Lewisville, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewisville, a city in Jefferson County, Idaho.
This Afternoon
70°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 70, with temperatures falling to around 66 in the afternoon. South southwest wind around 7 mph. Chance of precipitation is 90%.
7-day forecast for Lewisville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms | 7 mph SSW | 88% |
| Tonight | 44°F | Showers And Thunderstorms Likely | 7 mph S | 74% |
| Saturday | 63°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 7 mph SSW | 57% |
| Saturday Night | 43°F | Mostly Cloudy | 3 mph S | 11% |
| Sunday | 68°F | Mostly Sunny | 3 mph SW | 0% |
| Sunday Night | 42°F | Mostly Clear | 2 to 6 mph E | 0% |
| Monday | 73°F | Sunny | 2 to 6 mph NNE | 0% |
| Monday Night | 44°F | Mostly Clear | 2 to 6 mph ENE | 0% |
| Tuesday | 76°F | Mostly Sunny | 6 mph NNW | 0% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph SE | 6% |
| Wednesday | 76°F | Sunny | 5 mph ESE | 2% |
| Wednesday Night | 44°F | Mostly Clear | 5 mph ESE | 2% |
| Thursday | 78°F | Sunny | 6 mph NNE | 2% |
| Thursday Night | 46°F | Partly Cloudy | 2 to 6 mph ENE | 0% |
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 Sep 19, 2026.