Circle, MT Weather & Growing Conditions
Today
72°F
Sunny
Sunny, with a high near 72. West wind 6 to 14 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Sunny | 6 to 14 mph W | 0% |
| Tonight | 50°F | Mostly Clear | 1 to 8 mph SW | 1% |
| Wednesday | 83°F | Partly Sunny | 9 mph WSW | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 1 to 8 mph WSW | 0% |
| Thursday | 89°F | Sunny | 2 to 7 mph W | 0% |
| Thursday Night | 57°F | Mostly Clear | 3 to 9 mph N | 0% |
| Friday | 90°F | Sunny | 2 to 7 mph ESE | 0% |
| Friday Night | 59°F | Mostly Clear | 8 mph NE | 0% |
| Saturday | 90°F | Sunny | 5 to 9 mph NE | 0% |
| Saturday Night | 59°F | Mostly Clear | 9 mph NE | 2% |
| Sunday | 90°F | Mostly Sunny | 7 to 12 mph ENE | 1% |
| Sunday Night | 59°F | Partly Cloudy | 10 mph NE | 10% |
| Monday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 to 12 mph ENE | 16% |
| Monday Night | 58°F | Partly Cloudy then Chance Showers And Thunderstorms | 12 mph E | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Circle, MT
Last spring frost
May 17
First fall frost
Sep 22
Growing season
126 days
Hardiness zone
4a
Explore more for Circle, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Circle, Mt (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.