Keithsburg, IL Weather & Growing Conditions
Overnight
61°F
Mostly Clear
Mostly clear. Low around 61, with temperatures rising to around 63 overnight. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 87°F | Mostly Sunny | 5 to 10 mph S | 6% |
| Tuesday Night | 68°F | Showers And Thunderstorms Likely | 5 mph NE | 57% |
| Wednesday | 80°F | Showers And Thunderstorms Likely | 5 mph NE | 77% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 0 to 5 mph N | 81% |
| Thursday | 80°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 64% |
| Thursday Night | 62°F | Partly Cloudy | 0 mph | 8% |
| Friday | 83°F | Mostly Sunny | 0 mph | 6% |
| Friday Night | 65°F | Mostly Clear | 0 mph | 13% |
| Saturday | 86°F | Sunny | 0 to 5 mph S | 10% |
| Saturday Night | 71°F | Mostly Clear | 5 mph S | 11% |
| Sunday | 87°F | Sunny | 5 to 10 mph SW | 11% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 26% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 26% |
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 Aug 4, 2026.