Richton Park, IL Weather & Growing Conditions
Tonight
66°F
Showers And Thunderstorms
Rain showers before 10pm, then showers and thunderstorms between 10pm and 1am, then patchy fog and showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 66, with temperatures rising to around 69 overnight. Southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Showers And Thunderstorms | 5 mph SE | 100% |
| Sunday | 69°F | Patchy Fog | 5 to 15 mph NNE | 83% |
| Sunday Night | 56°F | Chance Rain Showers | 15 mph NE | 47% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 44% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph ENE | 32% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Tuesday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 27% |
| Wednesday | 65°F | Mostly Cloudy | 10 mph NE | 14% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NE | 2% |
| Thursday Night | 55°F | Mostly Cloudy | 0 to 10 mph NE | 7% |
| Friday | 72°F | Partly Sunny | 0 to 10 mph NE | 6% |
| Friday Night | 55°F | Partly Cloudy | 0 to 10 mph NE | 3% |
| Saturday | 74°F | Mostly Sunny | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Richton Park, IL
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
Explore more for Richton Park, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Park Forest, Il (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.