Bismarck, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bismarck, a village in Vermilion County, Illinois.
This Afternoon
79°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 79. East northeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Bismarck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Showers And Thunderstorms Likely | 8 mph ENE | 59% |
| Tonight | 66°F | Partly Cloudy | 7 mph ESE | 11% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 8 mph S | 41% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 39% |
| Sunday | 83°F | Showers And Thunderstorms Likely | 2 to 9 mph NNE | 56% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 12 mph NE | 62% |
| Monday | 70°F | Showers And Thunderstorms Likely | 14 mph ENE | 66% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 47% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 13 mph NE | 29% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 12 mph NNE | 16% |
| Wednesday | 69°F | Mostly Cloudy | 6 to 9 mph NNE | 5% |
| Wednesday Night | 54°F | Mostly Cloudy | 2 to 9 mph NNE | 5% |
| Thursday | 72°F | Partly Sunny | 3 to 7 mph NNE | 4% |
| Thursday Night | 55°F | Mostly Cloudy | 2 to 7 mph NNE | 4% |
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 Sep 18, 2026.