McAllister, MT Weather & Growing Conditions
This Afternoon
48°F
Mostly Sunny
Mostly sunny. High near 48, with temperatures falling to around 42 in the afternoon. East wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Mostly Sunny | 0 to 3 mph E | 0% |
| Tonight | 28°F | Mostly Cloudy | 0 to 3 mph WSW | 0% |
| Wednesday | 46°F | Mostly Sunny | 1 mph N | 0% |
| Wednesday Night | 27°F | Mostly Clear | 0 to 8 mph WNW | 0% |
| Thursday | 46°F | Mostly Sunny | 3 to 12 mph SSW | 13% |
| Thursday Night | 27°F | Partly Cloudy | 6 mph SSW | 13% |
| Friday | 46°F | Mostly Sunny | 6 to 15 mph SSW | 7% |
| Friday Night | 29°F | Mostly Cloudy | 8 to 15 mph SSW | 7% |
| Saturday | 49°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 5 to 13 mph SSW | 0% |
| Sunday | 55°F | Mostly Sunny | 10 to 17 mph SSW | 2% |
| Sunday Night | 34°F | Mostly Cloudy | 6 to 13 mph SSW | 2% |
| Monday | 53°F | Partly Sunny | 6 mph SSW | 3% |
| Monday Night | 35°F | Mostly Cloudy | 3 to 10 mph SSW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McAllister, MT
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
162 days
Hardiness zone
5a
Explore more for McAllister, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Norris Madison Pwr House, Mt (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.