Lewistown Heights, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewistown Heights, a community in Fergus County, Montana.
Today
73°F
Sunny
Sunny, with a high near 73. Northwest wind 1 to 5 mph.
7-day forecast for Lewistown Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 1 to 5 mph NW | 0% |
| Tonight | 46°F | Partly Cloudy | 5 mph E | 1% |
| Wednesday | 82°F | Sunny | 3 to 9 mph W | 0% |
| Wednesday Night | 50°F | Mostly Clear | 3 to 8 mph SSE | 0% |
| Thursday | 88°F | Sunny | 3 to 10 mph W | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 10 mph ESE | 0% |
| Friday | 93°F | Sunny | 2 to 13 mph WSW | 1% |
| Friday Night | 56°F | Mostly Clear | 5 to 10 mph NW | 1% |
| Saturday | 91°F | Sunny | 5 to 10 mph WNW | 0% |
| Saturday Night | 56°F | Mostly Clear | 5 to 8 mph E | 2% |
| Sunday | 87°F | Sunny | 3 to 9 mph NW | 1% |
| Sunday Night | 55°F | Partly Cloudy | 5 to 9 mph E | 8% |
| Monday | 85°F | Sunny | 2 to 10 mph ENE | 13% |
| Monday Night | 54°F | Slight Chance Rain Showers | 5 to 10 mph E | 22% |
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
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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 Aug 4, 2026.