Meredosia, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Meredosia, a village in Morgan County, Illinois.
Overnight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. South southeast wind around 5 mph.
7-day forecast for Meredosia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Partly Cloudy | 5 mph SSE | 5% |
| Saturday | 92°F | Mostly Cloudy | 3 to 7 mph SSW | 9% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 mph SSW | 36% |
| Sunday | 81°F | Chance Showers And Thunderstorms | 1 to 8 mph NNW | 51% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 71% |
| Monday | 68°F | Showers And Thunderstorms Likely | 12 mph NE | 71% |
| Monday Night | 55°F | Chance Rain Showers | 10 mph NE | 30% |
| Tuesday | 65°F | Slight Chance Rain Showers | 10 mph NE | 24% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 9 mph NNE | 6% |
| Wednesday | 69°F | Mostly Sunny | 5 to 8 mph NNE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 6 mph NNE | 1% |
| Thursday | 71°F | Mostly Sunny | 2 to 6 mph NNE | 3% |
| Thursday Night | 55°F | Partly Cloudy | 1 to 5 mph NE | 3% |
| Friday | 74°F | Mostly Sunny | 2 to 6 mph NE | 6% |
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 Sep 19, 2026.