Weather World
Nelson Private, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Nelson Private Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | |  |  |  | | |  |  | | |
| Sunny | Clearing | Mostly Sunny | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Sunny |
| Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Hi: 75°FHi: 24°C Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Sat Sep 19 2026 
Nelson Private Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Nelson Private Weather Map
Nelson Private Quick Facts
Nelson Private Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1200 PM CDT Sat Sep 19 2026
Key Messages
- A Heat Advisory remains in effect this weekend, with high temperatures 15 to 20 degrees above normal in the middle 90s to near 100 degrees.
- The passage of a cold front will begin a cooling trend by Monday. Temperatures by Tuesday finally cool closer to or even a little below seasonal normals, where they hold through the end of the week.
- The cold front brings 40-70% chances of showers and storms late Sunday night through Tuesday, with the highest chances Monday into Monday night.