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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 - 82°F
Clear
82°F
Updated 6:18 pm
Feels Like 90°F
Humidity 65%
Wind SE 3 mph
Barometer  29.93 in
Dew Point 69°F
Flat Lake SC weather - Clear - 28°C
Clear
28°C
Updated 6:18 pm
Feels Like 32°C
Humidity 65%
Wind SE 5 km/h
Barometer  101.4 kPa
Dew Point 21°C
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Flat Lake Weather Forecast

THIS AFTERNOON TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT
Flat Lake, SC Weather - This Afternoon Mostly Sunny Flat Lake, SC Weather - Tonight 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 T-Storm Flat Lake, SC Weather - Wednesday Night Chance Of Showers Flat Lake, SC Weather - Thursday Chance Of Showers Flat Lake, SC Weather - Thursday Night Partly Cloudy Flat Lake, SC Weather - Friday Mostly Clear Flat Lake, SC Weather - Friday Night Mostly Clear Flat Lake, SC Weather - Saturday Sunny Flat Lake, SC Weather - Saturday Night Mostly Clear
Mostly Sunny Chance of Showers Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Partly Cloudy Mostly Clear Mostly Clear Sunny Mostly Clear
Hi: 89°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: 79°FHi: 26°C
 Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
Lo: 55°FLo: 13°C		 Hi: 79°FHi: 26°C
Lo: 55°FLo: 13°C		 Hi: 79°FHi: 26°C
 Hi: 81°FHi: 27°C
Lo: 55°FLo: 13°C
POP: 20% POP: 50% POP: 50% POP: 50% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 221 PM EDT Mon Sep 21 2026 Flat Lake, SC Weather - WeatherWorld.com

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Flat Lake Forecast Discussion

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Issued: 238 PM EDT Mon Sep 21 2026

Key Messages

1) Unsettled weather Tuesday through Thursday will give way to cooler weather.


Discussion

... KEY MESSAGE 1...Unsettled weather Tuesday through Thursday 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. Not expecting enough precip to put a dent into the drought, bu...