Joplin, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Joplin, a community in Hill County, Montana.
Overnight
48°F
Mostly Cloudy
Mostly cloudy, with a low around 48. Northeast wind around 9 mph.
7-day forecast for Joplin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Cloudy | 9 mph NE | 0% |
| Saturday | 68°F | Partly Sunny | 9 mph ENE | 0% |
| Saturday Night | 45°F | Mostly Cloudy | 5 to 8 mph ESE | 1% |
| Sunday | 71°F | Sunny | 6 to 9 mph SSE | 0% |
| Sunday Night | 46°F | Mostly Clear | 10 mph SSE | 0% |
| Monday | 76°F | Sunny | 7 to 10 mph SSE | 0% |
| Monday Night | 47°F | Mostly Clear | 5 to 8 mph S | 0% |
| Tuesday | 75°F | Sunny | 6 mph WSW | 0% |
| Tuesday Night | 48°F | Mostly Clear | 6 mph SE | 0% |
| Wednesday | 76°F | Sunny | 3 to 8 mph WSW | 1% |
| Wednesday Night | 49°F | Mostly Clear | 7 mph S | 3% |
| Thursday | 75°F | Sunny | 7 mph SW | 2% |
| Thursday Night | 49°F | Partly Cloudy | 9 mph ESE | 10% |
| Friday | 72°F | Mostly Sunny | 6 to 9 mph SSE | 10% |
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 Sep 19, 2026.