Rock Island, IL Weather & Growing Conditions
Tonight
53°F
Rain Showers Likely
Rain showers likely before 3am. Mostly cloudy. Low around 53, with temperatures rising to around 55 overnight. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Rain Showers Likely | 10 to 15 mph S | 73% |
| Wednesday | 56°F | Chance Rain Showers | 15 mph SW | 26% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SW | 21% |
| Thursday | 55°F | Chance Rain Showers | 10 mph W | 47% |
| Thursday Night | 43°F | Chance Rain Showers then Mostly Cloudy | 5 mph NW | 27% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 12% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 37°F | Partly Cloudy | 0 to 5 mph W | 3% |
| Sunday | 58°F | Mostly Sunny | 5 mph W | 11% |
| Sunday Night | 38°F | Mostly Clear | 0 to 5 mph W | 3% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 42°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rock Island, IL
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b
Explore more for Rock Island, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Moline Quad City Intl Ap, Il (2.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.