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
88°F
Mostly Sunny
Mostly sunny, with a high near 88. South southwest wind around 7 mph.
7-day forecast for Oak Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny | 7 mph SSW | 0% |
| Tonight | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSE | 44% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 62% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 5 mph N | 84% |
| Thursday | 81°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 3 mph NE | 66% |
| Thursday Night | 63°F | Partly Cloudy | 2 mph ENE | 9% |
| Friday | 83°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph S | 16% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 1 mph SE | 16% |
| Saturday | 86°F | Sunny | 2 to 6 mph SSW | 10% |
| Saturday Night | 71°F | Mostly Clear | 3 to 8 mph S | 9% |
| Sunday | 88°F | Sunny | 8 to 12 mph SSW | 7% |
| Sunday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 6 to 10 mph S | 29% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 to 10 mph SSW | 29% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 9 mph SSW | 30% |
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 Aug 4, 2026.