Plentywood, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plentywood, a city in Sheridan County, Montana.
Overnight
54°F
Mostly Cloudy
Mostly cloudy, with a low around 54. North northeast wind around 12 mph.
7-day forecast for Plentywood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Mostly Cloudy | 12 mph NNE | 2% |
| Saturday | 69°F | Mostly Cloudy | 12 to 16 mph NE | 0% |
| Saturday Night | 50°F | Mostly Cloudy | 10 to 14 mph E | 9% |
| Sunday | 64°F | Mostly Cloudy | 13 mph ESE | 8% |
| Sunday Night | 47°F | Partly Cloudy | 7 to 10 mph SE | 0% |
| Monday | 71°F | Mostly Sunny | 7 to 18 mph SSE | 2% |
| Monday Night | 51°F | Mostly Clear | 15 mph SSE | 1% |
| Tuesday | 75°F | Mostly Sunny | 13 to 18 mph SSE | 2% |
| Tuesday Night | 54°F | Mostly Clear | 10 to 15 mph SSE | 1% |
| Wednesday | 79°F | Mostly Sunny | 12 mph SSE | 4% |
| Wednesday Night | 55°F | Partly Cloudy | 6 to 9 mph SE | 10% |
| Thursday | 81°F | Mostly Sunny | 6 to 13 mph SSE | 2% |
| Thursday Night | 55°F | Mostly Clear | 10 mph SE | 4% |
| Friday | 79°F | Mostly Sunny | 10 to 20 mph SE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Plentywood (48.776, -104.557). Updated through the day.
Growing snapshot for Plentywood
Last spring frost
May 25
First fall frost
Sep 14
Growing season
111 days
Hardiness zone
3b
More local growing data for Plentywood: nearby ZIP 59254 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Plentywood, Mt (3.7 mi from Plentywood). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.