootenai
White Haven
Yaak
Climate data from the nearest NOAA station, Troy, Mt (12.1 mi from Sylvanite). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.