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Town of Irmo, South CarolinaIrmo, SC Weather Forecast
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Irmo Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  | | | | | | | | |  |
| Partly Cloudy | Mostly Sunny | Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Chance of Showers |
| Lo: 65°FLo: 18°C | Hi: 90°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C |
| POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1208 AM EDT Wed Sep 16 2026 
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Issued: 822 PM EDT Tue Sep 15 2026
Key Messages
- 1. A backdoor front will usher in drier and slightly cooler air through the middle to end of this week.
- 2. Increasing moisture and rain chances by the end of the weekend into early next week.
Discussion
... KEY MESSAGE 1: A backdoor front will usher in drier and slightly cooler air through the middle to end of this week.
Confidence remains high in the pattern over the next several days. Extreme 500 hPa ridge remains settled over the southeastern US, with NAEFS and LREF 500 hPa heights a...