South Glastonbury, MT Weather & Growing Conditions
Today
65°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 65. North wind 2 to 13 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Patchy Smoke | 2 to 13 mph N | 6% |
| Tonight | 44°F | Patchy Smoke | 5 to 13 mph E | 4% |
| Wednesday | 73°F | Sunny | 6 to 12 mph WSW | 0% |
| Wednesday Night | 48°F | Mostly Clear | 5 to 10 mph WSW | 0% |
| Thursday | 79°F | Sunny | 8 to 14 mph SW | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 12 mph SSW | 0% |
| Friday | 82°F | Sunny | 7 to 15 mph SW | 0% |
| Friday Night | 56°F | Mostly Clear | 5 to 16 mph SW | 0% |
| Saturday | 81°F | Sunny | 5 to 16 mph SW | 1% |
| Saturday Night | 55°F | Partly Cloudy | 3 to 14 mph SW | 3% |
| Sunday | 79°F | Sunny | 5 to 13 mph SW | 8% |
| Sunday Night | 53°F | Partly Cloudy | 5 to 12 mph NNW | 11% |
| Monday | 78°F | Sunny | 5 to 13 mph W | 6% |
| Monday Night | 52°F | Partly Cloudy | 5 to 12 mph ENE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for South Glastonbury, MT
Last spring frost
May 19
First fall frost
Sep 25
Growing season
125 days
Hardiness zone
5a
Explore more for South Glastonbury, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Livingston 12 S, Mt (16.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.