Fort Peck, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Peck, a town in Mccone County, Montana.
Tonight
57°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 4am. Mostly cloudy, with a low around 57. Northeast wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast for Fort Peck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 13 mph NE | 20% |
| Saturday | 65°F | Chance Rain Showers | 14 mph ENE | 39% |
| Saturday Night | 55°F | Rain Showers Likely | 14 mph ENE | 62% |
| Sunday | 62°F | Rain Showers Likely | 14 mph E | 58% |
| Sunday Night | 53°F | Mostly Cloudy | 12 mph ESE | 5% |
| Monday | 67°F | Partly Sunny | 12 mph SE | 2% |
| Monday Night | 55°F | Mostly Clear | 10 to 14 mph SE | 0% |
| Tuesday | 72°F | Sunny | 8 mph SE | 0% |
| Tuesday Night | 57°F | Mostly Clear | 7 mph ESE | 1% |
| Wednesday | 73°F | Sunny | 6 mph SSE | 5% |
| Wednesday Night | 57°F | Mostly Clear | 5 mph ESE | 4% |
| Thursday | 73°F | Sunny | 5 to 9 mph SE | 2% |
| Thursday Night | 58°F | Mostly Clear | 9 mph ESE | 3% |
| Friday | 73°F | Mostly Sunny | 7 to 10 mph SE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fort Peck (48.007, -106.455). Updated through the day.
Growing snapshot for Fort Peck
Last spring frost
May 8
First fall frost
Oct 1
Growing season
145 days
Hardiness zone
4a
More local growing data for Fort Peck: nearby ZIP 59223 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Peck Pwr Plt, Mt (11.7 mi from Fort Peck). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.