Bismarck, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bismarck, a village in Vermilion County, Illinois.
Today
83°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 83. South wind around 3 mph.
7-day forecast for Bismarck
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog then Sunny | 3 mph S | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph SSE | 0% |
| Wednesday | 84°F | Mostly Sunny | 2 to 6 mph SSW | 2% |
| Wednesday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph S | 57% |
| Thursday | 82°F | Showers And Thunderstorms | 1 to 6 mph SSW | 77% |
| Thursday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 3 mph S | 55% |
| Friday | 83°F | Chance Showers And Thunderstorms | 2 mph SSW | 25% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 1 mph SSW | 25% |
| Saturday | 85°F | Mostly Sunny | 1 to 5 mph SSW | 14% |
| Saturday Night | 69°F | Mostly Clear | 2 to 6 mph SSW | 12% |
| Sunday | 86°F | Sunny | 6 to 10 mph SSW | 10% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 9 mph SSW | 15% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms | 9 mph SSW | 20% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 mph SW | 31% |
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 Aug 4, 2026.