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Second Basin Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  |  |  | |  | | | | |  | |
| Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Showers Likely | Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% | POP: 30% | POP: 60% | POP: 70% | POP: 70% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1213 PM EDT Sat Oct 31 2026 
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Issued: 1210 PM EDT Sat Oct 31 2026
Key Messages
- Light rain showers this morning gradually move out by the mid afternoon.
- Very warm on Tuesday followed by increasing rain chances through Wednesday (60% chance).
Discussion
... Issued at 337 AM EDT Sat Oct 31 2026
An area of showers is underway spanning from central IA through extreme western Indiana. Mesoanalysis shows warm air advection aloft along with subtle near-surface convergence, and even modest elevated instability (through central IL, fading well before the IN line). This WAA ...