Marion County, SC Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Marion County Weather Forecast
| THIS AFTERNOON | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
| Sunny | Patchy Fog | Patchy Fog | Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Chance of Showers | Chance of Showers | Showers | Showers |
| Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Hi: 90°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 90°FHi: 32°C Lo: 65°FLo: 18°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C Lo: 65°FLo: 18°C |
| POP: 50% | POP: 50% | POP: 70% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 235 PM EDT Tue Sep 29 2026 

Marion County Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Marion County Weather Map
Marion County Quick Facts
Marion County Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 233 PM EDT Tue Sep 29 2026
Key Messages
- 1) Another round of minor coastal flooding expected at this evening`s high tide for the lower Cape Fear River, including downtown Wilmington.
- 2) Warming trend continues through Saturday, allowing temperatures to soar above seasonal norms. Next earnest rain chances return by the weekend.
Discussion
... KEY MESSAGE 1...Another round of minor coastal flooding expected at this evening`s high tide for the lower Cape Fear River, including downtown Wilmington.
Positive tidal departures continu...
Weather World