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Diamond Weather Forecast
| REST OF TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | | |  |  |  |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C |
| POP: 40% | POP: 60% | POP: 60% | POP: 20% | POP: 30% | POP: 50% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1030 AM EDT Tue Sep 15 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 648 AM EDT Tue Sep 15 2026
Key Messages
- Hot and humid conditions return Today and Wednesday with highs reaching the 90s
- Thunderstorm chances increase late Today through Wednesday night with localized heavy rainfall
- Shower and storm risks persist through late week along a slow- moving frontal boundary
Discussion
(Today through Monday)... Issued at 255 AM EDT Tue Sep 15 2026
Early This Morning through Today...
Much of today will be quiet with upper ridging still the main influence across central Indiana. Warm advection will brin...