Effingham, IL Weather & Growing Conditions
Overnight
70°F
Partly Cloudy
Partly cloudy, with a low around 70. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Partly Cloudy | 5 mph SE | 6% |
| Saturday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph SSW | 15% |
| Saturday Night | 70°F | Mostly Cloudy | 3 to 7 mph SSW | 10% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph WNW | 22% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 7 mph NNE | 45% |
| Monday | 78°F | Rain Showers Likely | 10 mph NE | 61% |
| Monday Night | 57°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 to 12 mph NE | 58% |
| Tuesday | 72°F | Chance Showers And Thunderstorms | 12 mph NNE | 37% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 12 mph NNE | 7% |
| Wednesday | 73°F | Partly Sunny | 8 mph N | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 8 mph NNE | 3% |
| Thursday | 74°F | Mostly Sunny | 3 to 7 mph NNE | 3% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 6 mph NNE | 3% |
| Friday | 75°F | Mostly Sunny | 3 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Effingham, IL
Last spring frost
Apr 13
First fall frost
Oct 24
Growing season
191 days
Hardiness zone
6b
Explore more for Effingham, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Effingham 3Sw, Il (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.