Boyd, MT Weather & Growing Conditions
Tonight
52°F
Showers And Thunderstorms
Showers and thunderstorms before midnight, then patchy fog and showers and thunderstorms likely between midnight and 3am, then patchy fog and showers and thunderstorms. Cloudy. Low around 52, with temperatures rising to around 56 overnight. Northwest wind around 8 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Showers And Thunderstorms | 8 mph NW | 91% |
| Saturday | 58°F | Patchy Fog | 9 to 14 mph NW | 95% |
| Saturday Night | 45°F | Showers And Thunderstorms | 9 to 14 mph NW | 92% |
| Sunday | 62°F | Rain Showers Likely | 7 mph NNW | 64% |
| Sunday Night | 45°F | Slight Chance Rain Showers then Patchy Fog | 1 to 5 mph SE | 15% |
| Monday | 70°F | Sunny | 2 to 10 mph S | 1% |
| Monday Night | 46°F | Mostly Clear | 7 mph S | 0% |
| Tuesday | 76°F | Sunny | 6 mph SSW | 0% |
| Tuesday Night | 49°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 SSW | 2% |
| Thursday | 78°F | Sunny | 6 to 10 mph S | 1% |
| Thursday Night | 51°F | Mostly Clear | 9 mph S | 1% |
| Friday | 79°F | Mostly Sunny | 8 to 12 mph S | 2% |
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 Sep 19, 2026.