Newton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newton, a city in Jasper County, Illinois.
Tonight
70°F
Partly Cloudy
Partly cloudy, with a low around 70. Southeast wind around 6 mph.
7-day forecast for Newton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Partly Cloudy | 6 mph SE | 5% |
| Saturday | 94°F | Mostly Sunny | 5 to 9 mph SSW | 14% |
| Saturday Night | 72°F | Mostly Cloudy | 7 mph S | 9% |
| Sunday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph WNW | 23% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 9 mph NNE | 41% |
| Monday | 80°F | Rain Showers Likely | 12 mph NE | 59% |
| Monday Night | 59°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 9 to 14 mph NNE | 59% |
| Tuesday | 73°F | Chance Showers And Thunderstorms then Partly Sunny | 13 mph NNE | 39% |
| Tuesday Night | 55°F | Mostly Cloudy | 7 to 13 mph NNE | 8% |
| Wednesday | 73°F | Partly Sunny | 10 mph NNE | 4% |
| Wednesday Night | 55°F | Partly Cloudy | 3 to 10 mph NNE | 4% |
| Thursday | 75°F | Mostly Sunny | 6 to 9 mph NNE | 4% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 9 mph NNE | 4% |
| Friday | 76°F | Mostly Sunny | 6 to 9 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Newton (38.987, -88.164). Updated through the day.
Growing snapshot for Newton
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
More local growing data for Newton: nearby ZIP 62448 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Newton, Il (1.6 mi from Newton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.