Smithfield, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smithfield, a village in Fulton County, Illinois.
This Afternoon
69°F
Light Rain
Rain and a chance of thunderstorms. Cloudy, with a high near 69. South southeast wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Smithfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Light Rain | 18 mph SSE | 90% |
| Tonight | 52°F | Light Rain Likely | 12 to 16 mph S | 72% |
| Wednesday | 58°F | Chance Rain Showers then Mostly Cloudy | 12 to 16 mph SW | 12% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph SW | 3% |
| Thursday | 58°F | Partly Sunny | 7 to 13 mph W | 12% |
| Thursday Night | 42°F | Mostly Cloudy then Chance Light Rain | 3 to 7 mph NW | 27% |
| Friday | 54°F | Mostly Cloudy | 9 mph N | 14% |
| Friday Night | 35°F | Mostly Cloudy | 0 to 5 mph N | 2% |
| Saturday | 53°F | Mostly Sunny | 2 mph WNW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 2 mph WNW | 1% |
| Sunday | 60°F | Sunny | 2 to 7 mph WNW | 10% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 3% |
| Monday | 64°F | Sunny | 2 to 8 mph SW | 1% |
| Monday Night | 40°F | Mostly Clear | 5 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Smithfield (40.474, -90.295). Updated through the day.
Growing snapshot for Smithfield
Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
185 days
Hardiness zone
6a
More local growing data for Smithfield: nearby ZIP 61477 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Astoria
Avon
Bryant
Canton
Cuba
Dunfermline
Ellisville
Fairview
Farmington
Goofy Ridge
Ipava
Lewistown
Liverpool
London Mills
Marietta
Norris
St. David
Table Grove
Vermont
Climate data from the nearest NOAA station, Prairie City 2S, Il (10.4 mi from Smithfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.