Waterloo, SC Weather Forecast
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Waterloo Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Sunny | Mostly Clear | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear |
| Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C |
| POP: 40% | POP: 30% | POP: 50% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 639 AM EDT Fri Sep 04 2026 

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Issued: 213 PM EDT Fri Sep 4 2026
Key Messages
1. Hot and humid conditions persist through Saturday, with heat index ranging from the upper 90s to mid 100s outside of the mountains this afternoon and again Saturday afternoon. Cooler and less humid conditions return behind a cold front starting Sunday. 2. Severe thunderstorms will be possible across the area Saturday afternoon and evening ahead of a strong cold front. Drier conditions should return for much of next week.
Discussion
... Key message 1: Hot and humid conditions persist...
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