Glasgow, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glasgow, a city in Valley County, Montana.
Overnight
44°F
Partly Cloudy
Partly cloudy, with a low around 44. West northwest wind around 7 mph.
7-day forecast for Glasgow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Partly Cloudy | 7 mph WNW | 0% |
| Tuesday | 76°F | Sunny | 7 to 14 mph WNW | 0% |
| Tuesday Night | 51°F | Mostly Clear | 3 to 10 mph SW | 1% |
| Wednesday | 86°F | Partly Sunny | 5 to 14 mph WSW | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 3 to 13 mph NNW | 0% |
| Thursday | 90°F | Sunny | 2 to 10 mph WNW | 0% |
| Thursday Night | 57°F | Mostly Clear | 7 to 12 mph NNE | 0% |
| Friday | 90°F | Sunny | 8 mph ESE | 0% |
| Friday Night | 58°F | Mostly Clear | 9 to 14 mph ENE | 0% |
| Saturday | 90°F | Sunny | 12 mph ENE | 0% |
| Saturday Night | 60°F | Partly Cloudy | 9 to 15 mph NE | 2% |
| Sunday | 88°F | Mostly Sunny | 14 mph ENE | 2% |
| Sunday Night | 59°F | Partly Cloudy | 13 to 16 mph NE | 13% |
| Monday | 85°F | Chance Showers And Thunderstorms | 14 mph ENE | 25% |
Forecast source: National Weather Service (api.weather.gov) for Glasgow (48.199, -106.632). Updated through the day.
Growing snapshot for Glasgow
Last spring frost
May 3
First fall frost
Oct 1
Growing season
151 days
Hardiness zone
4a
More local growing data for Glasgow: nearby ZIP 59230 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Glasgow #2, Mt (8.5 mi from Glasgow). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.