Viola, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Viola, a village in Mercer County, Illinois.
Overnight
69°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3am and 4am, then patchy fog and a slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southeast wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Viola
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Slight Chance Showers And Thunderstorms | 10 mph SE | 24% |
| Saturday | 83°F | Patchy Fog | 5 to 10 mph SE | 56% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 84% |
| Sunday | 72°F | Showers And Thunderstorms | 10 to 15 mph NE | 79% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 15 mph NE | 53% |
| Monday | 64°F | Showers And Thunderstorms Likely | 15 mph NE | 64% |
| Monday Night | 53°F | Rain Showers Likely | 15 mph NE | 55% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 67°F | Mostly Sunny | 10 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 5 mph NE | 1% |
| Thursday | 69°F | Mostly Sunny | 5 mph NE | 5% |
| Thursday Night | 55°F | Partly Cloudy | 5 mph NE | 3% |
| Friday | 72°F | Mostly Sunny | 5 to 10 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Viola (41.205, -90.586). Updated through the day.
Growing snapshot for Viola
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
5b
More local growing data for Viola: nearby ZIP 61486 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Aledo
Alexis
Cable
Eliza
Hamlet
Joy
Keithsburg
Matherville
Millersburg
New Boston
North Henderson
Preemption
Reynolds
Seaton
Sherrard
Windsor
Climate data from the nearest NOAA station, Aledo, Il (8.7 mi from Viola). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.