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City of Hartsville, South CarolinaHartsville, SC Weather Forecast
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| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY |
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| Clear | Sunny | Clear | Sunny | Clear | Sunny | Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Sunny |
| Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 520 PM EDT Mon Oct 12 2026 
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Issued: 158 PM EDT Mon Oct 12 2026
Key Messages
- 1) Dry forecast dominates the work week, with temperatures soaring above seasonal norms.
- 2) Most significant cooldown of the season so far settles in this weekend.
Discussion
... KEY MESSAGE 1...Dry forecast dominates the work week, with temperatures soaring above seasonal norms.
Upper ridge in the Gulf will slowly push northward towards Texas and Louisiana, before moving eastward into the Deep South this week. Subsidence keeps the forecast dry. Even more noticeable is a mid-October hea...