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Viola, IL Weather & Growing Conditions

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

This Afternoon
81°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 5 to 10 mph. Chance of precipitation is 20%.

7-day forecast for Viola

WhenTempForecastWindPrecip
This Afternoon 81°F Slight Chance Showers And Thunderstorms 5 to 10 mph S 21%
Tonight 66°F Showers And Thunderstorms 5 mph SE 79%
Sunday 70°F Showers And Thunderstorms Likely 5 to 15 mph NE 73%
Sunday Night 58°F Chance Showers And Thunderstorms 15 mph NE 53%
Monday 63°F Rain Showers Likely 15 mph NE 71%
Monday Night 54°F Rain Showers Likely 10 to 15 mph NE 71%
Tuesday 62°F Chance Rain Showers 10 to 15 mph NE 52%
Tuesday Night 50°F Mostly Cloudy 5 to 10 mph NE 8%
Wednesday 64°F Partly Sunny 10 mph NE 3%
Wednesday Night 53°F Partly Cloudy 5 mph NE 3%
Thursday 68°F Partly Sunny 5 mph NE 3%
Thursday Night 56°F Slight Chance Rain Showers 0 to 5 mph NE 15%
Friday 71°F Slight Chance Rain Showers then Partly Sunny 5 mph NE 15%
Friday Night 56°F Partly Cloudy 5 mph NE 7%

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

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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.