Silesia, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Silesia, a community in Carbon County, Montana.
Tonight
28°F
Mostly Clear then Patchy Fog
Patchy fog after 5am. Mostly clear. Low around 28, with temperatures rising to around 30 overnight. Southwest wind around 7 mph.
7-day forecast for Silesia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 28°F | Mostly Clear then Patchy Fog | 7 mph SW | 0% |
| Wednesday | 54°F | Patchy Fog then Sunny | 2 to 7 mph NW | 0% |
| Wednesday Night | 29°F | Patchy Fog | 2 to 10 mph WNW | 0% |
| Thursday | 58°F | Sunny | 3 to 12 mph SW | 3% |
| Thursday Night | 31°F | Partly Cloudy | 5 mph WSW | 3% |
| Friday | 57°F | Sunny | 5 to 14 mph SW | 1% |
| Friday Night | 35°F | Partly Cloudy | 10 to 15 mph SW | 1% |
| Saturday | 60°F | Sunny | 9 to 14 mph SW | 0% |
| Saturday Night | 38°F | Partly Cloudy | 9 to 23 mph SSW | 0% |
| Sunday | 65°F | Mostly Sunny | 16 to 23 mph SSW | 0% |
| Sunday Night | 36°F | Partly Cloudy | 5 to 16 mph SW | 0% |
| Monday | 60°F | Mostly Sunny | 5 mph S | 1% |
| Monday Night | 34°F | Mostly Cloudy | 3 to 7 mph SSE | 1% |
| Tuesday | 63°F | Mostly Sunny | 9 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Silesia (45.549, -108.838). Updated through the day.
Growing snapshot for Silesia
Last spring frost
May 29
First fall frost
Sep 15
Growing season
107 days
Hardiness zone
5a
More local growing data for Silesia: nearby ZIP 59026 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Bearcreek
Belfry
Boyd
Bridger
Edgar
Fox
Fromberg
Joliet
Luther
Montaqua
Red Lodge
Roberts
Rockvale
Roscoe
Climate data from the nearest NOAA station, Joliet, Mt (11 mi from Silesia). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.