Winston, MT Weather & Growing Conditions
Tonight
52°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 52, with temperatures rising to around 55 overnight. West northwest wind 7 to 12 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Showers And Thunderstorms | 7 to 12 mph WNW | 98% |
| Saturday | 59°F | Showers And Thunderstorms | 8 to 12 mph WNW | 97% |
| Saturday Night | 48°F | Chance Light Rain | 1 to 7 mph WNW | 38% |
| Sunday | 69°F | Patchy Fog then Mostly Sunny | 1 to 6 mph SSE | 3% |
| Sunday Night | 49°F | Mostly Clear | 3 to 7 mph SSE | 0% |
| Monday | 74°F | Sunny | 3 to 8 mph SSE | 0% |
| Monday Night | 50°F | Mostly Clear | 1 to 5 mph SSW | 0% |
| Tuesday | 75°F | Sunny | 0 to 5 mph SSE | 1% |
| Tuesday Night | 51°F | Partly Cloudy | 3 mph SW | 2% |
| Wednesday | 75°F | Sunny | 2 to 8 mph SSE | 1% |
| Wednesday Night | 50°F | Mostly Clear | 5 mph SSE | 3% |
| Thursday | 77°F | Sunny | 5 to 9 mph SSE | 2% |
| Thursday Night | 51°F | Mostly Clear | 9 mph SSE | 3% |
| Friday | 77°F | Mostly Sunny | 10 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winston, MT
Last spring frost
May 19
First fall frost
Sep 19
Growing season
122 days
Hardiness zone
5a
Explore more for Winston, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Townsend 3Se, Mt (14.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.