Bismarck, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bismarck, a village in Vermilion County, Illinois.
This Afternoon
76°F
Partly Sunny
Partly sunny, with a high near 76. South southeast wind around 14 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Bismarck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Partly Sunny | 14 mph SSE | 12% |
| Tonight | 59°F | Light Rain | 16 mph S | 79% |
| Wednesday | 66°F | Chance Light Rain then Mostly Cloudy | 10 to 14 mph SSW | 29% |
| Wednesday Night | 46°F | Mostly Cloudy | 8 mph SW | 1% |
| Thursday | 63°F | Mostly Sunny | 7 to 12 mph WSW | 4% |
| Thursday Night | 44°F | Mostly Cloudy | 1 to 5 mph WNW | 9% |
| Friday | 56°F | Slight Chance Light Rain then Partly Sunny | 2 to 8 mph NNW | 16% |
| Friday Night | 36°F | Mostly Cloudy | 2 to 7 mph NNW | 8% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 5% |
| Saturday Night | 33°F | Partly Cloudy | 1 mph WNW | 2% |
| Sunday | 60°F | Mostly Sunny | 1 to 7 mph W | 9% |
| Sunday Night | 33°F | Mostly Clear | 5 mph WNW | 10% |
| Monday | 63°F | Sunny | 2 to 8 mph WSW | 5% |
| Monday Night | 38°F | Mostly Clear | 5 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Bismarck (40.259, -87.611). Updated through the day.
Growing snapshot for Bismarck
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6a
More local growing data for Bismarck: nearby ZIP 61811 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Allerton
Alvan (Alvin)
Belgium
Catlin
Danville
East Lynn
Fairmount
Fithian
Georgetown
Henning
Hoopeston
Indianola
Muncie
Oakwood
Olivet
Potomac
Rankin
Ridge Farm
Rossville
Sidell
Tilton
Westville
Climate data from the nearest NOAA station, Danville, Il (10.9 mi from Bismarck). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.