Williamsfield, IL Weather & Growing Conditions
Tonight
68°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3am and 5am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East southeast wind around 9 mph, with gusts as high as 18 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 |
|---|---|---|---|---|
| Tonight | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 9 mph ESE | 29% |
| Saturday | 84°F | Patchy Fog then Chance Showers And Thunderstorms | 8 mph S | 35% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph NE | 70% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 14 mph NE | 75% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 12 to 15 mph NE | 71% |
| Monday | 66°F | Showers And Thunderstorms Likely | 13 to 16 mph ENE | 67% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 16 mph NE | 43% |
| Tuesday | 64°F | Chance Rain Showers | 14 mph NE | 35% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 13 mph NNE | 4% |
| Wednesday | 68°F | Partly Sunny | 6 to 9 mph NNE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 7 mph NNE | 2% |
| Thursday | 69°F | Mostly Sunny | 2 to 6 mph NNE | 4% |
| Thursday Night | 54°F | Partly Cloudy | 1 to 5 mph NE | 5% |
| Friday | 72°F | Mostly Sunny | 2 to 7 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Williamsfield, IL
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
5b
Explore more for Williamsfield, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Knoxville, Il (13.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.