Boyd, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boyd, a community in Carbon County, Montana.
This Afternoon
49°F
Sunny
Sunny. High near 49, with temperatures falling to around 45 in the afternoon. South wind 9 to 14 mph.
7-day forecast for Boyd
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Sunny | 9 to 14 mph S | 0% |
| Tonight | 29°F | Clear | 6 to 9 mph SW | 0% |
| Wednesday | 53°F | Mostly Sunny | 1 to 5 mph NW | 0% |
| Wednesday Night | 30°F | Partly Cloudy | 1 to 14 mph SW | 0% |
| Thursday | 55°F | Sunny | 2 to 14 mph SW | 2% |
| Thursday Night | 31°F | Partly Cloudy | 2 to 6 mph WSW | 4% |
| Friday | 55°F | Sunny | 5 to 12 mph SSW | 3% |
| Friday Night | 34°F | Partly Cloudy | 13 mph SSW | 3% |
| Saturday | 58°F | Sunny | 12 mph SSW | 0% |
| Saturday Night | 37°F | Partly Cloudy | 10 to 21 mph S | 0% |
| Sunday | 63°F | Mostly Sunny | 13 to 23 mph S | 0% |
| Sunday Night | 36°F | Partly Cloudy | 3 to 13 mph SW | 0% |
| Monday | 58°F | Mostly Sunny | 5 mph S | 1% |
| Monday Night | 35°F | Partly Cloudy | 6 mph SSW | 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
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Edgar
Fox
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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 Nov 4, 2026.