Elwin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Elwin, a community in Macon County, Illinois.
Tonight
54°F
Rain
Rain before 1am, then rain showers likely. Mostly cloudy. Low around 54, with temperatures rising to around 59 overnight. South wind 16 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Elwin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain | 16 to 20 mph S | 96% |
| Wednesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 13 to 16 mph SW | 16% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 mph SW | 1% |
| Thursday | 61°F | Mostly Sunny | 9 to 15 mph WSW | 3% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance Light Rain | 7 mph WNW | 22% |
| Friday | 55°F | Mostly Cloudy | 7 to 12 mph NNW | 14% |
| Friday Night | 36°F | Mostly Cloudy | 2 to 9 mph NNW | 7% |
| Saturday | 53°F | Mostly Sunny | 2 to 6 mph NW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 3 mph W | 2% |
| Sunday | 59°F | Sunny | 2 to 10 mph W | 9% |
| Sunday Night | 34°F | Mostly Clear | 3 to 7 mph WNW | 5% |
| Monday | 63°F | Sunny | 3 to 12 mph WSW | 3% |
| Monday Night | 38°F | Mostly Clear | 5 to 8 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 7 mph WNW | 1% |
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 Nov 4, 2026.