Lynnville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lynnville, a village in Morgan County, Illinois.
This Afternoon
71°F
Light Rain
Rain and a chance of thunderstorms. Cloudy. High near 71, with temperatures falling to around 65 in the afternoon. South southeast wind around 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Lynnville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Light Rain | 20 mph SSE | 90% |
| Tonight | 51°F | Light Rain | 10 to 18 mph SSW | 75% |
| Wednesday | 59°F | Chance Rain Showers then Mostly Cloudy | 12 to 15 mph WSW | 10% |
| Wednesday Night | 42°F | Mostly Cloudy | 9 mph SW | 0% |
| Thursday | 61°F | Mostly Sunny | 8 to 13 mph WSW | 6% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 3 to 7 mph NW | 21% |
| Friday | 56°F | Mostly Cloudy | 6 to 9 mph NNW | 9% |
| Friday Night | 35°F | Mostly Cloudy | 1 to 7 mph NNW | 2% |
| Saturday | 54°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph W | 2% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 4% |
| Monday | 65°F | Sunny | 2 to 9 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 5 mph WSW | 1% |
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
6a
More local growing data for Lynnville: nearby ZIP 62628 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alexander
Chapin
Concord
Franklin
Jacksonville
Meredosia
Merritt
Murrayville
Riggston
South Jacksonville
Waverly
Woodson
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 Nov 3, 2026.