Twin Bridges, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twin Bridges, a town in Madison County, Montana.
This Afternoon
60°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 60. North wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
7-day forecast for Twin Bridges
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Showers And Thunderstorms Likely | 5 to 9 mph N | 77% |
| Tonight | 40°F | Chance Light Rain then Areas Of Fog | 1 to 10 mph NNE | 16% |
| Sunday | 68°F | Patchy Fog then Mostly Sunny | 2 mph SSW | 2% |
| Sunday Night | 41°F | Mostly Clear | 1 to 5 mph ESE | 0% |
| Monday | 75°F | Sunny | 5 mph SSW | 0% |
| Monday Night | 43°F | Mostly Clear | 3 mph SSE | 0% |
| Tuesday | 76°F | Sunny | 3 mph SSW | 0% |
| Tuesday Night | 44°F | Partly Cloudy | 5 mph ESE | 2% |
| Wednesday | 77°F | Sunny | 5 mph SSW | 2% |
| Wednesday Night | 44°F | Mostly Clear | 6 mph SSE | 1% |
| Thursday | 78°F | Sunny | 6 mph SSW | 1% |
| Thursday Night | 45°F | Mostly Clear | 5 mph SSE | 2% |
| Friday | 78°F | Mostly Sunny | 6 mph SSW | 3% |
| Friday Night | 43°F | Mostly Cloudy | 10 mph S | 11% |
Forecast source: National Weather Service (api.weather.gov) for Twin Bridges (45.543, -112.334). Updated through the day.
Growing snapshot for Twin Bridges
Last spring frost
Jun 8
First fall frost
Sep 2
Growing season
82 days
Hardiness zone
5a
More local growing data for Twin Bridges: nearby ZIP 59754 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Twin Bridges, Mt (2.4 mi from Twin Bridges). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.