Effingham, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Effingham, a city in Effingham County, Illinois.
Today
94°F
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 11am and noon, then a slight chance of showers and thunderstorms between noon and 1pm. Mostly sunny, with a high near 94. Southwest wind around 7 mph. Chance of precipitation is 30%.
7-day forecast for Effingham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 mph SW | 27% |
| Tonight | 70°F | Mostly Cloudy | 5 mph S | 4% |
| Sunday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph NW | 26% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 6 to 10 mph NE | 53% |
| Monday | 75°F | Showers And Thunderstorms Likely | 10 mph NE | 69% |
| Monday Night | 56°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 8 to 12 mph NE | 59% |
| Tuesday | 70°F | Slight Chance Showers And Thunderstorms | 12 mph NNE | 22% |
| Tuesday Night | 53°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 12 mph NNE | 22% |
| Wednesday | 72°F | Mostly Sunny | 9 mph NNE | 5% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 8 mph N | 3% |
| Thursday | 74°F | Mostly Sunny | 5 to 8 mph N | 2% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 7 mph NNE | 2% |
| Friday | 76°F | Mostly Sunny | 3 to 8 mph NE | 2% |
| Friday Night | 54°F | Partly Cloudy | 3 to 7 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Effingham (39.120, -88.551). Updated through the day.
Growing snapshot for Effingham
Last spring frost
Apr 13
First fall frost
Oct 24
Growing season
191 days
Hardiness zone
6b
More local growing data for Effingham: nearby ZIP 62401 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Effingham 3Sw, Il (3.3 mi from Effingham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.