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Flat Lake, SC Weather Forecast

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Flat Lake, SC Weather Forecast

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Flat Lake SC weather - Clear - 69°F
Clear
69°F
Updated 10:38 pm
Feels Like 79°F
Humidity 100%
Wind N 0 mph
Barometer  29.96 in
Dew Point 69°F
Flat Lake SC weather - Clear - 21°C
Clear
21°C
Updated 10:38 pm
Feels Like 26°C
Humidity 100%
Wind N 0 km/h
Barometer  101.4 kPa
Dew Point 21°C
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Flat Lake Weather Forecast

TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY
Flat Lake, SC Weather - Tonight Partly Cloudy Flat Lake, SC Weather - Monday Mostly Sunny Flat Lake, SC Weather - Monday Night Chance Of Showers Flat Lake, SC Weather - Tuesday Chance Of T-Storm Flat Lake, SC Weather - Tuesday Night Chance Of T-Storm Flat Lake, SC Weather - Wednesday Chance Of Showers Flat Lake, SC Weather - Wednesday Night Chance Of T-Storm Flat Lake, SC Weather - Thursday Chance Of T-Storm Flat Lake, SC Weather - Thursday Night Chance Of T-Storm Flat Lake, SC Weather - Friday Mostly Sunny Flat Lake, SC Weather - Friday Night Mostly Clear Flat Lake, SC Weather - Saturday Mostly Clear
Partly Cloudy Mostly Sunny Chance of Showers Chance of T-Storm Chance of T-Storm Chance of Showers Chance of T-Storm Chance of T-Storm Chance of T-Storm Mostly Sunny Mostly Clear Mostly Clear
Lo: 69°FLo: 21°C Hi: 90°FHi: 32°C
 Lo: 71°FLo: 22°C Hi: 89°FHi: 32°C
 Lo: 69°FLo: 21°C Hi: 81°FHi: 27°C
 Lo: 65°FLo: 18°C Hi: 80°FHi: 27°C
Lo: 61°FLo: 16°C		 Hi: 80°FHi: 27°C
Lo: 61°FLo: 16°C		 Hi: 79°FHi: 26°C
 Hi: 79°FHi: 26°C
Lo: 59°FLo: 15°C		 Hi: 79°FHi: 26°C
Lo: 59°FLo: 15°C
POP: 20% POP: 60% POP: 50% POP: 50% POP: 50% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 540 PM EDT Sun Sep 20 2026 Flat Lake, SC Weather - WeatherWorld.com

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Flat Lake Forecast Discussion

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Issued: 733 PM EDT Sun Sep 20 2026

Key Messages

1) Unsettled weather Tuesday and Wednesday will give way to cooler weather.


Discussion

... KEY MESSAGE 1...Unsettled weather Tuesday and Wednesday will give way to cooler weather.

Previous forecast remains on track for this week with guidance showing good agreement on an upr- level trough diving into the Mid Atlantic during the mid week period, leading to elevated chances for rain (50-60% PoPs) Tuesday through Thursday following a dry Monday. Not expecting enough precip to put a dent in...