Brighton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brighton, a village in Jersey County, Illinois.
This Afternoon
96°F
Mostly Cloudy
Mostly cloudy, with a high near 96. Southwest wind around 7 mph.
7-day forecast for Brighton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Mostly Cloudy | 7 mph SW | 1% |
| Tonight | 71°F | Partly Cloudy | 6 mph SW | 2% |
| Sunday | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph W | 30% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 72% |
| Monday | 77°F | Showers And Thunderstorms Likely | 7 to 12 mph NE | 72% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 46% |
| Tuesday | 71°F | Chance Rain Showers then Mostly Cloudy | 9 to 13 mph NE | 28% |
| Tuesday Night | 53°F | Mostly Cloudy | 6 to 13 mph N | 3% |
| Wednesday | 73°F | Partly Sunny | 10 mph N | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 3 to 9 mph N | 0% |
| Thursday | 75°F | Mostly Sunny | 3 to 8 mph N | 0% |
| Thursday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 7 mph NE | 15% |
| Friday | 78°F | Slight Chance Rain Showers | 3 to 8 mph NE | 18% |
| Friday Night | 56°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 8 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Brighton (39.041, -90.140). Updated through the day.
Growing snapshot for Brighton
Last spring frost
Apr 14
First fall frost
Oct 19
Growing season
187 days
Hardiness zone
6b
More local growing data for Brighton: nearby ZIP 62012 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jerseyville 2 Sw, Il (11.2 mi from Brighton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.