Roscoe, MT Weather & Growing Conditions
Tonight
38°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 38, with temperatures rising to around 44 overnight. West northwest wind around 5 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 38°F | Showers And Thunderstorms | 5 mph WNW | 91% |
| Saturday | 43°F | Showers And Thunderstorms | 3 to 9 mph NNW | 94% |
| Saturday Night | 37°F | Rain And Snow Showers Likely | 3 to 7 mph NW | 89% |
| Sunday | 42°F | Rain Showers Likely | 3 to 7 mph WNW | 71% |
| Sunday Night | 38°F | Slight Chance Rain Showers then Mostly Cloudy | 7 mph W | 19% |
| Monday | 51°F | Sunny | 7 mph WNW | 7% |
| Monday Night | 42°F | Mostly Clear | 5 to 12 mph WSW | 1% |
| Tuesday | 55°F | Mostly Sunny | 3 to 9 mph NW | 6% |
| Tuesday Night | 44°F | Partly Cloudy | 5 to 9 mph SE | 7% |
| Wednesday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 6 to 14 mph WNW | 16% |
| Wednesday Night | 44°F | Mostly Clear | 6 to 15 mph W | 4% |
| Thursday | 58°F | Sunny | 6 to 16 mph WSW | 5% |
| Thursday Night | 45°F | Partly Cloudy | 3 to 15 mph S | 3% |
| Friday | 58°F | Mostly Sunny | 8 to 17 mph SW | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Roscoe, MT
Last spring frost
Jun 5
First fall frost
Sep 14
Growing season
99 days
Hardiness zone
5a
Explore more for Roscoe, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Mystic Lake, Mt (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.