Jewett, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jewett, a village in Cumberland County, Illinois.
Today
67°F
Slight Chance Drizzle
A slight chance of drizzle. Mostly cloudy. High near 67, with temperatures falling to around 59 in the afternoon. West southwest wind 9 to 13 mph, with gusts as high as 23 mph.
7-day forecast for Jewett
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 67°F | Slight Chance Drizzle | 9 to 13 mph WSW | 10% |
| Tonight | 43°F | Slight Chance Drizzle then Mostly Cloudy | 9 mph WSW | 10% |
| Thursday | 63°F | Mostly Sunny | 8 to 13 mph WSW | 2% |
| Thursday Night | 44°F | Mostly Cloudy | 5 mph WNW | 1% |
| Friday | 56°F | Partly Sunny | 5 to 12 mph NNW | 3% |
| Friday Night | 35°F | Partly Cloudy | 3 to 8 mph NNW | 0% |
| Saturday | 54°F | Sunny | 6 mph NNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 59°F | Sunny | 2 to 8 mph WNW | 2% |
| Sunday Night | 33°F | Clear | 3 mph W | 0% |
| Monday | 63°F | Sunny | 1 to 7 mph SW | 0% |
| Monday Night | 38°F | Clear | 3 mph SW | 0% |
| Tuesday | 67°F | Sunny | 6 mph W | 1% |
| Tuesday Night | 38°F | Mostly Clear | 2 mph NNW | 1% |
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 Nov 4, 2026.