Twin Bridges, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twin Bridges, a town in Madison County, Montana.
Tonight
26°F
Patchy Fog
Patchy fog before 5am. Mostly cloudy, with a low around 26. South southwest wind around 2 mph.
7-day forecast for Twin Bridges
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 26°F | Patchy Fog | 2 mph SSW | 0% |
| Wednesday | 48°F | Mostly Sunny | 1 mph WNW | 0% |
| Wednesday Night | 25°F | Patchy Fog | 1 to 6 mph SSE | 0% |
| Thursday | 47°F | Patchy Fog then Mostly Sunny | 6 mph SSW | 10% |
| Thursday Night | 25°F | Partly Cloudy | 3 to 7 mph SSW | 10% |
| Friday | 48°F | Mostly Sunny | 7 mph SSW | 4% |
| Friday Night | 27°F | Partly Cloudy | 7 to 13 mph SSW | 4% |
| Saturday | 51°F | Mostly Sunny | 2 to 9 mph SSW | 0% |
| Saturday Night | 28°F | Partly Cloudy | 2 to 13 mph S | 0% |
| Sunday | 55°F | Mostly Sunny | 3 to 13 mph SSW | 1% |
| Sunday Night | 30°F | Mostly Cloudy | 6 mph SSW | 0% |
| Monday | 53°F | Partly Sunny | 1 to 6 mph SSW | 1% |
| Monday Night | 31°F | Mostly Cloudy | 2 to 8 mph SSW | 1% |
| Tuesday | 55°F | Mostly Sunny | 5 to 8 mph SSW | 4% |
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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Virginia City
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 Nov 4, 2026.