Lake City, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake City, a community in Piatt County, Illinois.
This Afternoon
73°F
Slight Chance T-storms
A slight chance of rain between 2pm and 3pm, then a slight chance of thunderstorms and a slight chance of rain between 3pm and 4pm, then a chance of rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 73. South southeast wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Slight Chance T-storms | 18 to 23 mph SSE | 44% |
| Tonight | 54°F | Rain | 15 to 18 mph S | 90% |
| Wednesday | 61°F | Slight Chance Light Rain then Mostly Cloudy | 12 to 15 mph SW | 22% |
| Wednesday Night | 43°F | Mostly Cloudy | 9 mph SW | 1% |
| Thursday | 62°F | Mostly Sunny | 9 to 14 mph WSW | 3% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 3 to 7 mph WNW | 16% |
| Friday | 56°F | Partly Sunny | 6 to 10 mph NNW | 11% |
| Friday Night | 35°F | Mostly Cloudy | 3 to 9 mph NNW | 7% |
| Saturday | 54°F | Mostly Sunny | 5 mph NW | 1% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph W | 1% |
| Sunday | 60°F | Sunny | 3 to 9 mph W | 9% |
| Sunday Night | 33°F | Mostly Clear | 3 to 7 mph WNW | 6% |
| Monday | 63°F | Sunny | 5 to 12 mph WSW | 3% |
| Monday Night | 37°F | Mostly Clear | 7 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Lake City (39.754, -88.719). Updated through the day.
Growing snapshot for Lake City
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
More local growing data for Lake City: nearby ZIP 61936 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Decatur Ap, Il (7.7 mi from Lake City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.