Jewett, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jewett, a village in Cumberland County, Illinois.
This Afternoon
94°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Sunny. High near 94, with temperatures falling to around 84 in the afternoon. Northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Jewett
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Chance Showers And Thunderstorms | 7 mph NE | 33% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph E | 23% |
| Saturday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 19% |
| Saturday Night | 70°F | Mostly Cloudy | 5 to 8 mph S | 13% |
| Sunday | 91°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph WNW | 24% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 9 mph NNE | 46% |
| Monday | 78°F | Rain Showers Likely | 13 mph NE | 60% |
| Monday Night | 57°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 9 to 14 mph NE | 59% |
| Tuesday | 72°F | Chance Showers And Thunderstorms then Partly Sunny | 13 mph NNE | 38% |
| Tuesday Night | 54°F | Mostly Cloudy | 6 to 13 mph NNE | 7% |
| Wednesday | 73°F | Partly Sunny | 10 mph NNE | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 3 to 9 mph NNE | 3% |
| Thursday | 74°F | Mostly Sunny | 5 to 9 mph NNE | 3% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 8 mph NNE | 3% |
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 Sep 19, 2026.