Weather World
The Morton ArboretumMorton Arboretum, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Morton Arboretum Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  | | |  |  |  |  | | |  |
| Chance of Showers | Chance of T-Storm | Mostly Clear | Chance of Showers | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy |
| Hi: 65°FHi: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C |
| POP: 20% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 220 AM CDT Wed Aug 26 2026 
Morton Arboretum Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Morton Arboretum Weather Map
Morton Arboretum Quick Facts
Morton Arboretum Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 330 AM CDT Wed Aug 26 2026
Key Messages
- Isolated non-severe thunderstorms may persist into portions of northern Illinois through mid-morning, mainly north of I-88.
- Potential for strong to severe thunderstorms this afternoon into early evening along a cold front, with the greatest severe threat near and east of a Paxton, IL to Valparaiso, IN line.
Discussion
... Issued at 330 AM CDT Wed Aug 26 2026
While a narrow ribbon of warm advective showers/sprinkles managed to develop briefly in northern Illinois early this morning, insu...