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
63°F
Light Rain Likely
Rain likely and patchy fog. Cloudy. High near 63, with temperatures falling to around 60 in the afternoon. Northeast wind 2 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Lewistown Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Light Rain Likely | 2 to 7 mph NE | 61% |
| Tonight | 45°F | Light Rain Likely | 1 to 6 mph E | 63% |
| Sunday | 66°F | Areas Of Fog | 3 mph ESE | 46% |
| Sunday Night | 43°F | Partly Cloudy | 5 to 8 mph SE | 2% |
| Monday | 76°F | Sunny | 5 mph S | 0% |
| Monday Night | 47°F | Mostly Clear | 3 to 9 mph S | 0% |
| Tuesday | 79°F | Sunny | 3 mph WSW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 2 to 7 mph SE | 2% |
| Wednesday | 80°F | Sunny | 2 mph SW | 1% |
| Wednesday Night | 50°F | Mostly Clear | 2 to 8 mph S | 6% |
| Thursday | 81°F | Sunny | 5 mph SSW | 3% |
| Thursday Night | 50°F | Mostly Clear | 5 to 9 mph SE | 3% |
| Friday | 80°F | Mostly Sunny | 6 to 9 mph S | 3% |
| Friday Night | 47°F | Slight Chance Light Rain | 6 to 9 mph S | 17% |
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
Ayers Ranch Colony
Brooks
Coffee Creek
Deerfield Colony
Denton
Fords Creek Colony
Grass Range
Hilger
King Ranch Colony
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 Sep 19, 2026.