Glasgow, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glasgow, a city in Valley County, Montana.
Today
48°F
Sunny
Sunny. High near 48, with temperatures falling to around 43 in the afternoon. Southeast wind around 5 mph.
7-day forecast for Glasgow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 48°F | Sunny | 5 mph SE | 0% |
| Tonight | 29°F | Patchy Fog | 2 to 6 mph E | 0% |
| Wednesday | 47°F | Patchy Fog then Mostly Cloudy | 2 to 6 mph NW | 0% |
| Wednesday Night | 28°F | Partly Cloudy | 5 mph N | 0% |
| Thursday | 49°F | Mostly Sunny | 6 mph SE | 0% |
| Thursday Night | 31°F | Partly Cloudy | 6 mph SW | 0% |
| Friday | 53°F | Sunny | 5 to 10 mph WSW | 3% |
| Friday Night | 35°F | Partly Cloudy | 7 to 14 mph WSW | 6% |
| Saturday | 53°F | Sunny | 7 to 20 mph W | 2% |
| Saturday Night | 31°F | Mostly Clear | 7 mph SSW | 0% |
| Sunday | 57°F | Mostly Sunny | 5 to 8 mph S | 0% |
| Sunday Night | 36°F | Partly Cloudy | 9 mph W | 1% |
| Monday | 55°F | Mostly Sunny | 5 to 8 mph WNW | 1% |
| Monday Night | 33°F | Mostly Cloudy | 7 mph S | 2% |
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 Nov 3, 2026.