Weather World
Olson, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Olson Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  |  |  |  |  | | |  | |  |
| Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Clear | Sunny | Chance of Showers | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 70°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C |
| POP: 90% | POP: 70% | POP: 20% | POP: 30% | POP: 40% | POP: 30% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1221 AM CDT Wed Sep 09 2026 
Olson Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Olson Weather Map
Olson Quick Facts
Olson Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1229 AM CDT Wed Sep 9 2026
Key Messages
- Showers and a few storms will move across the area late tonight through Wednesday.
- Thursday and Friday look pleasant.
- The next opportunities for rain will arrive this weekend and continue into early next week.
Discussion
... Issued at 120 PM CDT Tue Sep 8 2026
Per a recent subjective surface analyses, a 1000 mb surface low pressure system is moving across southern Manitoba well to the north of a surface high pressure system parked along the Atlantic coast. A cold front extends southward...