Swan Lake, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swan Lake, a community in Lake County, Montana.
Today
73°F
Sunny
Sunny, with a high near 73. Southwest wind 1 to 5 mph.
7-day forecast for Swan Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 1 to 5 mph SW | 0% |
| Tonight | 48°F | Mostly Clear | 0 to 3 mph E | 0% |
| Wednesday | 80°F | Sunny | 1 to 5 mph SW | 0% |
| Wednesday Night | 51°F | Clear | 2 mph SSE | 0% |
| Thursday | 86°F | Sunny | 0 to 5 mph SW | 0% |
| Thursday Night | 54°F | Mostly Clear | 0 to 3 mph SSE | 0% |
| Friday | 88°F | Sunny | 1 to 7 mph SSE | 0% |
| Friday Night | 56°F | Clear | 3 to 15 mph SSW | 0% |
| Saturday | 85°F | Sunny | 3 to 12 mph SSW | 0% |
| Saturday Night | 55°F | Mostly Clear | 2 to 12 mph SSW | 0% |
| Sunday | 82°F | Sunny | 2 to 6 mph SSW | 0% |
| Sunday Night | 54°F | Mostly Clear | 2 to 6 mph N | 0% |
| Monday | 81°F | Sunny | 2 to 6 mph NW | 1% |
| Monday Night | 53°F | Mostly Clear | 5 mph ENE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Swan Lake (47.936, -113.800). Updated through the day.
Growing snapshot for Swan Lake
Last spring frost
May 17
First fall frost
Sep 19
Growing season
121 days
Hardiness zone
5b
More local growing data for Swan Lake: nearby ZIP 59911 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Bear Dance
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Kerr
Kicking Horse
Kings Point
Lake Mary Ronan
Lindisfarne
Niarada
Pablo
Polson
Ravalli
Rocky Point
Rollins
Ronan
St. Ignatius
Turtle Lake
Climate data from the nearest NOAA station, Swan Lake, Mt (4.2 mi from Swan Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.