Seaton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seaton, a village in Mercer County, Illinois.
Tonight
51°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5am. Mostly cloudy. Low around 51, with temperatures rising to around 53 overnight. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
7-day forecast for Seaton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Showers And Thunderstorms Likely | 10 to 15 mph S | 66% |
| Wednesday | 56°F | Slight Chance Rain Showers | 15 mph SW | 21% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 to 15 mph SW | 9% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 27% |
| Thursday Night | 41°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 31% |
| Friday | 53°F | Mostly Cloudy | 5 to 10 mph N | 11% |
| Friday Night | 34°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 53°F | Partly Sunny | 0 to 5 mph NW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 3% |
| Sunday | 59°F | Sunny | 5 to 10 mph W | 10% |
| Sunday Night | 36°F | Mostly Clear | 0 to 5 mph W | 2% |
| Monday | 64°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Seaton (41.102, -90.799). Updated through the day.
Growing snapshot for Seaton
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
5b
More local growing data for Seaton: nearby ZIP 61476 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Aledo, Il (8.7 mi from Seaton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.