Brownstown, IL Weather & Growing Conditions
Today
95°F
Partly Sunny
Partly sunny, with a high near 95. Southwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Partly Sunny | 7 mph SW | 12% |
| Tonight | 71°F | Partly Cloudy | 5 mph S | 5% |
| Sunday | 91°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 7 mph NW | 33% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 54% |
| Monday | 76°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 72% |
| Monday Night | 56°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 7 to 13 mph NE | 72% |
| Tuesday | 70°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 12 mph NE | 23% |
| Tuesday Night | 53°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph N | 15% |
| Wednesday | 73°F | Mostly Sunny | 6 to 9 mph N | 5% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 9 mph N | 3% |
| Thursday | 75°F | Mostly Sunny | 3 to 8 mph N | 2% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 7 mph NE | 2% |
| Friday | 77°F | Mostly Sunny | 3 to 8 mph NE | 3% |
| Friday Night | 55°F | Partly Cloudy | 2 to 7 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brownstown, IL
Last spring frost
Apr 3
First fall frost
Oct 24
Growing season
202 days
Hardiness zone
6b
Explore more for Brownstown, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Brownstown 4 Sw, Il (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.