Joliet, MT Weather & Growing Conditions
Today
75°F
Sunny then Patchy Smoke
Patchy smoke after 3pm. Sunny, with a high near 75. North northeast wind 2 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Sunny then Patchy Smoke | 2 to 10 mph NNE | 0% |
| Tonight | 48°F | Patchy Smoke | 3 to 10 mph N | 2% |
| Wednesday | 86°F | Sunny | 2 to 6 mph W | 0% |
| Wednesday Night | 52°F | Mostly Clear | 6 mph NW | 0% |
| Thursday | 94°F | Sunny | 6 mph WSW | 0% |
| Thursday Night | 56°F | Mostly Clear | 6 to 10 mph NW | 0% |
| Friday | 99°F | Sunny | 5 mph SW | 0% |
| Friday Night | 60°F | Mostly Clear | 10 mph NW | 0% |
| Saturday | 95°F | Sunny | 5 to 9 mph NNW | 0% |
| Saturday Night | 60°F | Mostly Clear | 7 to 12 mph N | 0% |
| Sunday | 93°F | Sunny | 5 to 8 mph N | 2% |
| Sunday Night | 60°F | Partly Cloudy | 10 mph NNE | 7% |
| Monday | 90°F | Sunny | 6 to 9 mph N | 2% |
| Monday Night | 59°F | Partly Cloudy | 9 to 13 mph NNE | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Joliet, MT
Last spring frost
May 29
First fall frost
Sep 15
Growing season
107 days
Hardiness zone
5a
Explore more for Joliet, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Joliet, Mt (2.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.