Oak Grove, IL Weather & Growing Conditions
Today
87°F
Mostly Sunny
Mostly sunny. High near 87, with temperatures falling to around 85 in the afternoon. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny | 5 to 10 mph SW | 7% |
| Tonight | 68°F | Showers And Thunderstorms Likely | 5 mph NE | 71% |
| Wednesday | 79°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NE | 80% |
| Wednesday Night | 64°F | Showers And Thunderstorms | 5 mph N | 76% |
| Thursday | 81°F | Chance Rain Showers then Mostly Sunny | 5 mph NE | 50% |
| Thursday Night | 63°F | Partly Cloudy | 0 to 5 mph E | 9% |
| Friday | 83°F | Mostly Sunny | 0 to 5 mph S | 6% |
| Friday Night | 66°F | Mostly Clear | 5 mph S | 10% |
| Saturday | 86°F | Sunny | 5 to 10 mph S | 9% |
| Saturday Night | 71°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 15% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Sunny | 10 to 15 mph SW | 15% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph S | 33% |
| Monday | 86°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 mph S | 33% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph S | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oak Grove, IL
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b
Explore more for Oak Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Moline Quad City Intl Ap, Il (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.