Lewisville, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewisville, a city in Jefferson County, Idaho.
Today
82°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 82. South wind 5 to 8 mph.
7-day forecast for Lewisville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Patchy Smoke | 5 to 8 mph S | 0% |
| Tonight | 47°F | Areas Of Smoke | 5 to 8 mph SE | 1% |
| Wednesday | 85°F | Areas Of Smoke | 6 mph SSW | 0% |
| Wednesday Night | 50°F | Mostly Clear | 8 mph SE | 0% |
| Thursday | 92°F | Sunny | 3 to 7 mph SSE | 0% |
| Thursday Night | 55°F | Clear | 6 to 9 mph SSE | 0% |
| Friday | 95°F | Sunny | 2 to 6 mph SSE | 0% |
| Friday Night | 57°F | Mostly Clear | 6 to 13 mph SSW | 0% |
| Saturday | 94°F | Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 59°F | Mostly Clear | 5 to 14 mph SSW | 0% |
| Sunday | 93°F | Sunny | 5 to 16 mph S | 0% |
| Sunday Night | 59°F | Mostly Clear | 7 to 21 mph SSW | 1% |
| Monday | 92°F | Sunny | 5 to 14 mph S | 1% |
| Monday Night | 58°F | Mostly Clear | 7 to 17 mph SSW | 1% |
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 Aug 4, 2026.