Lake City, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake City, a community in Piatt County, Illinois.
Overnight
57°F
Chance Light Rain
A chance of rain. Mostly cloudy. Low around 57, with temperatures rising to around 62 overnight. South southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Lake City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Chance Light Rain | 15 mph SSW | 39% |
| Wednesday | 62°F | Slight Chance Light Rain then Patchy Drizzle | 12 to 15 mph SW | 15% |
| Wednesday Night | 46°F | Patchy Drizzle then Mostly Cloudy | 12 mph SW | 10% |
| Thursday | 61°F | Partly Sunny | 10 to 15 mph WSW | 8% |
| Thursday Night | 41°F | Mostly Cloudy | 5 to 8 mph NW | 2% |
| Friday | 53°F | Partly Sunny | 9 to 13 mph NNW | 6% |
| Friday Night | 32°F | Partly Cloudy | 3 to 9 mph NNW | 0% |
| Saturday | 53°F | Sunny | 3 to 7 mph NNW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 3 mph WNW | 0% |
| Sunday | 58°F | Sunny | 3 to 9 mph WNW | 1% |
| Sunday Night | 32°F | Clear | 5 mph W | 1% |
| Monday | 63°F | Sunny | 2 to 8 mph SW | 0% |
| Monday Night | 37°F | Clear | 5 mph SW | 0% |
| Tuesday | 66°F | Sunny | 6 mph WNW | 1% |
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 4, 2026.