Grayville, IL Weather & Growing Conditions
Overnight
71°F
Mostly Clear
Mostly clear. Low around 71, with temperatures rising to around 73 overnight. South southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Clear | 2 mph SSE | 3% |
| Saturday | 98°F | Sunny | 2 to 7 mph SW | 8% |
| Saturday Night | 72°F | Partly Cloudy | 5 mph SSW | 5% |
| Sunday | 96°F | Mostly Sunny | 3 to 7 mph WSW | 7% |
| Sunday Night | 68°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 8 mph NNE | 39% |
| Monday | 84°F | Showers And Thunderstorms Likely | 6 to 10 mph NE | 60% |
| Monday Night | 60°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 7 to 13 mph NNE | 60% |
| Tuesday | 76°F | Slight Chance Showers And Thunderstorms | 8 to 13 mph NNE | 23% |
| Tuesday Night | 57°F | Partly Cloudy | 6 to 13 mph N | 13% |
| Wednesday | 76°F | Mostly Sunny | 6 to 10 mph N | 3% |
| Wednesday Night | 56°F | Partly Cloudy | 3 to 10 mph N | 2% |
| Thursday | 77°F | Mostly Sunny | 3 to 9 mph N | 2% |
| Thursday Night | 57°F | Partly Cloudy | 2 to 8 mph NNE | 3% |
| Friday | 78°F | Mostly Sunny | 3 to 9 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grayville, IL
Last spring frost
Apr 7
First fall frost
Oct 25
Growing season
201 days
Hardiness zone
7a
Explore more for Grayville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Grayville, Il (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.