Brighton, IL Weather & Growing Conditions
Today
96°F
Partly Sunny
Partly sunny, with a high near 96. Southwest wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Partly Sunny | 9 mph SW | 3% |
| Tonight | 71°F | Partly Cloudy | 6 mph SW | 4% |
| Sunday | 90°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 8 mph NW | 38% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 8 to 13 mph N | 68% |
| Monday | 76°F | Showers And Thunderstorms Likely | 9 to 14 mph NE | 68% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 44% |
| Tuesday | 70°F | Slight Chance Rain Showers then Partly Sunny | 14 mph NE | 20% |
| Tuesday Night | 52°F | Mostly Cloudy | 7 to 14 mph N | 8% |
| Wednesday | 73°F | Mostly Sunny | 8 to 12 mph N | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 5 to 9 mph N | 1% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 9 mph NE | 4% |
| Friday | 77°F | Mostly Sunny | 5 to 9 mph NE | 6% |
| Friday Night | 56°F | Partly Cloudy | 5 to 9 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brighton, IL
Last spring frost
Apr 14
First fall frost
Oct 19
Growing season
187 days
Hardiness zone
6b
Explore more for Brighton, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Jerseyville 2 Sw, Il (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.