Boyd, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boyd, a community in Carbon County, Montana.
This Afternoon
77°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 74 in the afternoon. West wind around 9 mph. Chance of precipitation is 50%.
7-day forecast for Boyd
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Chance Showers And Thunderstorms | 9 mph W | 54% |
| Tonight | 52°F | Showers And Thunderstorms | 10 mph NNW | 90% |
| Saturday | 59°F | Showers And Thunderstorms | 9 to 15 mph NNW | 98% |
| Saturday Night | 48°F | Showers And Thunderstorms | 10 to 15 mph NW | 89% |
| Sunday | 62°F | Rain Showers Likely | 8 mph NW | 64% |
| Sunday Night | 46°F | Mostly Cloudy | 2 to 6 mph SSW | 11% |
| Monday | 71°F | Mostly Sunny | 2 to 10 mph S | 1% |
| Monday Night | 48°F | Mostly Clear | 7 mph S | 1% |
| Tuesday | 76°F | Sunny | 5 mph SSW | 1% |
| Tuesday Night | 50°F | Partly Cloudy | 5 mph S | 4% |
| Wednesday | 77°F | Sunny | 6 mph S | 5% |
| Wednesday Night | 50°F | Mostly Clear | 5 to 8 mph S | 2% |
| Thursday | 78°F | Sunny | 7 to 12 mph S | 1% |
| Thursday Night | 51°F | Mostly Clear | 9 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Boyd (45.454, -109.070). Updated through the day.
Growing snapshot for Boyd
Last spring frost
May 29
First fall frost
Sep 15
Growing season
107 days
Hardiness zone
5a
More local growing data for Boyd: nearby ZIP 59013 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Bearcreek
Belfry
Bridger
Edgar
Fox
Fromberg
Joliet
Luther
Montaqua
Red Lodge
Roberts
Rockvale
Roscoe
Silesia
Climate data from the nearest NOAA station, Joliet, Mt (3.5 mi from Boyd). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.