Great Falls, SC Weather Tomorrow

Before heading out, check tomorrow's Great Falls weather and the extended 5 day forecast featuring precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction across the Great Falls area and around Chester county, South Carolina.
Updated: Wed Sep 16th 2026 7:00 PM EDT
Great Falls, SC Weather – 9-16 – Sunny
89° / 67°
Sunny
In Great Falls, bright and sunny conditions with highs near 89°F and lows around 67°F. There's a very small chance of rainfall, only about 5%. Winds will be light at 8mph and gusts of 10.1mph at 11 PM. The humidity will be on the higher side, averaging about 62%, the maximum being 57% at 11 PM and 52% being its lowest at 9 PM. Barometric pressure is its highest of 30.29inHg at 11 PM, a lowest point of 30.26inHg at 8 PM with an avg 30.28inHg.
Great Falls, SC Weather – 9-17 – Sunny
93° / 67°

Weather Tomorrow

Sunny
Daytime highs will reach 93°F with lows dropping to 67°F in Great Falls, where bright and sunny conditions. There's a very small chance of rainfall, only about 3%. Winds will be light at 4mph and gusts of 14.1mph at 11 AM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 85% at 7 AM and 31% being its lowest at 4 PM. Barometric pressure is its highest of 30.29inHg at 12 AM, a lowest point of 30.13inHg at 5 PM with an avg 30.23inHg.
Great Falls, SC Weather – 9-18 – Scattered Showers
85° / 72°
Scattered Showers
Great Falls may see passing showers, with daytime highs of 85°F and overnight lows near 72°F. Rainfall predicted to have a 60% chance with an estimated 0.07in. Winds will be light at 6mph and gusts of 13mph at 10 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 96% at 11 PM and 56% being its lowest at 12 PM. Barometric pressure is its highest of 30.17inHg at 12 AM, a lowest point of 30.01inHg at 7 PM with an avg 30.09inHg.
Great Falls, SC Weather – 9-19 – Mist
87° / 71°
Mist
In Great Falls, mist is likely with a high near 87°F and a low around 71°F. The chance of rain is 83% with an estimated 0.59in. Winds will be light at 8mph and gusts of 16.6mph at 8 PM. High humidity with average of 85% is anticipated, the maximum being 98% at 7 AM and 54% being its lowest at 4 PM. Barometric pressure is its highest of 30.05inHg at 11 AM, a lowest point of 29.97inHg at 5 PM with an avg 30.02inHg.
Great Falls, SC Weather – 9-20 – Mist
84° / 71°
Mist
Great Falls may see mist, with daytime highs of 84°F and overnight lows near 71°F. Rainfall predicted to have a 63% chance with an estimated 0.08in. Winds will be light at 5mph and gusts of 15.4mph at 4 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 97% at 7 AM and 57% being its lowest at 3 PM. Barometric pressure is its highest of 30.05inHg at 11 AM, a lowest point of 29.92inHg at 5 PM with an avg 29.99inHg.
Great Falls, SC Weather – 9-21 – Overcast
93° / 73°
Overcast
Highs will reach 93°F with lows near 73°F in Great Falls, where cloud-filled skies are. Rainfall predicted to have a 66% chance with an estimated 0.07in. Winds will be light at 5mph and gusts of 12.8mph at 11 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 90% at 11 PM and 41% being its lowest at 2 PM. Barometric pressure is its highest of 30.01inHg at 11 AM, a lowest point of 29.94inHg at 5 PM with an avg 29.96inHg.

Currently

Sunny 83°F
30.24 inHg.
Barometer
51%
Humidity
SE 9.4 mph
Wind
Sunny

5 Day Forecast Nearby

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