Macon, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Macon, a city in Macon County, Illinois.
Overnight
63°F
Clear
Clear, with a low around 63. Southeast wind around 3 mph.
7-day forecast for Macon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 3 mph SE | 0% |
| Tuesday | 86°F | Sunny | 2 to 6 mph SSE | 0% |
| Tuesday Night | 66°F | Mostly Clear | 6 mph SSE | 0% |
| Wednesday | 86°F | Mostly Sunny | 5 to 8 mph S | 8% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 6 mph S | 81% |
| Thursday | 82°F | Showers And Thunderstorms | 5 to 8 mph SSW | 81% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph SSE | 23% |
| Friday | 84°F | Partly Sunny | 5 mph SW | 11% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 3 mph SSW | 20% |
| Saturday | 86°F | Slight Chance Rain Showers then Mostly Sunny | 3 to 7 mph SSW | 20% |
| Saturday Night | 69°F | Mostly Clear | 5 to 8 mph S | 12% |
| Sunday | 88°F | Sunny | 8 to 13 mph SSW | 6% |
| Sunday Night | 71°F | Mostly Clear | 12 mph SSW | 10% |
| Monday | 89°F | Mostly Sunny | 12 mph SSW | 12% |
Forecast source: National Weather Service (api.weather.gov) for Macon (39.709, -88.997). Updated through the day.
Growing snapshot for Macon
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6a
More local growing data for Macon: nearby ZIP 62544 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Argenta
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Dalton City
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Harristown
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Maroa
Mount Zion
Niantic
Oreana
Warrensburg
Climate data from the nearest NOAA station, Decatur Wtp, Il (8.4 mi from Macon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.