Keithsburg, IL Weather & Growing Conditions
Tonight
69°F
Partly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Partly cloudy. Low around 69, with temperatures rising to around 71 overnight. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph SE | 41% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 5 mph S | 49% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph N | 76% |
| Sunday | 74°F | Showers And Thunderstorms | 5 to 10 mph NE | 76% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 mph NE | 72% |
| Monday | 66°F | Rain Showers Likely | 10 to 15 mph NE | 65% |
| Monday Night | 54°F | Rain Showers Likely | 10 mph NE | 56% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 37% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 68°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 71°F | Mostly Sunny | 0 to 5 mph NE | 6% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Keithsburg, IL
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
190 days
Hardiness zone
5b
Explore more for Keithsburg, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, New Boston Dam 17, Il (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.