Elwin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Elwin, a community in Macon County, Illinois.
Today
91°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 11am and 1pm. Mostly cloudy, with a high near 91. South southwest wind around 8 mph. Chance of precipitation is 20%.
7-day forecast for Elwin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Slight Chance Showers And Thunderstorms | 8 mph SSW | 16% |
| Tonight | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph SSW | 17% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 3 to 12 mph NNW | 45% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 62% |
| Monday | 70°F | Showers And Thunderstorms Likely | 17 mph NE | 70% |
| Monday Night | 54°F | Chance Rain Showers | 15 mph NE | 47% |
| Tuesday | 67°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 16 mph NE | 21% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 7 to 13 mph NNE | 18% |
| Wednesday | 70°F | Mostly Sunny | 12 mph NNE | 3% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 10 mph NNE | 3% |
| Thursday | 72°F | Mostly Sunny | 6 to 10 mph NNE | 2% |
| Thursday Night | 54°F | Partly Cloudy | 5 to 9 mph NNE | 2% |
| Friday | 74°F | Mostly Sunny | 6 to 10 mph NE | 2% |
| Friday Night | 53°F | Partly Cloudy | 5 to 9 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Elwin (39.776, -88.978). Updated through the day.
Growing snapshot for Elwin
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6a
More local growing data for Elwin: nearby ZIP 62532 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Argenta
Boody
Dalton City
Decatur
Forsyth
Harristown
Long Creek
Macon
Maroa
Mount Zion
Niantic
Oreana
Warrensburg
Climate data from the nearest NOAA station, Decatur Wtp, Il (3.9 mi from Elwin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.