Ronan, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ronan, a city in Lake County, Montana.
Today
78°F
Patchy Smoke then Sunny
Patchy smoke before noon. Sunny, with a high near 78. North northwest wind 1 to 5 mph.
7-day forecast for Ronan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Smoke then Sunny | 1 to 5 mph NNW | 0% |
| Tonight | 47°F | Mostly Clear | 5 mph E | 0% |
| Wednesday | 85°F | Sunny | 3 mph SSW | 0% |
| Wednesday Night | 50°F | Mostly Clear | 3 mph SE | 0% |
| Thursday | 91°F | Sunny | 3 mph SSW | 0% |
| Thursday Night | 54°F | Clear | 5 mph S | 0% |
| Friday | 93°F | Sunny | 1 to 8 mph SW | 0% |
| Friday Night | 54°F | Clear | 5 to 14 mph SSW | 0% |
| Saturday | 90°F | Sunny | 3 to 10 mph SSW | 0% |
| Saturday Night | 53°F | Mostly Clear | 3 to 12 mph SSW | 0% |
| Sunday | 87°F | Sunny | 1 to 5 mph WSW | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 to 7 mph N | 0% |
| Monday | 85°F | Sunny | 0 to 5 mph N | 0% |
| Monday Night | 51°F | Mostly Clear | 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Ronan (47.529, -114.101). Updated through the day.
Growing snapshot for Ronan
Last spring frost
May 10
First fall frost
Oct 5
Growing season
147 days
Hardiness zone
6a
More local growing data for Ronan: nearby ZIP 59864 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
St. Ignatius
Swan Lake
Turtle Lake
Climate data from the nearest NOAA station, Polson, Mt (10.4 mi from Ronan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.