Weather WorldUnion Mills Lake, IN Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Union Mills Lake Weather Forecast
| REST OF TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  |  |  |  | | | | | |  | |
| Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Clear |
| Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C |
| POP: 50% | POP: 30% | POP: 30% | POP: 40% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 818 AM CDT Tue Aug 18 2026 
Union Mills Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Union Mills Lake Weather Map
Union Mills Lake Quick Facts
Union Mills Lake Forecast Discussion
Issued: 630 AM EDT Tue Aug 18 2026
Key Messages
- The next chance of rain arrives tonight and persists through Wednesday.
- Severe weather is not expected but a few strong storms may be possible in far NW IN/SW MI late this evening. Heavy rain is also not expected.
- After pleasant conditions Thursday and Friday, more light rain is expected on Saturday.
Discussion
... Issued at 115 AM EDT Tue Aug 18 2026
Overall a pleasant day today as high pressure and theta-e trough remain over Indiana. After a cool start, h...