Ronan, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ronan, a city in Lake County, Montana.
This Afternoon
44°F
Partly Sunny
Partly sunny, with a high near 44. North northwest wind around 1 mph.
7-day forecast for Ronan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 44°F | Partly Sunny | 1 mph NNW | 0% |
| Tonight | 25°F | Mostly Cloudy then Patchy Fog | 1 mph NE | 0% |
| Wednesday | 46°F | Mostly Sunny | 1 mph WNW | 0% |
| Wednesday Night | 26°F | Partly Cloudy | 2 mph SE | 1% |
| Thursday | 47°F | Partly Sunny then Slight Chance Light Rain | 3 mph S | 17% |
| Thursday Night | 28°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph S | 17% |
| Friday | 49°F | Partly Sunny then Slight Chance Light Rain | 6 mph S | 23% |
| Friday Night | 32°F | Slight Chance Light Rain | 3 to 9 mph S | 23% |
| Saturday | 53°F | Partly Sunny | 3 mph S | 3% |
| Saturday Night | 33°F | Partly Cloudy | 1 to 5 mph SE | 12% |
| Sunday | 58°F | Slight Chance Light Rain | 5 mph SSW | 19% |
| Sunday Night | 34°F | Slight Chance Light Rain then Mostly Cloudy | 1 to 5 mph SSW | 19% |
| Monday | 54°F | Partly Sunny then Slight Chance Light Rain | 1 mph SSW | 16% |
| Monday Night | 34°F | Slight Chance Light Rain | 3 mph SSE | 19% |
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 Nov 3, 2026.