Lewisville, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewisville, a city in Jefferson County, Idaho.
Today
51°F
Partly Sunny
Partly sunny. High near 51, with temperatures falling to around 47 in the afternoon. West southwest wind 2 to 6 mph.
7-day forecast for Lewisville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 51°F | Partly Sunny | 2 to 6 mph WSW | 1% |
| Tonight | 28°F | Areas Of Fog | 3 to 7 mph SE | 1% |
| Thursday | 48°F | Patchy Fog then Mostly Cloudy | 5 mph SSE | 3% |
| Thursday Night | 30°F | Areas Of Fog | 2 to 7 mph S | 4% |
| Friday | 46°F | Mostly Sunny | 2 to 6 mph SSW | 0% |
| Friday Night | 27°F | Partly Cloudy | 3 mph E | 0% |
| Saturday | 50°F | Sunny | 3 mph NNW | 0% |
| Saturday Night | 29°F | Mostly Clear | 3 mph NNE | 0% |
| Sunday | 55°F | Mostly Sunny | 3 mph WSW | 0% |
| Sunday Night | 32°F | Partly Cloudy | 3 mph SE | 0% |
| Monday | 54°F | Mostly Sunny | 3 mph N | 0% |
| Monday Night | 33°F | Mostly Cloudy | 2 mph NE | 0% |
| Tuesday | 55°F | Mostly Sunny | 2 mph S | 2% |
| Tuesday Night | 33°F | Partly Cloudy | 3 mph SE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Lewisville (43.696, -112.014). Updated through the day.
Growing snapshot for Lewisville
Last spring frost
May 9
First fall frost
Oct 5
Growing season
148 days
Hardiness zone
5a
More local growing data for Lewisville: nearby ZIP 83431 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rigby, Id (6.1 mi from Lewisville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.