Silesia, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Silesia, a community in Carbon County, Montana.
Tonight
47°F
Rain Showers
Rain showers and patchy fog. Cloudy, with a low around 47. Northwest wind 10 to 14 mph. Chance of precipitation is 90%.
7-day forecast for Silesia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Rain Showers | 10 to 14 mph NW | 90% |
| Sunday | 63°F | Rain Showers Likely | 6 to 9 mph NW | 68% |
| Sunday Night | 46°F | Patchy Fog | 5 mph ESE | 13% |
| Monday | 73°F | Patchy Fog then Mostly Sunny | 2 to 6 mph S | 0% |
| Monday Night | 46°F | Mostly Clear | 6 mph SSE | 0% |
| Tuesday | 79°F | Sunny | 6 mph SSW | 0% |
| Tuesday Night | 50°F | Partly Cloudy | 6 mph SSE | 10% |
| Wednesday | 79°F | Mostly Sunny | 7 mph SSW | 6% |
| Wednesday Night | 51°F | Mostly Clear | 5 to 10 mph S | 3% |
| Thursday | 81°F | Sunny | 10 to 16 mph SSW | 1% |
| Thursday Night | 51°F | Mostly Clear | 7 to 10 mph SSE | 3% |
| Friday | 81°F | Mostly Sunny | 10 to 14 mph S | 1% |
| Friday Night | 50°F | Partly Cloudy | 12 mph SSW | 9% |
| Saturday | 74°F | Partly Sunny then Slight Chance Rain Showers | 13 mph S | 16% |
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 Sep 20, 2026.