Royalton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Royalton, a village in Franklin County, Illinois.
Tonight
55°F
Showers And Thunderstorms
Showers and thunderstorms before 2am. Mostly cloudy. Low around 55, with temperatures rising to around 58 overnight. South wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
7-day forecast for Royalton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Showers And Thunderstorms | 6 to 14 mph S | 99% |
| Wednesday | 69°F | Partly Sunny | 6 to 12 mph WSW | 9% |
| Wednesday Night | 43°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 70°F | Sunny | 3 to 9 mph SW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 2 mph W | 6% |
| Friday | 62°F | Partly Sunny | 3 to 10 mph NNW | 2% |
| Friday Night | 38°F | Partly Cloudy | 2 to 7 mph NNW | 1% |
| Saturday | 58°F | Partly Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 64°F | Sunny | 1 to 7 mph W | 5% |
| Sunday Night | 34°F | Mostly Clear | 3 mph NW | 4% |
| Monday | 67°F | Sunny | 1 to 8 mph W | 2% |
| Monday Night | 38°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 70°F | Sunny | 2 to 7 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Royalton (37.878, -89.114). Updated through the day.
Growing snapshot for Royalton
Last spring frost
Apr 6
First fall frost
Oct 22
Growing season
199 days
Hardiness zone
7a
More local growing data for Royalton: nearby ZIP 62983 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Benton
Buckner
Christopher
Ewing
Hanaford
Macedonia
Mulkeytown
North City
Orient
Sesser
Thompsonville
Valier
West City
West Frankfort
Zeigler
Climate data from the nearest NOAA station, Du Quoin 4 Se, Il (7.8 mi from Royalton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.