Grayville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grayville, a city in White County, Illinois.
Tonight
71°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 10pm. Partly cloudy. Low around 71, with temperatures rising to around 73 overnight. East southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Grayville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph ESE | 21% |
| Saturday | 97°F | Sunny | 2 to 6 mph SSW | 12% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph SSW | 10% |
| Sunday | 96°F | Mostly Sunny | 3 to 7 mph W | 13% |
| Sunday Night | 69°F | Mostly Cloudy then Chance Rain Showers | 6 mph NNE | 25% |
| Monday | 86°F | Chance Rain Showers | 5 to 10 mph NNE | 46% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 7 to 13 mph NNE | 46% |
| Tuesday | 76°F | Chance Showers And Thunderstorms | 7 to 13 mph NNE | 37% |
| Tuesday Night | 58°F | Mostly Cloudy | 5 to 13 mph NNE | 10% |
| Wednesday | 76°F | Mostly Sunny | 5 to 9 mph N | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 9 mph NNE | 3% |
| Thursday | 77°F | Mostly Sunny | 3 to 8 mph N | 3% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 8 mph NNE | 3% |
| Friday | 77°F | Mostly Sunny | 3 to 8 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Grayville (38.255, -87.997). Updated through the day.
Growing snapshot for Grayville
Last spring frost
Apr 7
First fall frost
Oct 25
Growing season
201 days
Hardiness zone
7a
More local growing data for Grayville: nearby ZIP 62844 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grayville, Il (3.2 mi from Grayville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.