Oak Grove, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Grove, a village in Rock Island County, Illinois.
This Afternoon
69°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 69, with temperatures falling to around 67 in the afternoon. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Oak Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Showers And Thunderstorms Likely | 15 mph S | 70% |
| Tonight | 52°F | Showers And Thunderstorms Likely | 10 to 15 mph S | 74% |
| Wednesday | 56°F | Chance Rain Showers | 15 mph SW | 27% |
| Wednesday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph SW | 21% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 44% |
| Thursday Night | 42°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 27% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 13% |
| Friday Night | 35°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 36°F | Partly Cloudy | 0 to 5 mph W | 3% |
| Sunday | 58°F | Mostly Sunny | 5 to 10 mph W | 11% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 3% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 41°F | Mostly Clear | 5 to 10 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Oak Grove (41.412, -90.574). Updated through the day.
Growing snapshot for Oak Grove
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b
More local growing data for Oak Grove: nearby ZIP 61264 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Moline Quad City Intl Ap, Il (5.7 mi from Oak Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.