Observed 7:25 PM EDT at KGSP

Duncan, SC weather

Clear and 54°12°.

Forecasts agree

Now 54°12°

Clear

Wind: 3 mph5 km/h; From the north. 35–10 mph16 km/h through 7 AM
Dew point: 46°8°; Comfortable
UV tomorrow: 5Moderate; Moderate 11 AM–5 PM · peak 5
Air quality: 34Good; Main pollutant: Ozone
Pressure: 30.42 inHg1030 hPa; Rising slowly · +0.02 inHg+0.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 43°6° tomorrow at 6 AM
Above 60°16° tomorrow by noon
High 69°21° tomorrow at 4 PM
Below 60°16° tomorrow night after 8 PM

TonightDown to 44°7° by 3 AM · Clear
Tomorrow morningUp to 59°15° by 11 AM · Clear
Tomorrow afternoonUp to 69°21° by 4 PM · Clear
Tomorrow nightDown to 47°8° by 4 AM · Clear
Monday morningUp to 61°16° by 11 AM · Clear
Monday afternoonUp to 72°22° by 4 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 7p	Clear	58°14° (likely 56°13° to 59°15°)	58°14°	0%	9 mph14 km/h from NE, gusts 10 mph16 km/h	66%	0%	0
Sat 8p	Clear	53°12° (likely 53°12° to 56°13°)	53°12°	0%	8 mph13 km/h from NE, gusts 10 mph16 km/h	78%	0%	0
Sat 9p	Clear	51°11° (likely 51°11° to 54°12°)	47°8°	0%	8 mph13 km/h from NE, gusts 11 mph18 km/h	87%	0%	0
Sat 10p	Clear	49°9° (likely 49°9° to 53°12°)	45°7°	0%	8 mph13 km/h from NNE, gusts 12 mph20 km/h	93%	0%	0
Sat 11p	Clear	48°9° (likely 48°9° to 52°11°)	44°7°	0%	8 mph13 km/h from NNE, gusts 12 mph19 km/h	99%	0%	0
Sun 12a	Clear	46°8° (likely 46°8° to 51°11°)	42°6°	0%	9 mph14 km/h from NNE, gusts 12 mph20 km/h	100%	11%	0
Sun 1a	Clear	46°8° (likely 46°8° to 51°11°)	41°5°	0%	9 mph14 km/h from NNE, gusts 12 mph19 km/h	100%	24%	0
Sun 2a	Mostly clear	45°7° (likely 45°7° to 52°11°)	40°4°	0%	9 mph14 km/h from NNE, gusts 15 mph24 km/h	100%	42%	0
Sun 3a	Mostly clear	44°7° (likely 44°7° to 53°12°)	39°4°	0%	9 mph14 km/h from NNE, gusts 17 mph27 km/h	100%	60%	0
Sun 4a	Mostly clear	44°7° (likely 44°7° to 53°12°)	38°3°	0%	10 mph16 km/h from NNE, gusts 15 mph25 km/h	100%	67%	0
Sun 5a	Partly cloudy	44°7° (likely 44°7° to 53°12°)	38°3°	0%	10 mph16 km/h from NNE, gusts 15 mph24 km/h	100%	55%	0
Sun 6a	Clear	43°6° (likely 43°6° to 51°11°)	38°3°	0%	10 mph16 km/h from NNE, gusts 13 mph20 km/h	100%	16%	0
Sun 7a	Clear	43°6° (likely 43°6° to 49°9°)	37°3°	0%	10 mph16 km/h from NNE, gusts 13 mph21 km/h	100%	9%	0
Sun 8a	Sunny	43°6° (likely 43°6° to 48°9°)	37°3°	0%	12 mph19 km/h from NNE, gusts 14 mph22 km/h	100%	1%	0
Sun 9a	Sunny	47°8° (likely 47°8° to 52°11°)	41°5°	0%	12 mph19 km/h from NNE, gusts 17 mph27 km/h	100%	2%	1
Sun 10a	Sunny	54°12° (likely 54°12° to 56°13°)	54°12°	0%	13 mph21 km/h from NNE, gusts 20 mph32 km/h	88%	2%	2
Sun 11a	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	14 mph23 km/h from NNE, gusts 21 mph34 km/h	75%	2%	3
Sun 12p	Sunny	62°17° (likely 61°16° to 63°17°)	62°17°	0%	14 mph23 km/h from NE, gusts 19 mph30 km/h	68%	5%	4
Sun 1p	Sunny	65°18° (likely 64°18° to 65°18°)	65°18°	0%	14 mph23 km/h from NE, gusts 20 mph32 km/h	64%	14%	5
Sun 2p	Sunny	67°19° (likely 65°18° to 67°19°)	67°19°	0%	13 mph21 km/h from NE, gusts 19 mph30 km/h	59%	15%	5
Sun 3p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	13 mph21 km/h from NE, gusts 18 mph28 km/h	57%	20%	5
Sun 4p	Mostly sunny	69°21° (likely 65°18° to 69°21°)	69°21°	0%	12 mph19 km/h from NE, gusts 17 mph27 km/h	56%	21%	4
Sun 5p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	12 mph19 km/h from NE, gusts 16 mph26 km/h	55%	18%	2
Sun 6p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	10 mph16 km/h from NE, gusts 16 mph26 km/h	59%	7%	1
Sun 7p	Clear	60°16° (likely 58°14° to 61°16°)	61°16°	0%	9 mph14 km/h from NE, gusts 11 mph18 km/h	73%	2%	0
Sun 8p	Clear	56°13° (likely 56°13° to 58°14°)	56°13°	0%	7 mph11 km/h from NNE, gusts 11 mph18 km/h	85%	0%	0
Sun 9p	Clear	54°12° (likely 54°12° to 57°14°)	54°12°	0%	8 mph13 km/h from NNE, gusts 12 mph19 km/h	92%	1%	0
Sun 10p	Clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	7 mph11 km/h from NNE, gusts 12 mph19 km/h	98%	1%	0
Sun 11p	Clear	51°11° (likely 51°11° to 54°12°)	48°9°	0%	7 mph11 km/h from NNE, gusts 11 mph18 km/h	100%	2%	0
Mon 12a	Clear	50°10° (likely 50°10° to 53°12°)	47°8°	0%	7 mph11 km/h from NNE, gusts 11 mph18 km/h	100%	4%	0
Mon 1a	Clear	49°9° (likely 49°9° to 52°11°)	47°8°	0%	7 mph11 km/h from NNE, gusts 11 mph18 km/h	100%	6%	0
Mon 2a	Clear	49°9° (likely 49°9° to 52°11°)	46°8°	0%	7 mph11 km/h from NNE, gusts 11 mph17 km/h	100%	3%	0
Mon 3a	Clear	48°9° (likely 48°9° to 51°11°)	45°7°	0%	7 mph11 km/h from NNE, gusts 11 mph18 km/h	100%	2%	0
Mon 4a	Clear	47°8° (likely 47°8° to 50°10°)	44°7°	0%	6 mph10 km/h from NNE, gusts 11 mph17 km/h	100%	1%	0
Mon 5a	Clear	47°8° (likely 47°8° to 50°10°)	44°7°	0%	6 mph10 km/h from NNE, gusts 11 mph17 km/h	99%	0%	0
Mon 6a	Clear	46°8° (likely 46°8° to 49°9°)	43°6°	0%	6 mph10 km/h from NNE, gusts 10 mph16 km/h	99%	1%	0
Mon 7a	Clear	46°8° (likely 45°7° to 47°8°)	43°6°	0%	6 mph10 km/h from NNE, gusts 10 mph16 km/h	100%	0%	0
Mon 8a	Sunny	45°7° (likely 45°7° to 47°8°)	42°6°	0%	5 mph8 km/h from NNE, gusts 9 mph15 km/h	100%	0%	0
Mon 9a	Sunny	49°9° (likely 48°9° to 51°11°)	46°8°	0%	6 mph10 km/h from NNE, gusts 10 mph16 km/h	97%	0%	0
Mon 10a	Sunny	55°13° (likely 55°13° to 56°13°)	55°13°	0%	6 mph10 km/h from NE, gusts 11 mph18 km/h	85%	2%	2
Mon 11a	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	7 mph11 km/h from NE, gusts 11 mph17 km/h	69%	2%	3
Mon 12p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	7 mph11 km/h from NE, gusts 10 mph16 km/h	60%	2%	4
Mon 1p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	6 mph10 km/h from NE, gusts 10 mph15 km/h	54%	4%	5
Mon 2p	Sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from NE, gusts 9 mph14 km/h	49%	0%	5
Mon 3p	Sunny	71°22° (likely 67°19° to 72°22°)	71°22°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	45%	0%	5
Mon 4p	Sunny	72°22° (likely 67°19° to 72°22°)	72°22°	0%	3 mph5 km/h from NE, gusts 7 mph11 km/h	43%	1%	4
Mon 5p	Sunny	71°22° (likely 67°19° to 71°22°)	71°22°	0%	3 mph5 km/h from NE, gusts 6 mph9 km/h	44%	6%	2
Mon 6p	Sunny	67°19° (likely 64°18° to 68°20°)	67°19°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	51%	11%	1

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 64°18°, low 43°6°. Typical 70°21° / 47°8°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
2. Overnight
  midnight–6 AM
  Mostly clear, 44°7°
  Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 43. Northeast wind around 10 mph, with gusts as high as 18 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–65°18°
Low, likely
43°6°–47°8°
Typical high / low
70°21° / 47°8°
Wind
11 mph18 km/h, gusts 24 mph38 km/h
UV peak
5
Tomorrow, Oct 25. Mostly sunny. High 69°21°, low 45°7°. Typical 70°21° / 47°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Official NWS forecast
Day: Sunny, with a high near 69. Northeast wind 10 to 14 mph, with gusts as high as 21 mph.
Night: Clear, with a low around 45. North northeast wind 6 to 10 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
65°18°–69°21°
Low, likely
45°7°–48°9°
Typical high / low
70°21° / 47°8°
Wind
13 mph21 km/h, gusts 25 mph40 km/h
UV peak
5
Monday, Oct 26. Sunny. High 72°22°, low 42°6°. Typical 70°21° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°8°
  Dry
Official NWS forecast
Day: Sunny, with a high near 72. Northeast wind 3 to 7 mph.
Night: Clear, with a low around 42. North northeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
42°6°–47°8°
Typical high / low
70°21° / 46°8°
Wind
8 mph12 km/h, gusts 15 mph24 km/h
UV peak
5
Tuesday, Oct 27. Sunny. High 75°24°, low 46°8°. Typical 69°21° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 75.
Night: Mostly clear, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–75°24°
Low, likely
42°6°–48°9°
Typical high / low
69°21° / 46°8°
Wind
6 mph10 km/h, gusts 14 mph23 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 71°22°, low 48°9°. Typical 69°21° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 71.
Night: Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–71°22°
Low, likely
46°8°–50°10°
Typical high / low
69°21° / 46°8°
Wind
10 mph16 km/h, gusts 22 mph35 km/h
UV peak
5
Thursday, Oct 29. Cloudy. High 73°23°, low 49°9°. Typical 69°21° / 45°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 73.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–73°23°
Low, likely
49°9°–56°13°
Typical high / low
69°21° / 45°7°
Wind
9 mph14 km/h, gusts 18 mph29 km/h
UV peak
5
Friday, Oct 30. Mostly sunny. High 78°26°, low 50°10°. Typical 68°20° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 78.
Night: Mostly clear, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–78°26°
Low, likely
50°10°–52°11°
Typical high / low
68°20° / 45°7°
Wind
8 mph13 km/h, gusts 15 mph25 km/h
UV peak
5
Saturday, Oct 31. Cloudy. High 77°25°, low 57°14°. Typical 68°20° / 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 58°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
70°21°–77°25°
Low, likely
53°12°–62°17°
Typical high / low
68°20° / 45°7°
Wind
8 mph13 km/h, gusts 20 mph31 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 74°23°, low 58°14°. Typical 68°20° / 44°7°. Rain 0.04 in1 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 59°15°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  30% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 68°20°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 62°17°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–77°25°
Low, likely
52°11°–64°18°
Typical high / low
68°20° / 44°7°
Wind
7 mph12 km/h, gusts 20 mph33 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 75°24°, low 59°15°. Typical 67°19° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 65°18°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 66°19°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–78°26°
Low, likely
58°14°–61°16°
Typical high / low
67°19° / 44°7°
Wind
17 mph27 km/h, gusts 30 mph49 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 64°, low 43°.
Tomorrow
Dry, high 69°, low 45°, warming up.
Monday
Dry, high 72°, low 42°, warming up.
Rest of week
Mostly dry, highs 71–78°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (GSP) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Middle Tyger River near Lyman

1.3 mi

Below flood stage

Level: 1.9 ft
Flow: 22 cfs

Reading from Sat 6:45 PM · NWS gauge page

Enoree River at Pelham

7.0 mi

Below flood stage

Level: 3.8 ft
Flow: 51 cfs

Reading from Sat 6:45 PM · NWS gauge page

Middle Tyger River near Gramling

8.5 mi

Level: 7.0 ft
Flow: 293 cfs

Reading from Sat 6:30 PM · NWS gauge page

Brushy Creek near Old Spartanburg Rd

9.6 mi

Below flood stage

Level: 1.5 ft
Flow: 7 cfs

Reading from Sat 6:15 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 58% less heating than a typical week.

This week 22Typical 52

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 15
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Sun, 12:00 PM–7:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

Grnvl Spart International Airport · official normals 1991–2020 · records 1884–2026

Oct 24, today vs a typical year

Today’s expected high is 6°3° colder than typical.

Last 7 days vs normal

On average 4°2° colder than normal (daily mean temperature).

−8°−5°SunOct 18
−7°−4°MonOct 19
−4°−2°TueOct 20
−1°WedOct 21
±0°ThuOct 22
−1°FriOct 23
—SatOct 24

Duncan weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 0 min; Losing 1 min 57 s a day; shortest Dec 21, 1 h 12 min less
Golden hour: 6:08–6:58 PM; Morning 7:26–8:17 AM
Blue hour: 6:58–7:08 PM; Morning 7:16–7:26 AM; first light 7:16 AM

Stars tonight? Fair

Mostly clear 7:43 PM–2 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:58 AM · rises 5:38 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Duncan. The highest point on the skyline is about 6,600 ft, 58 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Duncan, SC weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Middle Tyger River near Lyman

Enoree River at Pelham

Middle Tyger River near Gramling

Brushy Creek near Old Spartanburg Rd

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon