Heritage Lake, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heritage Lake, a community in Tazewell County, Illinois.
Overnight
56°F
Chance Light Rain
A chance of rain. Mostly cloudy, with a low around 56. South southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Heritage Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Chance Light Rain | 14 mph SSW | 25% |
| Wednesday | 59°F | Patchy Drizzle | 13 to 16 mph SW | 12% |
| Wednesday Night | 46°F | Patchy Drizzle then Mostly Cloudy | 13 mph SW | 10% |
| Thursday | 58°F | Mostly Cloudy then Slight Chance Light Rain | 10 to 15 mph WSW | 19% |
| Thursday Night | 43°F | Chance Light Rain | 6 to 9 mph NW | 33% |
| Friday | 52°F | Partly Sunny | 12 mph N | 6% |
| Friday Night | 33°F | Partly Cloudy | 2 to 8 mph NNW | 0% |
| Saturday | 52°F | Sunny | 2 to 6 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 3 mph WNW | 2% |
| Sunday | 58°F | Sunny | 2 to 8 mph W | 1% |
| Sunday Night | 34°F | Clear | 5 mph WSW | 0% |
| Monday | 63°F | Sunny | 2 to 9 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 6 mph WSW | 0% |
| Tuesday | 65°F | Sunny | 6 mph WNW | 1% |
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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Mackinaw
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Marquette Heights
Minier
Morton
North Pekin
Pekin
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 Nov 4, 2026.