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.
Tonight
69°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Southeast wind around 10 mph. Chance of precipitation is 50%.
7-day forecast for Oak Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph SE | 52% |
| Saturday | 83°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph S | 64% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph N | 79% |
| Sunday | 72°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 15 mph NE | 58% |
| Monday | 65°F | Rain Showers Likely | 15 mph NE | 57% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 53% |
| Tuesday | 63°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 45% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 67°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 70°F | Mostly Sunny | 5 mph NE | 4% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 6% |
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 Sep 19, 2026.