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Riley Lake, IN Weather Forecast
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Riley Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  |  | | | |  | |
| Chance of T-Storm | Patchy Fog | Partly Cloudy | Chance of T-Storm | Mostly Sunny | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Chance of Showers | Chance of T-Storm |
| Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C |
| POP: 40% | POP: 50% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 228 AM EDT Thu Aug 20 2026 
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Riley Lake Forecast Discussion
Issued: 1253 AM EDT Thu Aug 20 2026
Key Messages
- Flood Watch in effect through 8AM Thursday across the northern half of central IN with localized flash flooding possible
- Scattered to numerous showers and storms are expected this afternoon into tonight, isolated severe storms are possible
- Generally drier late this week through early next week, but there is a chance for showers and storms late Friday into Saturday
Discussion
(This evening through Wednesday)... Issued at 332 PM EDT Wed Aug 19 2026
As of this...