Ronan, MT Weather & Growing Conditions
Today
72°F
Areas Of Fog then Mostly Sunny
Areas of fog before 9am. Mostly sunny, with a high near 72. Northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Areas Of Fog then Mostly Sunny | 2 mph NW | 8% |
| Tonight | 45°F | Partly Cloudy | 1 to 5 mph SE | 3% |
| Sunday | 75°F | Patchy Fog then Sunny | 2 mph SSW | 0% |
| Sunday Night | 45°F | Clear | 3 mph ESE | 0% |
| Monday | 78°F | Sunny | 2 mph WNW | 0% |
| Monday Night | 46°F | Mostly Clear | 3 mph SSE | 0% |
| Tuesday | 77°F | Sunny | 2 mph W | 0% |
| Tuesday Night | 46°F | Mostly Clear | 3 mph E | 1% |
| Wednesday | 76°F | Sunny | 3 mph SSE | 1% |
| Wednesday Night | 46°F | Partly Cloudy | 1 to 5 mph SSE | 3% |
| Thursday | 75°F | Sunny | 2 mph SW | 1% |
| Thursday Night | 46°F | Partly Cloudy | 3 mph E | 9% |
| Friday | 73°F | Mostly Sunny | 3 mph SW | 10% |
| Friday Night | 44°F | Slight Chance Light Rain | 6 mph ESE | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ronan, MT
Last spring frost
May 10
First fall frost
Oct 5
Growing season
147 days
Hardiness zone
6a
Explore more for Ronan, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Polson, Mt (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.