Georgetown, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Georgetown, a city in Vermilion County, Illinois.
This Afternoon
87°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny, with a high near 87. South wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Georgetown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 87°F | Slight Chance Showers And Thunderstorms | 5 mph S | 21% |
| Tonight | 68°F | Mostly Cloudy | 5 mph S | 13% |
| Sunday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 10 mph N | 50% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms | 9 to 13 mph NNE | 46% |
| Monday | 71°F | Showers And Thunderstorms Likely | 10 to 14 mph NE | 61% |
| Monday Night | 55°F | Chance Rain Showers | 13 mph NE | 48% |
| Tuesday | 68°F | Chance Rain Showers | 13 mph NE | 43% |
| Tuesday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 13 mph NNE | 21% |
| Wednesday | 69°F | Partly Sunny | 7 to 10 mph NNE | 12% |
| Wednesday Night | 54°F | Mostly Cloudy | 3 to 10 mph N | 3% |
| Thursday | 72°F | Partly Sunny | 5 to 8 mph NNE | 2% |
| Thursday Night | 56°F | Mostly Cloudy | 2 to 7 mph NNE | 4% |
| Friday | 75°F | Partly Sunny | 3 to 7 mph NNE | 4% |
| Friday Night | 54°F | Partly Cloudy | 2 to 6 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Georgetown (39.977, -87.635). Updated through the day.
Growing snapshot for Georgetown
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
171 days
Hardiness zone
6a
More local growing data for Georgetown: nearby ZIP 61846 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Perrysville 4 Wnw, In (8.6 mi from Georgetown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.