Jewett, IL Weather & Growing Conditions
This Afternoon
93°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny, with a high near 93. West southwest wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Slight Chance Showers And Thunderstorms | 7 mph WSW | 29% |
| Tonight | 70°F | Mostly Cloudy | 6 mph S | 13% |
| Sunday | 91°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 6 to 9 mph WNW | 17% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 8 to 13 mph NNE | 46% |
| Monday | 77°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 54% |
| Monday Night | 57°F | Chance Rain Showers | 8 to 12 mph NE | 39% |
| Tuesday | 72°F | Chance Rain Showers | 12 mph NE | 37% |
| Tuesday Night | 54°F | Mostly Cloudy | 6 to 12 mph NNE | 10% |
| Wednesday | 72°F | Partly Sunny | 10 mph N | 10% |
| Wednesday Night | 55°F | Partly Cloudy | 3 to 10 mph N | 1% |
| Thursday | 75°F | Partly Sunny | 8 mph N | 1% |
| Thursday Night | 56°F | Mostly Cloudy | 2 to 7 mph NNE | 3% |
| Friday | 77°F | Partly Sunny then Slight Chance Rain Showers | 5 to 8 mph NNE | 15% |
| Friday Night | 55°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 7 mph NE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jewett, IL
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
Explore more for Jewett, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Newton, Il (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.