Lewistown Heights, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewistown Heights, a community in Fergus County, Montana.
Overnight
30°F
Clear
Clear, with a low around 30. South southeast wind around 1 mph.
7-day forecast for Lewistown Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 30°F | Clear | 1 mph SSE | 0% |
| Wednesday | 49°F | Sunny | 1 mph W | 0% |
| Wednesday Night | 30°F | Mostly Clear | 1 to 6 mph SSE | 0% |
| Thursday | 55°F | Mostly Sunny | 1 to 5 mph W | 3% |
| Thursday Night | 31°F | Partly Cloudy | 1 to 6 mph WSW | 3% |
| Friday | 54°F | Sunny | 6 to 10 mph SW | 0% |
| Friday Night | 36°F | Partly Cloudy | 7 to 10 mph SW | 0% |
| Saturday | 59°F | Sunny | 2 to 7 mph WSW | 0% |
| Saturday Night | 39°F | Partly Cloudy | 2 to 10 mph S | 0% |
| Sunday | 66°F | Mostly Sunny | 7 to 12 mph SW | 1% |
| Sunday Night | 37°F | Mostly Cloudy | 3 to 8 mph WSW | 2% |
| Monday | 57°F | Mostly Sunny | 3 mph WSW | 2% |
| Monday Night | 36°F | Partly Cloudy | 6 mph S | 2% |
| Tuesday | 60°F | Mostly Sunny | 5 to 8 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lewistown Heights (47.078, -109.474). Updated through the day.
Growing snapshot for Lewistown Heights
Last spring frost
May 14
First fall frost
Sep 28
Growing season
135 days
Hardiness zone
4b
More local growing data for Lewistown Heights: nearby ZIP 59457 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Deerfield Colony
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Lewistown
Moore
Roy
Warm Spring Creek
Winifred
Climate data from the nearest NOAA station, Lewistown, Mt (6.7 mi from Lewistown Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.