Plainville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainville, a village in Adams County, Illinois.
This Afternoon
70°F
Light Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 70, with temperatures falling to around 66 in the afternoon. South wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
7-day forecast for Plainville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Light Rain | 17 mph S | 78% |
| Tonight | 52°F | Chance Light Rain then Chance Rain Showers | 8 to 14 mph SW | 47% |
| Wednesday | 58°F | Chance Rain Showers then Cloudy | 10 to 14 mph SW | 12% |
| Wednesday Night | 45°F | Mostly Cloudy | 9 mph SW | 2% |
| Thursday | 59°F | Mostly Sunny | 7 to 12 mph W | 8% |
| Thursday Night | 44°F | Mostly Cloudy | 7 mph NW | 14% |
| Friday | 55°F | Mostly Cloudy | 8 mph N | 6% |
| Friday Night | 38°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 | 2% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 8% |
| Sunday Night | 38°F | Mostly Clear | 5 mph W | 3% |
| Monday | 66°F | Sunny | 3 to 8 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 6 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Plainville (39.785, -91.182). Updated through the day.
Growing snapshot for Plainville
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
6a
More local growing data for Plainville: nearby ZIP 62365 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Adams
Bloomfield
Burton
Camp Point
Clayton
Coatsburg
Columbus
Fall Creek
Fowler
Golden
Kingston
La Prairie
Liberty
Lima
Loraine
Marcelline
Mendon
Paloma
Payson
Quincy
Richfield
Ursa
Climate data from the nearest NOAA station, Quincy Rgnl Ap, Il (9.8 mi from Plainville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.