Weather World
City of Rock Falls, ILRock Falls, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Rock Falls Weather Forecast
| THIS AFTERNOON | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  | | | | | | | | |
| Showers | Chance of Showers | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Clear | Clear | Mostly Clear | Mostly Clear | Mostly Sunny |
| Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C |
| POP: 100% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 126 PM CDT Thu Oct 01 2026 
Rock Falls Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Rock Falls Weather Map
Rock Falls Quick Facts
Rock Falls Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1257 PM CDT Thu Oct 1 2026
Key Messages
- Persistent showers will remain through much of Thursday, with the potential for heavier rainfall through the morning hours. We will start to see rainfall decrease from northwest- southeast through the afternoon and evening. A Flood Watch remains in effect.
- Pleasant early Fall weather this weekend into early next week, with dry conditions and seasonable temperatures.
Aviation
/18Z TAFS THROUGH 18Z FRIDAY/... Issued at 1254 PM CDT Thu Oct 1 2026
MVFR/IFR conditions to continue through the...