Boyd, MT Weather & Growing Conditions
Overnight
29°F
Mostly Clear
Mostly clear. Low around 29, with temperatures rising to around 31 overnight. West southwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Mostly Clear | 7 mph WSW | 0% |
| Wednesday | 54°F | Sunny | 1 to 5 mph NW | 0% |
| Wednesday Night | 30°F | Mostly Clear | 1 to 13 mph W | 0% |
| Thursday | 56°F | Mostly Sunny then Slight Chance Rain Showers | 2 to 13 mph SSW | 15% |
| Thursday Night | 32°F | Slight Chance Rain Showers | 2 to 6 mph W | 15% |
| Friday | 55°F | Sunny | 5 to 10 mph SSW | 0% |
| Friday Night | 34°F | Partly Cloudy | 9 to 14 mph SSW | 0% |
| Saturday | 58°F | Sunny | 8 to 12 mph S | 0% |
| Saturday Night | 37°F | Mostly Clear | 9 to 20 mph S | 0% |
| Sunday | 63°F | Mostly Sunny | 10 to 21 mph S | 0% |
| Sunday Night | 36°F | Partly Cloudy | 3 to 10 mph SW | 0% |
| Monday | 58°F | Mostly Sunny | 5 mph SW | 1% |
| Monday Night | 35°F | Mostly Cloudy | 6 mph SSW | 1% |
| Tuesday | 60°F | Mostly Sunny | 6 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Boyd, MT
Last spring frost
May 29
First fall frost
Sep 15
Growing season
107 days
Hardiness zone
5a
Explore more for Boyd, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Joliet, Mt (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.