Jewett, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jewett, a village in Cumberland County, Illinois.
Today
85°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 85. Southeast wind 1 to 5 mph.
7-day forecast for Jewett
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Patchy Fog then Sunny | 1 to 5 mph SE | 0% |
| Tonight | 64°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 87°F | Sunny | 1 to 5 mph S | 0% |
| Wednesday Night | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph S | 32% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 2 to 6 mph SSW | 60% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 3 mph SSW | 42% |
| Friday | 84°F | Chance Showers And Thunderstorms | 5 mph SSW | 27% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms | 3 mph SSW | 20% |
| Saturday | 85°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 20% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SSW | 17% |
| Sunday | 87°F | Sunny | 5 to 9 mph SSW | 8% |
| Sunday Night | 71°F | Mostly Clear | 8 mph SSW | 8% |
| Monday | 89°F | Mostly Sunny | 9 mph SSW | 10% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 7 mph SSW | 23% |
Forecast source: National Weather Service (api.weather.gov) for Jewett (39.208, -88.243). Updated through the day.
Growing snapshot for Jewett
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
More local growing data for Jewett: nearby ZIP 62436 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Newton, Il (13.8 mi from Jewett). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.