Plainville, IL Weather & Growing Conditions
Tonight
52°F
Chance Light Rain then Chance Rain Showers
A chance of rain before 9pm, then a chance of rain showers. Cloudy, with a low around 52. Southwest wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Chance Light Rain then Chance Rain Showers | 9 to 13 mph SW | 41% |
| Wednesday | 59°F | Chance Rain Showers then Cloudy | 10 to 15 mph SW | 12% |
| Wednesday Night | 44°F | Mostly Cloudy | 6 to 9 mph SW | 2% |
| Thursday | 59°F | Mostly Sunny | 7 to 12 mph W | 8% |
| Thursday Night | 43°F | Mostly Cloudy | 6 mph NW | 14% |
| Friday | 55°F | Mostly Cloudy | 8 mph N | 6% |
| Friday Night | 37°F | Mostly Cloudy | 1 to 6 mph N | 2% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 37°F | Mostly Clear | 2 mph W | 1% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 9% |
| Sunday Night | 38°F | Mostly Clear | 5 mph W | 3% |
| Monday | 66°F | Sunny | 3 to 8 mph SW | 1% |
| Monday Night | 42°F | Mostly Clear | 6 mph SW | 0% |
| Tuesday | 67°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Plainville, IL
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
6a
Explore more for Plainville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Quincy Rgnl Ap, Il (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.