Weather World
City of Sandwich, ILSandwich, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Sandwich Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  | | |  |  |  |  | | | |
| Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers | Clearing | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Clear | Sunny |
| Lo: 60°FLo: 16°C | Hi: 69°FHi: 21°C | Lo: 65°FLo: 18°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C |
| POP: 90% | POP: 100% | POP: 90% | POP: 100% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 121 AM CDT Wed Sep 30 2026 
Sandwich Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Sandwich Weather Map
Sandwich Quick Facts
Sandwich Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 125 AM CDT Wed Sep 30 2026
Key Messages
- Periods of rain, heavy at times, expected late tonight through early Friday morning. Significant rises on area rivers and streams may result.
Discussion
... Issued at 241 PM CDT Tue Sep 29 2026
Early this afternoon, GOES water vapor imagery shows an expansive plume of deep Gulf moisture (PWATs ~1.5"+) streaming northward from the Plains across the Upper Midwest and into Ontario. This broad latitudinal transport is driven by a strong south- southwesterly low-level mass response east of a...