Macon, IL Weather & Growing Conditions
This Afternoon
91°F
Mostly Sunny
Mostly sunny, with a high near 91. East northeast wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Mostly Sunny | 9 mph ENE | 12% |
| Tonight | 71°F | Partly Cloudy | 9 mph ESE | 8% |
| Saturday | 91°F | Slight Chance Showers And Thunderstorms | 10 mph SSW | 21% |
| Saturday Night | 69°F | Mostly Cloudy then Slight Chance Rain Showers | 8 mph SSW | 21% |
| Sunday | 86°F | Chance Rain Showers | 3 to 12 mph NW | 39% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 13 mph NE | 67% |
| Monday | 72°F | Showers And Thunderstorms Likely | 14 mph NE | 67% |
| Monday Night | 55°F | Showers And Thunderstorms Likely | 12 to 15 mph NE | 66% |
| Tuesday | 68°F | Chance Rain Showers | 15 mph NE | 34% |
| Tuesday Night | 52°F | Mostly Cloudy | 7 to 13 mph NNE | 7% |
| Wednesday | 71°F | Partly Sunny | 8 to 12 mph NNE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 9 mph NNE | 1% |
| Thursday | 72°F | Mostly Sunny | 5 to 9 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 5 to 8 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Macon, IL
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6a
Explore more for Macon, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Decatur Wtp, Il (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.