Louisville, IL Weather & Growing Conditions
Overnight
70°F
Mostly Clear
Mostly clear, with a low around 70. Southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Mostly Clear | 3 mph SE | 5% |
| Saturday | 96°F | Mostly Sunny | 3 to 8 mph SW | 10% |
| Saturday Night | 71°F | Partly Cloudy | 5 mph SSW | 4% |
| Sunday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph WNW | 19% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 6 to 9 mph NNE | 51% |
| Monday | 78°F | Showers And Thunderstorms Likely | 10 mph NE | 64% |
| Monday Night | 58°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 7 to 12 mph NE | 64% |
| Tuesday | 72°F | Chance Showers And Thunderstorms | 12 mph NNE | 26% |
| Tuesday Night | 54°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 12 mph NNE | 20% |
| Wednesday | 74°F | Mostly Sunny | 6 to 9 mph N | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 8 mph N | 3% |
| Thursday | 75°F | Mostly Sunny | 5 to 8 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 7 mph NNE | 3% |
| Friday | 77°F | Mostly Sunny | 5 to 8 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Louisville, IL
Last spring frost
Apr 10
First fall frost
Oct 23
Growing season
196 days
Hardiness zone
6b
Explore more for Louisville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Flora 5 Nw, Il (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.