Macomb, IL Weather & Growing Conditions
Today
88°F
Sunny
Sunny, with a high near 88. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 5 mph S | 0% |
| Tonight | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 19% |
| Wednesday | 83°F | Chance Showers And Thunderstorms | 0 mph | 54% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 0 to 5 mph N | 89% |
| Thursday | 80°F | Showers And Thunderstorms | 0 mph | 81% |
| Thursday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 16% |
| Friday | 82°F | Mostly Sunny | 0 mph | 5% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 mph | 22% |
| Saturday | 86°F | Slight Chance Showers And Thunderstorms then Sunny | 0 to 5 mph S | 17% |
| Saturday Night | 70°F | Mostly Clear | 0 to 5 mph S | 8% |
| Sunday | 87°F | Sunny | 5 to 10 mph SW | 7% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 16% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 16% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Macomb, IL
Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
185 days
Hardiness zone
6a
Explore more for Macomb, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Prairie City 2S, Il (13.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.