Peoria Heights, IL Weather & Growing Conditions
Today
87°F
Mostly Sunny
Mostly sunny, with a high near 87. South southwest wind 3 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny | 3 to 7 mph SSW | 0% |
| Tonight | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph S | 17% |
| Wednesday | 83°F | Chance Showers And Thunderstorms | 6 mph SSW | 42% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 2 to 6 mph NNW | 88% |
| Thursday | 81°F | Showers And Thunderstorms | 3 mph S | 78% |
| Thursday Night | 66°F | Partly Cloudy | 2 mph SE | 14% |
| Friday | 83°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph S | 16% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 1 mph S | 16% |
| Saturday | 86°F | Mostly Sunny | 2 to 6 mph SSW | 11% |
| Saturday Night | 72°F | Mostly Clear | 3 to 7 mph S | 10% |
| Sunday | 89°F | Sunny | 7 to 10 mph SSW | 7% |
| Sunday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 6 to 9 mph SSW | 21% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph SSW | 21% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Peoria Heights, IL
Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6a
Explore more for Peoria Heights, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Peoria Gtr Peoria Ap, Il (8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.