Meredosia, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Meredosia, a village in Morgan County, Illinois.
Overnight
54°F
Slight Chance Light Rain
A slight chance of rain before 1am. Mostly cloudy, with a low around 54. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Meredosia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Slight Chance Light Rain | 10 mph SW | 20% |
| Wednesday | 59°F | Slight Chance Drizzle | 10 to 14 mph WSW | 20% |
| Wednesday Night | 46°F | Slight Chance Drizzle then Mostly Cloudy | 10 mph WSW | 20% |
| Thursday | 60°F | Mostly Cloudy | 9 to 13 mph W | 5% |
| Thursday Night | 43°F | Mostly Cloudy | 3 to 7 mph NW | 9% |
| Friday | 53°F | Partly Sunny | 8 mph NNW | 3% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph NNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 59°F | Sunny | 1 to 6 mph W | 2% |
| Sunday Night | 34°F | Clear | 2 mph NW | 0% |
| Monday | 64°F | Sunny | 0 to 6 mph WSW | 0% |
| Monday Night | 39°F | Clear | 3 mph WSW | 0% |
| Tuesday | 66°F | Sunny | 3 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Meredosia (39.831, -90.557). Updated through the day.
Growing snapshot for Meredosia
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6a
More local growing data for Meredosia: nearby ZIP 62665 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alexander
Chapin
Concord
Franklin
Jacksonville
Lynnville
Merritt
Murrayville
Riggston
South Jacksonville
Waverly
Woodson
Climate data from the nearest NOAA station, Winchester, Il (13.2 mi from Meredosia). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.