Romeoville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Romeoville, a village in Will County, Illinois.
This Afternoon
73°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a high near 73. East wind 10 to 15 mph. Chance of precipitation is 60%.
7-day forecast for Romeoville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Rain Showers Likely | 10 to 15 mph E | 56% |
| Tonight | 63°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 10 mph E | 42% |
| Saturday | 78°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 79% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph NNE | 82% |
| Sunday | 69°F | Showers And Thunderstorms | 10 to 15 mph NNE | 82% |
| Sunday Night | 56°F | Rain Showers Likely | 15 mph NE | 67% |
| Monday | 64°F | Rain Showers Likely | 15 mph ENE | 56% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 32% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 15 mph NE | 14% |
| Wednesday | 66°F | Partly Sunny | 10 mph NNE | 7% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 4% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Thursday Night | 54°F | Mostly Cloudy | 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Romeoville (41.628, -88.101). Updated through the day.
Growing snapshot for Romeoville
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
6a
More local growing data for Romeoville: nearby ZIP 60446 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Romeoville Wfo, Il (2.1 mi from Romeoville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.