Joplin, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Joplin, a community in Hill County, Montana.
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. West wind around 5 mph.
7-day forecast for Joplin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 75°F | Sunny | 5 to 8 mph W | 1% |
| Tuesday Night | 50°F | Mostly Clear | 7 mph SW | 1% |
| Wednesday | 82°F | Mostly Sunny | 8 mph W | 0% |
| Wednesday Night | 52°F | Mostly Clear | 5 to 8 mph NNE | 0% |
| Thursday | 88°F | Sunny | 6 to 12 mph NW | 0% |
| Thursday Night | 54°F | Mostly Clear | 10 mph NE | 0% |
| Friday | 93°F | Sunny | 6 to 15 mph ENE | 0% |
| Friday Night | 56°F | Mostly Clear | 8 to 13 mph N | 0% |
| Saturday | 89°F | Sunny | 7 to 12 mph NNW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 7 to 10 mph NNE | 1% |
| Sunday | 85°F | Mostly Sunny | 10 mph N | 1% |
| Sunday Night | 54°F | Partly Cloudy | 12 mph NNE | 9% |
| Monday | 83°F | Mostly Sunny | 10 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Joplin (48.559, -110.773). Updated through the day.
Growing snapshot for Joplin
Last spring frost
May 21
First fall frost
Sep 19
Growing season
119 days
Hardiness zone
4a
More local growing data for Joplin: nearby ZIP 59530 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Joplin, Mt (4.5 mi from Joplin). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.