Reserve, MT Weather & Growing Conditions
This Afternoon
68°F
Mostly Cloudy
Mostly cloudy, with a high near 68. East northeast wind around 16 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Mostly Cloudy | 16 mph ENE | 0% |
| Tonight | 48°F | Cloudy then Slight Chance Rain Showers | 14 mph E | 18% |
| Sunday | 63°F | Chance Rain Showers then Haze | 13 mph SE | 25% |
| Sunday Night | 48°F | Mostly Cloudy | 6 to 9 mph SE | 2% |
| Monday | 70°F | Mostly Sunny | 6 to 16 mph SSE | 1% |
| Monday Night | 49°F | Mostly Clear | 14 mph SSE | 0% |
| Tuesday | 73°F | Sunny | 13 to 20 mph SSE | 0% |
| Tuesday Night | 52°F | Mostly Clear | 10 to 17 mph SSE | 1% |
| Wednesday | 76°F | Mostly Sunny | 13 mph SSE | 7% |
| Wednesday Night | 53°F | Partly Cloudy | 8 mph SSE | 9% |
| Thursday | 80°F | Mostly Sunny | 5 to 10 mph SSW | 3% |
| Thursday Night | 55°F | Mostly Clear | 9 mph ENE | 5% |
| Friday | 80°F | Mostly Sunny | 10 to 20 mph SE | 3% |
| Friday Night | 53°F | Partly Cloudy | 16 to 21 mph SE | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Reserve, MT
Last spring frost
May 16
First fall frost
Sep 18
Growing season
125 days
Hardiness zone
3b
Explore more for Reserve, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Medicine Lake 3 Se, Mt (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.