Brighton, IL Weather & Growing Conditions
Today
57°F
Patchy Drizzle
Patchy drizzle before 1pm. Mostly cloudy, with a high near 57. West wind 9 to 14 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Patchy Drizzle | 9 to 14 mph W | 12% |
| Tonight | 44°F | Partly Cloudy | 8 mph W | 1% |
| Thursday | 62°F | Mostly Sunny | 8 to 13 mph W | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 5 to 8 mph NW | 2% |
| Friday | 56°F | Partly Sunny | 12 mph N | 1% |
| Friday Night | 34°F | Partly Cloudy | 3 to 9 mph N | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph NW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 60°F | Sunny | 3 to 7 mph NW | 1% |
| Sunday Night | 35°F | Clear | 3 mph W | 0% |
| Monday | 64°F | Sunny | 2 to 7 mph SW | 0% |
| Monday Night | 40°F | Clear | 5 mph SW | 0% |
| Tuesday | 67°F | Sunny | 6 mph W | 1% |
| Tuesday Night | 41°F | Mostly Clear | 3 mph N | 1% |
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 Nov 4, 2026.