Charlo, MT Weather & Growing Conditions
Overnight
40°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 40. North northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Patchy Smoke | 2 mph NNE | 0% |
| Tuesday | 80°F | Patchy Smoke | 1 to 7 mph N | 0% |
| Tuesday Night | 45°F | Mostly Clear | 6 mph E | 0% |
| Wednesday | 85°F | Sunny | 0 to 3 mph WSW | 0% |
| Wednesday Night | 48°F | Mostly Clear | 5 mph ESE | 0% |
| Thursday | 92°F | Sunny | 3 mph SSW | 0% |
| Thursday Night | 51°F | Clear | 3 to 8 mph SSW | 0% |
| Friday | 93°F | Sunny | 0 to 12 mph SW | 0% |
| Friday Night | 51°F | Clear | 6 to 17 mph SW | 0% |
| Saturday | 91°F | Sunny | 5 to 14 mph SW | 0% |
| Saturday Night | 50°F | Mostly Clear | 3 to 14 mph SW | 0% |
| Sunday | 88°F | Sunny | 1 to 6 mph SSW | 0% |
| Sunday Night | 50°F | Mostly Clear | 2 to 9 mph NNW | 0% |
| Monday | 86°F | Sunny | 0 to 5 mph NNW | 0% |
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 Aug 4, 2026.