Bismarck, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Bismarck, IL in one place.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South southeast wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Bismarck, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 12, 2026 5:20 AM CDT.
The active forecast window currently covers Aug 12 to Aug 18, 2026 for Bismarck, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 12 to Aug 18, 2026
- Latest sync
- Aug 12, 2026 5:20 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Bismarck
Saturday looks like the warmest upcoming period in Bismarck at 89 degrees F.
Monday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Wednesday at about 6 to 9 mph SW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 12, 2026 5:20 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KIND
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy fog and a chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Southwest wind 6 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Southeast wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 70. East northeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms before 1pm. Mostly cloudy, with a high near 86. Northeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. East wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 73.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Sunny, with a high near 89.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A slight chance of rain showers. Mostly sunny, with a high near 81.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 62.
Sunny, with a high near 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Aug 12
|
Chance Showers And Thunderstorms
|
69°F |
7 mph
SSE
|
|
Wednesday
Aug 12
|
Patchy Fog then Showers And Thunderstorms Likely
|
83°F |
6 to 9 mph
SW
|
|
Wednesday Night
Aug 12
|
Chance Showers And Thunderstorms
|
68°F |
5 mph
SSE
|
|
Thursday
Aug 13
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
82°F |
3 to 7 mph
SE
|
|
Thursday Night
Aug 13
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
70°F |
6 mph
ENE
|
|
Friday
Aug 14
|
Showers And Thunderstorms
|
86°F |
6 mph
NE
|
|
Friday Night
Aug 14
|
Partly Cloudy then Chance Showers And Thunderstorms
|
70°F |
7 mph
E
|
|
Saturday
Aug 15
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
89°F |
7 mph
SSE
|
|
Saturday Night
Aug 15
|
Partly Cloudy then Slight Chance Rain Showers
|
73°F |
7 mph
SSW
|
|
Sunday
Aug 16
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
89°F |
6 to 9 mph
W
|
|
Sunday Night
Aug 16
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
68°F |
3 to 8 mph
NNW
|
|
Monday
Aug 17
|
Slight Chance Rain Showers
|
81°F |
6 mph
NNE
|
|
Monday Night
Aug 17
|
Slight Chance Rain Showers then Partly Cloudy
|
62°F |
0 to 5 mph
NE
|
|
Tuesday
Aug 18
|
Sunny
|
80°F |
3 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Bismarck.