Viola, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Viola, a village in Mercer County, Illinois.

This Afternoon

68°F

Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a high near 68. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Viola

When	Temp	Forecast	Wind	Precip
This Afternoon	68°F	Showers And Thunderstorms Likely	15 mph S	68%
Tonight	51°F	Showers And Thunderstorms Likely	10 to 15 mph S	74%
Wednesday	56°F	Chance Rain Showers	15 mph SW	26%
Wednesday Night	44°F	Mostly Cloudy	15 mph SW	14%
Thursday	55°F	Chance Rain Showers	10 to 15 mph W	31%
Thursday Night	42°F	Chance Rain Showers then Mostly Cloudy	5 to 10 mph NW	30%
Friday	52°F	Partly Sunny	5 to 10 mph N	12%
Friday Night	34°F	Partly Cloudy	0 to 5 mph N	1%
Saturday	53°F	Mostly Sunny	0 to 5 mph W	2%
Saturday Night	35°F	Partly Cloudy	0 to 5 mph W	3%
Sunday	59°F	Sunny	5 to 10 mph W	10%
Sunday Night	36°F	Mostly Clear	5 mph W	3%
Monday	63°F	Sunny	5 to 15 mph SW	1%
Monday Night	40°F	Mostly Clear	5 to 10 mph W	0%

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

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

All Illinois locations ›

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 Nov 4, 2026.