Swan Lake, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swan Lake, a community in Lake County, Montana.
Overnight
29°F
Mostly Cloudy
Mostly cloudy, with a low around 29. Wind around 0 mph.
7-day forecast for Swan Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 45°F | Mostly Sunny | 1 mph S | 0% |
| Wednesday Night | 30°F | Mostly Clear | 1 mph SSE | 3% |
| Thursday | 40°F | Chance Rain And Snow | 0 to 5 mph SSW | 40% |
| Thursday Night | 32°F | Chance Rain And Snow then Mostly Cloudy | 5 mph SSW | 37% |
| Friday | 43°F | Partly Sunny then Chance Light Rain | 2 to 7 mph SSW | 26% |
| Friday Night | 35°F | Chance Light Rain | 5 to 10 mph SSW | 26% |
| Saturday | 50°F | Partly Sunny | 1 to 5 mph SW | 6% |
| Saturday Night | 37°F | Partly Cloudy then Chance Light Rain | 1 to 6 mph S | 40% |
| Sunday | 51°F | Chance Light Rain | 6 to 13 mph SSW | 42% |
| Sunday Night | 35°F | Chance Rain And Snow | 3 to 9 mph SW | 42% |
| Monday | 48°F | Partly Sunny then Chance Light Rain | 3 mph WSW | 25% |
| Monday Night | 36°F | Chance Rain And Snow | 3 mph SW | 25% |
| Tuesday | 50°F | Slight Chance Light Rain | 5 mph SW | 24% |
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
Big Arm
Charlo
Dayton
Elmo
Finley Point
Jette
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 Nov 4, 2026.