Dallas City, IL Weather & Growing Conditions
Today
87°F
Patchy Fog then Mostly Cloudy
Patchy fog before 8am. Mostly cloudy, with a high near 87. South wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Patchy Fog then Mostly Cloudy | 5 to 10 mph S | 12% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 5 mph W | 64% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 15 mph N | 81% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 68% |
| Monday | 65°F | Showers And Thunderstorms Likely | 15 mph NE | 68% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 32% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 67°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph NE | 1% |
| Thursday | 70°F | Partly Sunny | 5 mph NE | 5% |
| Thursday Night | 56°F | Partly Cloudy | 5 mph NE | 4% |
| Friday | 73°F | Mostly Sunny | 5 mph NE | 5% |
| Friday Night | 56°F | Partly Cloudy | 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dallas City, IL
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
6a
Explore more for Dallas City, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, La Harpe, Il (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.