Heritage Lake, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heritage Lake, a community in Tazewell County, Illinois.
Today
86°F
Mostly Cloudy
Mostly cloudy, with a high near 86. Southeast wind around 8 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Heritage Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Cloudy | 8 mph SE | 9% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 6 mph SSW | 52% |
| Sunday | 75°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 14 mph NNW | 70% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 16 mph NE | 62% |
| Monday | 65°F | Showers And Thunderstorms Likely | 16 mph ENE | 64% |
| Monday Night | 53°F | Chance Rain Showers | 12 to 16 mph NE | 47% |
| Tuesday | 64°F | Slight Chance Rain Showers | 15 mph NE | 22% |
| Tuesday Night | 51°F | Slight Chance Rain Showers then Partly Cloudy | 8 to 14 mph NNE | 15% |
| Wednesday | 67°F | Mostly Sunny | 12 mph NNE | 4% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 10 mph NNE | 1% |
| Thursday | 69°F | Mostly Sunny | 8 mph NNE | 2% |
| Thursday Night | 54°F | Partly Cloudy | 3 to 7 mph NE | 2% |
| Friday | 72°F | Mostly Sunny | 5 to 8 mph NE | 3% |
| Friday Night | 53°F | Partly Cloudy | 7 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Heritage Lake (40.547, -89.330). Updated through the day.
Growing snapshot for Heritage Lake
Last spring frost
Apr 21
First fall frost
Oct 17
Growing season
178 days
Hardiness zone
6a
More local growing data for Heritage Lake: nearby ZIP 61755 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
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Delavan
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Minier
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North Pekin
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South Pekin
Tremont
Washington
Climate data from the nearest NOAA station, Congerville 2Nw, Il (8.4 mi from Heritage Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.