Charlo, MT Weather & Growing Conditions
Overnight
23°F
Mostly Cloudy
Mostly cloudy, with a low around 23. East northeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 23°F | Mostly Cloudy | 1 mph ENE | 0% |
| Wednesday | 46°F | Mostly Sunny | 2 mph NE | 0% |
| Wednesday Night | 24°F | Partly Cloudy | 2 mph SSE | 1% |
| Thursday | 45°F | Partly Sunny | 1 to 5 mph SSW | 12% |
| Thursday Night | 25°F | Partly Cloudy | 6 mph S | 6% |
| Friday | 52°F | Partly Sunny | 6 mph S | 6% |
| Friday Night | 31°F | Mostly Cloudy | 5 to 9 mph S | 6% |
| Saturday | 57°F | Partly Sunny | 1 to 5 mph SSE | 2% |
| Saturday Night | 32°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 8 mph SSE | 20% |
| Sunday | 59°F | Slight Chance Light Rain | 9 mph SSW | 20% |
| Sunday Night | 31°F | Mostly Cloudy | 2 to 7 mph SSW | 13% |
| Monday | 53°F | Partly Sunny then Slight Chance Light Rain | 2 mph SSW | 17% |
| Monday Night | 32°F | Slight Chance Light Rain | 3 mph SE | 17% |
| Tuesday | 56°F | Slight Chance Light Rain | 5 mph S | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Charlo, MT
Last spring frost
May 12
First fall frost
Oct 2
Growing season
142 days
Hardiness zone
6a
Explore more for Charlo, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Saint Ignatius, Mt (8.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.