Oak Run, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Run, a community in Knox County, Illinois.
Today
84°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 84. Southeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oak Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Chance Showers And Thunderstorms | 7 mph SE | 28% |
| Tonight | 67°F | Showers And Thunderstorms Likely | 2 to 6 mph WSW | 87% |
| Sunday | 73°F | Showers And Thunderstorms Likely | 3 to 14 mph NNE | 72% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 57% |
| Monday | 65°F | Showers And Thunderstorms Likely | 15 mph ENE | 63% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 49% |
| Tuesday | 63°F | Chance Rain Showers | 14 mph NE | 31% |
| Tuesday Night | 49°F | Partly Cloudy | 6 to 12 mph NNE | 8% |
| Wednesday | 67°F | Mostly Sunny | 7 to 10 mph NNE | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 7 mph NNE | 1% |
| Thursday | 69°F | Partly Sunny | 6 mph NNE | 6% |
| Thursday Night | 54°F | Partly Cloudy | 5 mph NE | 5% |
| Friday | 73°F | Mostly Sunny | 3 to 7 mph NE | 3% |
| Friday Night | 54°F | Partly Cloudy | 5 mph ENE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Oak Run (40.960, -90.130). Updated through the day.
Growing snapshot for Oak Run
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
5b
More local growing data for Oak Run: nearby ZIP 61428 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Abingdon
Altona
East Galesburg
Galesburg
Gilson
Henderson
Knoxville
Maquon
Nekoma
Oneida
Rio
St. Augustine
Victoria
Wataga
Williamsfield
Yates City
Climate data from the nearest NOAA station, Knoxville, Il (9.4 mi from Oak Run). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.