Plainville, IL Weather & Growing Conditions
Overnight
65°F
Clear
Clear, with a low around 65. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Clear | 5 mph SE | 0% |
| Tuesday | 89°F | Sunny | 6 mph S | 0% |
| Tuesday Night | 70°F | Partly Cloudy | 5 mph SE | 14% |
| Wednesday | 86°F | Mostly Sunny then Scattered Showers And Thunderstorms | 5 mph S | 48% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms then Showers And Thunderstorms | 6 mph E | 90% |
| Thursday | 84°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 90% |
| Thursday Night | 67°F | Partly Cloudy | 3 mph SE | 8% |
| Friday | 86°F | Mostly Sunny | 2 mph SW | 10% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 2 mph S | 25% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph SW | 23% |
| Saturday Night | 73°F | Mostly Clear | 5 to 8 mph S | 6% |
| Sunday | 91°F | Sunny | 7 to 10 mph SW | 2% |
| Sunday Night | 73°F | Mostly Clear | 6 to 9 mph S | 7% |
| Monday | 92°F | Mostly Sunny | 7 to 10 mph SW | 8% |
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 Aug 4, 2026.