Boyd, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boyd, a community in Carbon County, Montana.
Today
76°F
Sunny then Patchy Smoke
Patchy smoke after 3pm. Sunny. High near 76, with temperatures falling to around 74 in the afternoon. North northeast wind 2 to 9 mph.
7-day forecast for Boyd
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Sunny then Patchy Smoke | 2 to 9 mph NNE | 0% |
| Tonight | 48°F | Patchy Smoke | 3 to 10 mph N | 2% |
| Wednesday | 86°F | Sunny | 5 mph SSW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 6 mph NW | 0% |
| Thursday | 95°F | Sunny | 5 mph WSW | 0% |
| Thursday Night | 57°F | Mostly Clear | 6 to 9 mph NNW | 0% |
| Friday | 99°F | Sunny | 5 mph SW | 0% |
| Friday Night | 60°F | Mostly Clear | 9 mph NNW | 0% |
| Saturday | 96°F | Sunny | 3 to 9 mph WNW | 0% |
| Saturday Night | 60°F | Partly Cloudy | 6 to 10 mph N | 0% |
| Sunday | 94°F | Sunny | 7 mph N | 2% |
| Sunday Night | 60°F | Partly Cloudy | 9 mph N | 8% |
| Monday | 91°F | Sunny | 6 to 9 mph N | 2% |
| Monday Night | 59°F | Partly Cloudy | 8 to 12 mph N | 13% |
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 Aug 4, 2026.