LaPlace, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for LaPlace, a community in Piatt County, Illinois.
Today
90°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 10am and 1pm. Mostly cloudy, with a high near 90. Southwest wind around 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for LaPlace
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 20% |
| Tonight | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph S | 16% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 3 to 12 mph NNW | 47% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 61% |
| Monday | 69°F | Showers And Thunderstorms Likely | 16 mph NE | 70% |
| Monday Night | 54°F | Chance Rain Showers | 15 mph NE | 46% |
| Tuesday | 66°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 15 mph NE | 23% |
| Tuesday Night | 51°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 8 to 14 mph NNE | 23% |
| Wednesday | 69°F | Mostly Sunny | 12 mph NNE | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 6 to 12 mph NNE | 3% |
| Thursday | 71°F | Mostly Sunny | 7 to 10 mph NNE | 2% |
| Thursday Night | 54°F | Partly Cloudy | 5 to 9 mph NNE | 2% |
| Friday | 74°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Friday Night | 53°F | Partly Cloudy | 6 to 9 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for LaPlace (39.798, -88.715). Updated through the day.
Growing snapshot for LaPlace
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
More local growing data for LaPlace: 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 LaPlace). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.