Lynnville, IL Weather & Growing Conditions

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

This Afternoon

90°F

Mostly Sunny

Mostly sunny, with a high near 90. East wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Lynnville

When	Temp	Forecast	Wind	Precip
This Afternoon	90°F	Mostly Sunny	6 mph E	12%
Tonight	72°F	Partly Cloudy	8 mph ESE	14%
Saturday	93°F	Partly Sunny	6 to 9 mph SSW	7%
Saturday Night	69°F	Mostly Cloudy then Chance Showers And Thunderstorms	7 mph SSW	31%
Sunday	85°F	Rain Showers Likely	2 to 8 mph NW	70%
Sunday Night	61°F	Showers And Thunderstorms Likely then Chance Showers And Thunderstorms	7 to 12 mph NE	70%
Monday	71°F	Showers And Thunderstorms Likely	8 to 13 mph NE	70%
Monday Night	56°F	Chance Showers And Thunderstorms	8 to 13 mph NE	44%
Tuesday	67°F	Chance Rain Showers then Mostly Cloudy	12 mph NNE	32%
Tuesday Night	51°F	Mostly Cloudy	5 to 10 mph NNE	4%
Wednesday	71°F	Mostly Sunny	8 mph NNE	1%
Wednesday Night	53°F	Partly Cloudy	2 to 6 mph NNE	0%
Thursday	72°F	Mostly Sunny	2 to 6 mph NNE	4%
Thursday Night	55°F	Partly Cloudy	5 mph NNE	4%

Forecast source: National Weather Service (api.weather.gov) for Lynnville (39.686, -90.346). Updated through the day.

Growing snapshot for Lynnville

Last spring frost

Apr 17

First fall frost

Oct 21

Growing season

186 days

Hardiness zone

More local growing data for Lynnville: nearby ZIP 62628 weather · frost dates · planting calendar · Illinois frost dates

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Alexander Chapin Concord Franklin Jacksonville Meredosia Merritt Murrayville Riggston South Jacksonville Waverly Woodson

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Climate data from the nearest NOAA station, Jacksonville 2, Il (10.3 mi from Lynnville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.