Royalton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Royalton, a village in Franklin County, Illinois.
This Afternoon
99°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny. High near 99, with temperatures falling to around 94 in the afternoon. South wind around 1 mph. Chance of precipitation is 20%.
7-day forecast for Royalton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Slight Chance Showers And Thunderstorms | 1 mph S | 24% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SSE | 23% |
| Saturday | 98°F | Sunny | 2 to 7 mph SW | 4% |
| Saturday Night | 72°F | Partly Cloudy | 5 mph SSW | 1% |
| Sunday | 97°F | Sunny | 3 to 8 mph WSW | 8% |
| Sunday Night | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NNE | 21% |
| Monday | 87°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 48% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 5 to 12 mph NNE | 48% |
| Tuesday | 76°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 8 to 13 mph N | 17% |
| Tuesday Night | 57°F | Partly Cloudy | 5 to 13 mph N | 7% |
| Wednesday | 76°F | Mostly Sunny | 6 to 10 mph N | 2% |
| Wednesday Night | 56°F | Partly Cloudy | 2 to 9 mph NNE | 2% |
| Thursday | 76°F | Mostly Sunny | 3 to 9 mph N | 2% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 8 mph NNE | 2% |
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 Sep 19, 2026.